Thursday, April 29, 2010

The Progression of Psychological Thought

Foreword

The purpose of this website is to provide a detailed look into the history and systems of the discipline of psychology. When studying the history of any discipline, the names and faces of influential figures throughout it's history is important. However, it is the thought and idea which these figures pushed forward which is of greatest importance. Thus the best way to study the history of any discipline, including psychology, is through a thorough mapping of the progression of thought, while using the influential people within the discipline's history as landmark or milestone along the map.
The undertaking of such study is vitally important. In order to fully understand and advance contemporary theory, it is necessary to have a concrete grasp on the progression of thought and theory throughout a disciplines history. For without such knowledge, knowledge of past advancements, redundant and still relevant theory, and past successes and failures, one is doomed to repeat past mistakes and progression of the discipline seems inevitably out of question.

Table of Contents

Concluding words

While this website is in no way comprehensive, it does achieve the goal of providing a somewhat detailed outline of the development of psychology thought. A more noble project would be to track the progression of the western psychological thought in the greater context of western thought as a whole, this however is far to arduous and ambitious of a project for a simple term project.
As we have seen the tradition of western psychology bares its roots the philosophical tradition tradition of ancient Greece. The most important contribution of the ancient Greek philosophers is that of materialism, empiricism, and atomism, as well as the preference for epistemic virtuousness in opposition to the blind following of dogmatic belief systems.
The western tradition from the ancient Greeks through until the late 18th century contributed much in the way of philosophical thought, particularly in the way of the scientific tradition. Disciplines aimed at the study of all imaginable phenomena began to emerge, from math, to physics, to chemistry, to biology, to physiology, and eventually to psychology. Continuing the scientific trend of associationism and quantification, early psychologist such as Wilhelm Wundtand Edward Titchner endeavored in what would become known as the structural approach to psychology.
This approach would later be challenged by a group of psychologists which would be identified as functionalist, including John Dewey and James Angell. These thinkers would reject the structuralist methodology right down to the basic questions which they asked. Where structuralists asked "what?", specifically what made up conscious experience. Functionalist would ask "why?"; what is the purpose behind such a function. Being heavily influenced by evolutionary theory, the common answer to this question was that the function of cognitive faculties is adaptive to survival.
A later group would criticize functionalist theories, stating that there is no directly observable evidence for the presence of the mind, thus it should be eliminated from psychological theory. This counterintuitive stance is that of the Behavioral school of psychology, which would be highly influential on both psychology and the general population as a whole. As a practical extension of evolutionary theory, behaviorism sought to explain the way in which learning occurs (as learning is the adaptational feature of conscious organism which allows for changing and challenging environments).
As with the these previous theories, a further group would emerge to criticize behavioral theory, due mainly to their denial of the psyche. This group of psychologist, known as Cognitive psychologist, explained organisms as complex data processing units, the operation of which could likely be described by way of algorithms. Learning in this perspective was viewed as part of maturation and was part of a biologically identifiable process.
Parallel to the emergence of the early structural and functional schools of psychology arose a drastically different perspective, Psychoanalysis, which denied much of the common roots which the previously mentioned schools of psychology had sprung. Psychoanalysis was a strongly associationistic and deterministic study, which held that the vast majority of a persons psychic development occurred as a child and that psychopathology was the result of disturbances during this developmental process. Psychoanalysis also stressed highly the vast impact which the unconscious has on our conscious mind. The claims of psychoanalysis are wide and varied, however, few are scientifically verifiable, a criticism which many from the empiricistic disciplines were avid.
As a reaction to the strongly reductionistic view which the previously mentioned thoeries have propagated, a group of psychologist began a movement known as Gestalt Psychology. These theorists operated on the premise that "the whole is greater than the sum of it's parts". The basic point being that it is pointless to attempt to disassemble mental constructs, they must be viewed as a whole to fully comprehend their use.
Finally, with a heavy influence from Festalt psychology, arose Humanistic Psychology. A discipline which placed emphasis on the person as a whole and as a member of a social context as a whole. This school was strongly opposed to both the reductionistic approach of structuralism, functionalism, and behaviorism, and the negative view of human nature which the forementioned theories and psychoanalysis propagated. Humanistic psychology to a very Aristotelean strategy in viewing all organism as having a potential and a actual drive toward that potential.
As mentioned earlier, this is not an exhaustive description of the discipline of psychology (of this it falls far short), however it does give a description of some of the major schools of psychology and the thought and influences which led to their creation.

