‏إظهار الرسائل ذات التسميات History and experiences of Psychology. إظهار كافة الرسائل
‏إظهار الرسائل ذات التسميات History and experiences of Psychology. إظهار كافة الرسائل

الثلاثاء، 27 يوليو 2010

Schools of Psychology







From the late 1800's until the 1930's, psychologists were divided about what they should study and how they should study it. Four major schools developed. These schools were 
(1) Structuralism, 
(2) Behaviourism, 
(3) Gestalt psychology, and 
(4) Psychoanalysis.

Structuralism grew out of the work of James, Wundt, and their associates. These psychologists believed the chief purpose of psychology was to describe, analyse, and explain conscious experience, particularly feelings and sensations. The structuralists attempted to give a scientific analysis of conscious experience by breaking it down into its specific components or structures. For example, they identified four basic skin sensations: warmth, cold, pain, and pressure. They analysed the sensation of wetness as the combined experience of cold and smoothness.

The structuralists primarily used a method of research called introspection. In this technique, subjects were trained to observe and report as accurately as they could their mental processes, feelings, and experiences.

Behaviourism was introduced in 1913 by John B. Watson, an American psychologist. Watson and his followers believed that observable behaviour, not inner experience, was the only reliable source of information. This concentration on observable events was a reaction against the structuralists' emphasis on introspection. The behaviourists also stressed the importance of the environment in shaping an individual's behaviour. They chiefly looked for connections between observable behaviour and stimuli from the environment.

The behaviourist movement was greatly influenced by the work of the Russian physiologist Ivan P. Pavlov. In a famous study, Pavlov rang a bell each time he gave a dog some food. The dog's mouth would water when the animal smelled the food. After Pavlov repeated the procedure many times, the dog's saliva began to flow whenever the animal heard the bell, even if no food appeared. This experiment demonstrated that a reflex--such as the flow of saliva--can become associated with a stimulus other than the one that first produced it--in this case, the sound of a bell instead of the smell of food. The learning process by which a response becomes associated with a new stimulus is called conditioning.

Watson and the other behaviourists realized that human behaviour could also be changed by conditioning. In fact, Watson believed he could produce almost any response by controlling an individual's environment.

During the mid-1900's, the American psychologist B. F. Skinner gained much attention for behaviourist ideas. In his book Walden Two (1948), Skinner describes how the principles of conditioning might be applied to create an ideal planned society.

Gestalt psychology, like behaviourism, developed as a reaction against structuralism. Gestalt psychologists believed that human beings and other animals perceive the external world as an organized pattern, not as individual sensations. For example, a film consists of thousands of individual still pictures, but we see what looks like smooth, continuous movement. The German word Gestalt means pattern, form, or shape. Unlike the behaviourists, the Gestaltists believed that behaviour should be studied as an organized pattern rather than as separate incidents of stimulus and response. The familiar saying "The whole is greater than the sum of its parts" expresses an important principle of the Gestalt movement.

Gestalt psychology was founded about 1912 by Max Wertheimer, a German psychologist. During the 1930's, Wertheimer and two colleagues took the Gestalt movement to the United States.

Psychoanalysis was founded during the late 1800's and early 1900's by the Austrian doctor Sigmund Freud. Psychoanalysis was based on the theory that behaviour is determined by powerful inner forces, most of which are buried in the unconscious mind. According to Freud and other psychoanalysts, from early childhood people repress (force out of conscious awareness) any desires or needs that are unacceptable to themselves or to society. The repressed feelings can cause personality disturbances, self-destructive behaviour, or even physical symptoms.

Freud developed several techniques to bring repressed feelings to the level of conscious awareness. In a method called free association, the patient relaxes and talks about anything that comes to mind while the therapist listens for clues to the person's inner feelings. Psychoanalysts also try to interpret dreams, which they regard as a reflection of unconscious drives and conflicts. The goal is to help the patient understand and accept repressed feelings and find ways to deal with them.
 
Modern psychology has incorporated many teachings of the earlier schools. For example, though many psychologists disagree with certain of Freud's ideas, most accept his concept that the unconscious plays a major role in shaping behaviour. Similarly, most psychologists agree with the behaviourists that environment influences behaviour and that they should study chiefly observable actions. However, many psychologists object to pure behaviourism. They believe that it pays too little attention to such processes as reasoning and personality development.  


Psychology today has continued to develop in several directions. A group of extreme behaviourists called the stimulus-response school believe all behaviour is a series of responses to different stimuli. According to these psychologists, the stimulus connected with any response can eventually be identified. As a result, stimulus-response psychologists regard behaviour as predictable and potentially controllable.

Another group of psychologists, who are known as the cognitive school, believe there is more to human nature than a series of stimulus-response connections. These psychologists concentrate on such mental processes as thinking, reasoning, and self-awareness. They investigate how a person gathers information about the world, processes the information, and plans responses.

A school called humanistic psychology developed as an alternative to behaviourism and psychoanalysis. Humanistic psychologists believe individuals are controlled by their own values and choices and not entirely by the environment, as behaviourists think, or by unconscious drives, as psychoanalysts believe