References

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Tuesday, April 27, 2010

Aristotle


Aristotle is often referred to as the father of pre-scientific pscyhology. In his text De Amina, Aristotle defines his psychological theory, which he labels Holymorphism. In this theory, Aristotle claims, in contrast to Plato, that the mind and body are both merely facets of the same being; the mind being a function of the body just as the senses such as sight and touch are functions of the body. Aristotle posits the intellect as something similar to the modern conception of the soul, the intellect is our actuality and is the only part of us which is immortal and persists after death.

Aristotle's major contribution to the psychological tradition, however, is not in his psychological theory itself. Rather it is in his epistemic viewpoint; Aristotelean Empiricism (or just empiricism). The main premise of which being that knowledge is grounded not in authority, nor tradition (of which the Greeks were rich), nor in reason alone. Rather, Aristotle finds that knowledge is grounded in experience and observation. Experience is primary to all other sources of knowledge, and in conflicting cases, reason must be adapted so as to fit observed phenomena. This way of thinking is the bases for the scientific tradition of western culture.

The Following is a link to Aristoltle's writing, De Amina, which describes at great length his psychological theories in relation to his epistemic and metaphysical theories. Aristotle's epistemology is one of empiricism, he describes knowledge as being derived from observation. His Metaphysics describes all things as having potentiality and actuality, all things are in motion toward the prime mover, which is a state of pure actuality with no potentiality.

Plato


Born 428/427 BC in Athens, Greece and died in 348/347BC, Plato is perhaps the most influential thinker in western history. Plato is perhaps best known for his enduring epistemic view point now commonly referred to as Platonic Rationalism (or just Rationalism). The premise of which being that knowledge is derived from rational/reasonable/logical thought, and that such knowledge is acquired through conscious reflection. Plato is often associated with psychology due to his use of the word psyche, which is translated to both soul and mind as he ascribes both mental and spiritual aspects. Plato describes the psyche as the immortal part of our existence, which persists beyond the physical form, as well as this property Plato also describes the psyche a the host of our cognitive faculties such as memory, and reason. Due to this line of thinking, Plato is often referred to the pioneer of mind/body duality, a theme which is revisited on many occasions throughout the history of both philosophy and psychology, and thanks to the much later René Descartes, has had a profound effect on how much of western tradition views the human condition. Plato's theory on the relationship between the mind and body, along with his epistemic standpoint, and insistence of the importance of reason have inspired countless generations of philosophers, psychologists, and thinkers alike, his contribution to western thought is almost unrivaled. So much so that in 1979 the Philosopher Alfred Whitehead went as far as to say that "The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato". Plato's tradition was carried on through his most famous student, Aristotle, who whilst continuing to progress Greek thought (and by virtue, western thought), managed to challenge Plato's theories at just about every possible intersection.

Tuesday, April 13, 2010

Jean Piaget


Jean Piaget (1896-1980) is primarily considered a developmental psychologist, however he takes a cognitivist approach to this study. Piaget was particularly interested in the way in which we acquire knowledge throughout our development, and is renowned for the observation that knowledge acquisition is based on a biologically determined timetable. Furthermore, Piaget describes intellectual development as proceeding through a succession of identifiable stages, of which he described four:
  1. Sensorimotor Stage - from birth to about age two, children begin by experiencing their, and eventually mastering their, senses. Basic motor control is also acquired during this stage.
  2. Preoperational Stage - from about age two until about age seven, children acquire significant control of their sensory and motor functions.
  3. Concrete Operational Stage - occurs from about age seven to about age eleven, children begin to use logical thought and cognate about concrete events and objects.
  4. Formal Operational Stage - occurs from about age 11 onward, adolescents begin to use abstract reasoning, and display the ability to cognate events, objects, and concepts which have no concrete representation. This stage is not ever fully developed in some people, thus accounting for varying abilities of abstract reasoning.

Avram Chomsky


Avram Noam Chomsky (born 1928) is considered by many as the contemporary embodiment of at least one branch modern cognitive psychology. Chomsky's contribution to psychology lies in his theory of universal grammar. Chomsky postulates that there is an underlying set of grammatical rules common to all human language which is innate or native to human biology. As evidence for this, Chomsky points out the rapid language acquisition of children, and there surprisingly fast developing ability to form grammatically correct sentences with minimal experience of incorrect grammar, an argument known as the poverty of stimulus argument. This argument states that the natural acquisition of language by children us highly improbable given the relatively small data set available to children during the language acquisition stage of development. Chomsky's argument can be summarized in the following logical argument.
  1. There exists in all human languages, patterns which are to complex for children to learn using only the positive data which they are presented with.
  2. For the most part, children are presented only with positive data for these complex patterns. ie. they are only subject to people speaking with correct grammar.
  3. Thus, children do learn the complex set of grammatical rules present in human languages. An alternate hypothesis must be formed, such as the existence of an innate set of grammatical rules which is common to all languages.
Chomsky's view supports the presence of complex innate features and abilities of the psyche, and as such has had a dramatic effect on the way in which psychologist view learning.

The following is a link to the work of Chomsky titled Linguistic Contributions to the Study of Mind. The text details Chomsky's linguistic theory and the way in which in relates to learning theory as well as other aspects of psychology.

Cognitive Psychology

Arising in the mid 20th century, cognitive psychology represents a strongly positivist view point; referring to cognitive psychology's stance that knowledge is grounded sensory experience and positive empirical verification. Cognitive Psychology continues the trend of structuralism, functionalism, and behaviorism, as an embodiment the 8 roots of psychology, particularly in its insistence on critical empiricism and atomism, but also in the other 6 roots.

Cognitive psychology is seen as an extension of behaviorism, where behaviorism denied the existence of complex cognitive states, cognitive psychology accepts their existence, while maintaining the empiricist approach. Cognitive psychologist view organism as complex information processing units, who's cognitive functioning may be explainable in similar terms to the algorithmic logic used in modern computers. Cognitive psychologists best define cognitive processes in computational terms such that sensory data is "transformed, reduced, elaborated, stored, recovered, and used"(Neisser 2000).

Cognitive Psychology is has bee propagated largely by the work of three men: Jean Piaget, Ulric Neisser, and Avram Chomsky.

Abraham Maslow


Abraham Maslow (1908-1970) is most well known for his hierarchy of human needs, which is the culmination of of his Humanistic theory of Psychology. Maslow's hierarchy of human needs contained six levels, of which the lower needed to be satisfied before one could satisfy the next. These needs are as follows(from most basic to least basic):
  1. The lowest level of needs on the hierarchy is physiological needs; those basic needs we must fulfill in order to survive and maintain basic quality of life. These include needs such as food, water, oxygen, sex, sleep, etc.
  2. The second level of needs is referred to as Safety; this refers to the need for security and stability in ones life. Includes such needs as stable health, secure employment, stable resources, morality, sense of physical safety, etc.
  3. The third level of needs is a sense of Loving and Belonging; this is the need for relationships with other people. Particularly family relationships, friendly relationships, and intimate relationships.
  4. The fourth level of needs is a sense Esteem; this refers to the need for self-esteem, respect of and for others, confidence, and achievement.
  5. The fifth and highest level of needs in Maslow's hierarchy is the need for Self-Actualization; this is the need for creativity, morality, coherent/consistent worldviews, and importantly purpose, etc.
Beyond his hierarchy of human needs, Maslow also posited a final possible state. Once having achieved actualization, Maslow predicted that some may enter a state of transcendence or peak experience, were no further progress is possible. Not only are these individuals aware of their own actualization, they are also aware of the fullest potential of humanity as a whole. Goals of individual progress cease, as no further individual progress is possible, and a shift of needs from the individual to the needs of humanity occurs. Those in this transcendent state desire to see the actualization of humanity as a whole. While in this state of transcendence, one feels a sense of great happiness and unity with reality. A sense of ultimate truth and purpose is accomplished.

Maslows hierarchy of human needs bares a striking resemblance to Taoism and Zen-Buddhism. We all three seek to undergo a process of self betterment, eventually riding one's self of the pressures of society.

The following link is to the work of Maslow titled A Theory of Human Motivation. This article explains the intricacies of Maslow's hierarchy of human needs.

Carl Rogers


Carl Ransom Rogers(1902-1987) is considered among the founders of humanistic psychology. Rogers' approach, commonly known as the Person Centered Therapy, is based on the belief that his model is applicable to all human interaction, not just the interaction of client and therapist. Rogers described humans as having a natural strive to achieve the full of their potential, and mental health as part of this development towards the achievement of potential. Mental disturbance and psychopathology, according to Rogers, is the distortion of this process toward potential. As with Maslow, Rogers' view is very Aristotelean. Mimicking Aristotle's description of potentiality and actuality, Rogers states that living being has a potential, and an actualizing tendency which serves as motivation to reach that potential. Rogers viewed the fully functioning person as exhibiting five qualities:
  1. Openness to Experience - refers to one's ability to be accurately aware of one's own feelings and experience, and the ability to accept these feelings and experiences as reality.
  2. Existential Living - refers to a focus on living in the present, as opposed to the past or the future. Existential living is a realization that the past cannot be changes and the future is undetermined, the only thing we can control is our actions in the present.
  3. Organismic Trusting - refers to a trusting of ones own faculties. According to evolutionary theory, it is these faculties which have provided for our ancestors and allowed for our very existence, thus they must be intrinsically good (at least from a survival standpoint) and should be trusted.
  4. Experiential Freedom - refers to the acknowledgement of the fact that while we cannot free choose any action, we are capable of choosing from a ranging of actions to take, and the free acceptance of this choice is intrinsic to a fully functioning person.
  5. Creativity - refers to the desire to make a contribution to the world, particularly in the context of the society in which one lives.
Person Centered Therapy (PCT) aims to bring a person with psychological dysfunction closer to their fully functioning, real, and healthy self, as opposed to the current way of functioning, which has arisen due to conflict between their ideal self and the ideal self which society demands. PCT aims emphasizes harmonious relationships, which are based on mutual respect, congruence, and empathy (mirroring the way in which healthy relationships work outside of the counseling setting). Counselor are deliberately non-judgmental and non-threatening to clients.

Humanistic Psychology

Humanistic psychology, which arose in the mid 20th century, was a conscious reaction to and rejection of reductionistic and deterministic psychological theories such as behaviorism and psychoanalysis. Born largely of the existential philosophical tradition, Humanistic psychology is a conscious focus of the intrinsically good nature of humanity, as opposed to the negative picture of human nature which was characteristically painted by the former disciplines. Humanistic psychology understands humans, and possibly other organisms, as unique conscious beings, with free-will and some form of responsibility for their own actions. The internal motivation of humans, according to humanistic theory, is the desire to grow to the fullest of their potential.

Abraham Maslow is viewed as chief artisans of the humanistic movement, along with his contemporary Carl Rogers.

BF Skinner


BF Skinner (1904-1990) was highly influenced by the work of Pavlov and Watson. Concurring with Watson's behavioristic conclusions about the nature of learning, Skinner would attempt to expand upon and more fully explain the phenomena of conditioning. Where Watson limited himself to the pairing of stimulus and response, or conditioning of reflex arcs, Skinner found that learning could occur, at least in humans, in a more complex manor. Skinner recognized that conditioning could occur separate of the stimulus-response loop, in what her termed as operant conditioning.

Operant conditioning, in essence, works in the opposite direction of classical conditioning; where, in classical conditioning both the conditioned and unconditioned stimulus precedes the response, in operant conditioning stimulus is secondary to action. ie. the desired action must occur prior to the stimulus situation. Operant conditioning relies on the motivation of an organism to perform or not perform a particular action, and attempts to control this motivation through the application of either reenforcement, which increases the likely hood of a behavior, or punishment, which decreases the likelyhood of a behavior. Which can in both cases be either positive, the addition of a a stimulus or situation, or negative, the removal of a situation. As such there are four possible types of reenforcement or punishment:
  1. Positive Reenforcement - Is the the addition of a pleasant stimulus in response to a desired behavior. It serves to increase the probability of a desired behavior recurring.
  2. Negative Reenforcement - Is the removal of an already present unpleasant stimulus in response to a desired behavior. It serves to increase the probability of a desired behavior recurring.
  3. Positive Punishment - Is the addition of unpleasant stimulus in response to an undesired behavior. It serves to decrease the probability of an undesired behavior recurring.
  4. Negative Punishment - Is the removal of an already present pleasant behavior in response to an undesired behavior. It serves to decrease the probability of an undesired behavior recurring.
Skinner found that by employing this brand of conditioning he was able to condition any simple behavior he desired, and though a process he called shaping he found he was able to condition even the most complex behaviors. Skinner experimented mainly on pidgins, and was able to condition pidgins to perform any number of feats, such as turning in circles or tapping specific sequences or combinations of colored squares. In order to conduct such experiments, Skinner invented a device which he called the Operant Conditioning Chamber (colloquially called the Skinner Box). This was an enclosed chamber with a variety of different apparatus through which to deliver stimulus, along with a food dispenser, to positive administer reenforcement, and an electric grid covering the floor, at administer positive (or in some cases negative) punishment. Skinner also identified that different schedules of reenforcement and punishment resulted in differing success rates. It has often been highlighted that devices such as video-games and slot-machines utilize similar schedules of reenforcement and behavior to illicit repetitive behavior.

While Skinner believed that the combination of classical and operant conditioning could explain all behavior, his contemporary Albert Bandura, identified a third way in which learning occurs. What he identified as observational learning, the basic idea of which is that in many situations learning occurs vicariously through the observation of the behaviors of others. Bandura's bobo doll experiment is widely cited as an example of vicarious learning. In this study children observed a video of an adult playing with a "bobo" doll (an inflatable clown doll). One group of children were shown a video of the adult playing violently with the doll, while the other were shown a video of the adult having minimal interaction with the doll. The children which were shown the violent video were much more likely to play in a violent manor toward the bobo doll than were the children shown the non-violent video.

According to behaviorist theory, the combination of classical conditioning, operant conditioning, and observational learning can account for all learning.

John Watson


Watson (1878-1958) was heavily influenced by his Russian contemporary Ivan Pavlov, who while adhering to the principles of behaviorism in his research, never labeled himself as a behaviorist. Pavlov pioneered the idea of classical conditioning, in which a an unconditioned stimulus is paired with a neutral stimulus repeatedly, until such time as the the presentation of the unconditioned stimulus alone will illicit the same response as the conditioned stimulus alone. Classical conditioning was seen as a way of observing learning directly, without the need to contemplate the psyche; the fact that consistent changes in behavior could be observed was evidence enough that learning had occurred. Pavlov was able to illicit the salivation reaction in dogs to the sound of a bell chime through the pairing of the sound with the presentation of food. After substantial pairing all that was needed to illicit a salivation response in the dogs was the sound of the bell.

Watson was highly impressed with the findings of Pavlov, and is well known now for controversially performing similar experiments on human infants. His famous little Albert experiment is one such controversial study. In a similar fashion to Pavlov, Watson was able to condition a fear response in the child to a previously neutral stimulus of a white rabbit. The presentation of the rabbit was pair with an unconditioned frightening stimulus of a loud gong sound, and after very few pairings, Watson could illicit a fear response to with by presenting the white rabbit alone. Thus showing that the infant had learned a fear response.

Watson adhered strictly to the doctrine of scientific materialism, and went as far as to say that all cognitive activity could be classified as glandular, muscular, or chemical. He defined thought at "subvocal" activity, and insisted that thought was induced by minute movements of the larynx and vocal cords. Conditioned reflex, according to Watson, is the primary unit of psychological study, and reflexes (conditioned or not) can be classified into three categories: emotion, instinct, and habit. Watson concluded that his systematic approach of conditioning could be equally applied to all areas of psychology and served as a better explanation for all behavior than previous and contemporary competing theories.

BF Skinner, who served to continue the behaviorist trend, would likely equally endorse such claims, however, his view of conditioning was somewhat more complex than Watson's simple pairing of stimulus and response.


The following link is to a work by John Watson called Conditioned Emotional Reactions. It serves to describe the famous Little Albert experiment.

Behaviorism

Behaviorism arose in the late 19th and early 20th century as a reaction to the earlier schools of psychology, such as structuralism, functionalism, and psychoanalysis. It's chief quarrel with these schools was in the lack of observability of which the mind offered. There is, and was in fact, no way to directly observe the mind, and as such, the behavioral school of psychology did something radical and completely counterintuitive to psychology; they did away with the mind completely. The premise being something that is unobservable is as good as not existing. Rather than focusing on the mind, behaviorists found that behavior, as the name behaviorism suggests, or more specifically, directly observable phenomena, should be the focus of psychology.

Behaviorism, being heavily influenced by Darwinian theory, was very concerned with learning. As learning is the method by which conscious organisms are able to quickly adapt to challenging environments. Similar to structuralism, behaviorism can be seen as the embodiment of the 8 roots of psychology, and by many accounts behaviorism is this more so. In particular, behaviorism took heavy influence from the concept of critical empiricism, in their insistence on the direct observability of phenomena, and scientific materialism, in their stating that for all practical purposes the mind does not exist or at least is simply a byproduct of the physical body.

John Watson is considered the champion of behavioral psychology, his theory and research inspired countless others along similar paths, including the later BF Skinner who continued and expanded upon the groundwork which Watson put forth.

Wolfgang Köhler


Wolfgang Köhler, was one of the three founders of Gestalt Psychology, along with Max Wertheimer and Kurt Koffka. During the time of the first world war, Köhler was appointed a position as the director of an Anthropoid station on the Canary islands. This odd twist of fate served as a useful location of Köhler to conduct experiments regarding problem solving, using the chimpanzees from the base as experimental subjects. Köhler concluded, similarly to Thorndike, that animal learning can occur through trial and error; in order to reach fruit hung out of reach at the top of a cage, the chimps would try standing on a box. When this proved insufficient, they would stack two boxes. When this too proved insufficient, they would stack three, or use a stick, and so on and so forth, until by trial and error they had reached their goal. When presented with the same task a second time, the would arrive at the solution in a shorter time frame and with much fewer trials. Contrary to Thorndike however, Köhler concluded that the chimps were also capable of learning by insight, or the "ah-ha" moment. This was observed when a chimp was given a stick to short to reach the fruit hanging from the top of the cage. After try and failing for some time, the chimp would appear to give up. Then sporadically the chimp would realize that the short stick could be used to reach a longer stick outside of the cage and quickly move to retrieving the fruit. Gestalt theory was later applied as conclusions to the phenomena observed in this research. Problem solving was viewed as an attempt to clarify and/or unify parts of the whole which caused problems in the perception of the whole; a situation in which one has trouble perceiving a whole is seen as a problem, the solution is that which brings about our ability to perceive said whole.

Kurt Koffka


Kurt Koffka (1886-1941) is considered as one of the founders of Gestalt Psychology, along with Wertheimer and Kohler. Koffka is most duly noted for his application of Gestalt theory to the psychology of learning, in particular his hypothesis on the way in which learning occurs for infants. Koffka hypothesized that from birth infants perceive reality as a whole, and as they mature infants gradually gain the ability to distinguish between objects. So, as opposed to the learning process of an infant being the gradual introduction of new elements into a perceptual framework (as would be posited by other learning theories), gestalt learning theory views the learning process as a gradual process of distinguishing between different elements of an already apparent whole.

Koffka's early work was based mostly in perception, as was the vast majority of early gestalt psychological study, particularly in the perception of equals. The assumption at the time was that two equal phenomena would be perceived as equal, for instance two equal length straight lines would be perceived as the same length. However using tools such as the Muller-Lyer illusion Koffka was able to demonstrate that this simply was not the case.



Koffka's application of gestalt theory to fields outside of the study of perception, namely to learning/developmental psychology, served to prove that gestalt theory was fair more versatile than simply a descriptive perceptorary science. This opened the door for gestalt theory to be applied to any number of different psychological, philosophical, sociological, and scientific fields.

Max Wertheimer


Max Wertheimer (1880-1943) is credited with the discovery that perception does not always correspond to a on-to-one relationship with stimulus, realizing that "discontinuous, static visual stimulation can yield the perception of continuous movement"(Wertheimer, 2000). In discovering this, Wetheimer determined that the perceptual whole is prior to the parts of which it is made.

This video provides a good example of how static images presented in rapid succession are perceived as one continuous whole.

Wertheimer also applied the Gestalt approach to problem solving, stating that a problems occur when aspects of a problem do not fit together, there are gaps in aspects of a problem, or there is a lack of clarity. The solution to the problem is that which makes the pieces fit together, fills the gaps, or instills clarity thus making a unified whole which makes sense.


The following link is to a text by Wertheimer called Laws of Organization in Perceptual Forms. The text illustrates the gestalt laws of perception.

Gestalt Psychology

Gestalt Psychology is the result of a combined effort between Max Wertheimer, Kurt Koffka, and Wolfgang Köhler. It comes as a reaction to the structural and functional trends which were prevalent in the late 19th and early 20th century. Gestalt Psychology is an outright rejection of the strongly atomistic and associative trends of which early psychology was fond. The basic premise of gestalt psychology is often described by use of the age old saying that "the whole is greater than the sum of it's parts" (originally stated by Aristotle). While this serves as a good starting point, it does not quite capture the full concept of Gestalt psychology. On this matter, Kurt Koffka stated that "the whole is more than the sum of its parts. It is more correct to say that the whole is something else than the sum of its parts, because summing up is a meaningless procedure, whereas the whole-part relationship is meaningful."(Koffka, 1935)

In its early days, Gestalt psychology dealt mostly with perception. By all previous accounts, perception stood in a one-to-one relationship with physical phenomena. This assumption, however, proved somewhat problematic, as was first highlighted in 1912 when Wertheimer discovered what he labeled the phi phenomena; there is a threshold at which a series of rapidly presented individual pictures will sees to be perceived individuals, instead being perceived as a moving image. This is the principle by which motion pictures operate. By displaying continuous images in rapid successive order (at least around 17 fames per second), rather than perceiving individual images, one perceives motion of one continuous image. This inexplicable phenomena was one of many which were discovered over the coming years, the only explanation of which, according to the Gestalt theorists, was that the perceptual process must be viewed as a gestalt (The word gestalt translates poorly into English, but is loosely translated as whole).

The basic principle behind gestalt psychology is the law of Pragnanz, which states that our perception tends to be ordered in such a manor that it is regular, orderly, symmetric, and simple. Prgnanz can be broken down into 6 common laws:
  1. Law of Closure - The mind is predisposed to perceive elements which are not experienced through sensation, so as to increase the regularity of a figure. In simple terms, the mind tends to fill in the blanks.
  2. Law of Proximity - The mind tends to perceive elements which are spaced close together (either temporally or spatially) as part of a group or whole.
  3. Law of Similarity - The mind tends to group individual elements into collections or wholes based on common characteristics such as size, shape, color, brightness, etc.
  4. Law of Symmetry - The mind tends to perceive symmetrical images as a collective, despite spatial or temporal distance or interruption.
  5. Law of Continuity - The mind tends to continue patterns in visual, auditory, and kinetic stimulus.
  6. Law of Common Fate - The mind tends to group elements which are moving in a particular direction or at a particular speed as.
The chief method of study for Gestalt psychologists was phenomenology, a method which employs the purely descriptive documentation of experienced phenomena, with little to no limitation or boundaries as to what can be described.

Since it's founding, Gestalt principles have been almost all other areas of human experience, including: learning, problem solving, thinking, motivation, social psychology, ethics, aesthetics, and personality.

(Kurt Koffka, 1935: New York: Harcourt-Brace. p 176)

Alfred Adler


Alfred Adler(1870-1937) was a key figure in the psychoanalytic tradition. Although he was a contemporary of Freud, their ideas differed to a great degree. Adler deceptively labelled his version of psychoanalysis as individual psychology. Counter to intuition, this brand of psychology views the person in context of the society in which they are a part. The word individual here have a meaning more closely resembling un-divided or unified. In this way Adler's psychology takes a somewhat Gestalt or wholistic approach to psychology. Where Freud divided the psyche into three (the id, the ego, and the super ego), Adler felt it was much more important to see people as unified wholes.

Adler was an outspoken critic of Freud, and, as with Jung, he found that Freud placed far to much emphasis on the sexual nature of the mind and development. Adler reduced sex to merely a display of superiority. Adler did not think of superiority in the common interpretation of the word, rather an attempt to reach superiority was the overriding motivation for behavior. The desire for superiority in this sense refers to the desire for self-realization, completeness, and perfection, as opposed to a competitive view of superiority. Frustrations may occur when one is appeared to by feelings of inferiority such as inadequacy, incompleteness, or gross imperfection. These feelings may have a variety of sources, such as social status, physical defects, and level of parental care. Excessive frustration with or overcompensation for any of feelings of inferiority are, according to Adler, some of the major roots to psychopathology.

Adler was the first to describe the way in which birth order may effect the development of an individuals personality. He described the only child as most likely to be pampered and as such have a craving for adult attention and difficulty sharing. The First child, while being the center of attention for the first part of life, suddenly is faced with a loss of attention and as such may take to different strategies such as acting out as a means of regaining lost attention. Second and subsequent children will perceive the previous born as a sort of "pace setter" and show a tendency to highly competitive. The youngest child is likely to be the most pampered in a family, however they are likely to experience feelings of inferiority with the entirety of the household being bigger, faster, stronger, and better at everything. Often youngest siblings are highly motivated to become better than the other siblings.

Adler also pioneered such ideas as the Inferiority Complex and the Napoleon Complex.

Carl Jung

Carl Gustav Jung (1875-1961) was a Swiss born psychiatrist and contemporary of Sigmund Freud. After quite some time of collective study and correspondence with Freud, the pair had a falling out which had a dramatic effect on both Jung's personal life and his later theory. Jung's psychological theory, which he labeled Analytic Psychology, while maintaining the basic premises of psychoanalysis, was a stark contrast to Freudian theory.

While Jung agreed with Freud on the important role of the unconscious on our conscious experience, he found that Freud placed far to much weight on the influence of our sexual desires. Jung described the unconscious as much more productive than Freud, claiming that it could provide much useful insight into the wants, needs, desires, troubles, and so forth of the individual in question. While realizing that the unconscious could not be directly accessed, Jung believed that the motives of the unconscious could be realized through secondary roots such as dream analysis, free-association, and through the humanities (for example in paintings, music, and literature).

A central idea of Jung's analytic psychology is that of archetypes, the idea bares a striking resemblance to the Platonic idea of Forms. In Jungian psychology, the individual seeks to reconcile himself with the archetype of a person, and the unconscious plays a vital role in this process. Jung identifies a section of the mind which he labels the collective unconscious, this can be best described as the totality of human experience, however this is not an aspect of our mind which is available to us directly. It is however available to us in the same way that the rest of our unconscious is available; through symbolic representation in mediums such dreams, mythology, and the arts. The primary concern of Jung's Analytical psychology was the study of how the collective unconscious influences personality. Understanding of the psyche in this way was undertaken through thorough exploration of the disciplines such as anthropology, astrology, mythology, and philosophy.

Jung identified two distinctive personality characteristics, and believed that all people could be placed into one of two categories:
  1. Introverts: are those whose focus is generally directed inward; a focus on ones thoughts and feelings. Typical characteristics of an introvert include shyness, contemplativeness, and reservedness. Introverts may have trouble adjusting to social situations. Introverts are often subject to such behavior as daydreaming, over-consideration, procrastination, and withdrawal from and aversion to stressful situations.
  2. Extroverts: are those whose focus is outward, to the external world and the people in it. Extroverts are characterized by outgoing behavior, social attentiveness, high activity, aggressiveness, and fast (sometimes rash) decision making
Jung stressed that both characteristics were present in all people, however, there was almost always an imbalance or tendency towards one set of characteristics than another. The two categories of people could be seen as opposites on a continuum with no exact midpoint, individuals fall somewhere on the continuum showing more or less orientation towards one set of tendencies. Jung also identified four functions of the mind: Thinking, Feeling, Sensation, and Intuition. He describes these four functions as the way in which we experience the world.

Sigmund Freud

Sigmund Freud(1856-1939), was an Austrian born neurologist who is known today as the father of Psychoanalysis. Due to the impact of Freudian theory, Sigmund Freud is consistently ranked as one of the most influential people in western history.

Freud saw the mind as being divided into three parts each of which comes about during the childhood development and operates on a different principle:
  1. The id, being the only part of the mind present at birth, unconsciously operates on the pleasure principle.Which states, that people intrinsically seek pleasure and avoid pain. Thus the unconscious drive of the id is to seek out pleasure while simultaneously avoiding pain.
  2. The ego comes about shortly after birth as a method of managing the needs of the id. The ego contains the conscious aspect of the mind and operates on the reality principle; the principle that instant gratification for ones needs is not always possible, and that in some cases instant gratification for ones needs is a less desirable outcome than other possible longterm outcomes.
  3. The superego arises later in childhood development and is consistent with the realization that one is not the center of reality and all attention and that other beings also have needs. The superego aims for perfection and stands in opposition to the id; where the id seeks personal gratification, the superego seeks socially acceptable behavior. The superego functions through a system of reward and punishment of the consciousness; in thoughts or behavior which the superego deems constructive toward perfection/social acceptability, the superego rewards the id with positive/pleasurable feelings, such as happiness and love. Contrary, thoughts and behaviors which are destructive to the superego's goals are punished with negative/painful feelings, such as guilt and remorse.
Freud describes much of abnormal psychology do be the result of an imbalance of, or in extreme cases absence of, one of the three divisions of the mind. Freud's psychoanalytic theory also includes a more detailed developmental theory, in which he describes human development through to adulthood. In his theory of Psychosexual Development, Freud describes humans as having an instinctive sexual apatite, which he labels the libido. Freud identifies 5 phases of development, each of which is characterized both by a differing erogenous zone through which the individual derives sexual pleasure and different life conflicts. These stages are:
  1. Oral Phase - Lasting from birth to around two years of age. The individual derives pleasure from the mouth; breast feeding is a primary source of pleasure, in addition, infants tend to identify new objects by placing them in and around their mouth. All actions during this phase are based on the pleasure principle, as the ego and superego are not yet fully developed. During this stage the ego is formed as the infant begins to realize a distinction between their own body and the external world, and begin to realize and manipulate the delay of gratification. This stage is characterized by the conflict between dependence and independence.
  2. Anal Phase - Lasts from roughly 15+ months to 3 years of age. During this stage the erogenous zones shift from the mouth to the lower digestive tract and anus. Across cultures, toilet training typically occurs during this period. Continued development of the ego occurs in the realization that the gratification of the need to release fecal excrement must often be delayed in the interest of the greater long term outcome of cleanliness and hygiene. This stage is characterized by a conflict of self control/obedience.
  3. Phallic Phase - From roughly 3 years through 5 years of age, the erogenous zones shift to the genitals. Not, however, in the adult sexual sense, but more in a self exploratory sense. This stage is characterized by curiosity, as such children of this age will often desire to be naked and participate in games like "doctor" as a way of exploring the physical characteristics of others. The conflict during this stage is between morality and sexuality. It is during this stage that development of the super ego flourishes, morality becomes an internal process as opposed to a process of reward seeking and punishment avoidance.
  4. Latency Phase - Lasts from roughly five years of age through until the start to puberty. This is a phase of relative inactivity, in which unresolved conflicts of the past can be resolved, and the cognitive habits are practiced. Gratification is derived from outside sources such as hobbies, sports, schooling, and friends.
  5. Genital Phase - Lasts from puberty onward. While gratification is again focused on the genitals, the ego is now fully developed so gratification can occur in a wide variety of ways including imaginative situations and symbolic relationships. Conflict arises in the desire to be, and be treated as, mature, and in the desire for adult sexuality and reproduction.
Freud describes the vast majority of abnormal psychology as having its roots in some unresolved conflict of within one of these 5 phases of development. Freud's theories were questionably some of the most influential of all psychological theory, and as a result there have been countless offshoots. Two of the most prominent offshoots are that of Carl Gustav Yung and Alfred Adler.

The following link is to the well cited writing of Sigmund Freud The Interpretation of Dreams. This text describes the way in which the subconscious may be indirectly accessed through the examination of dream content.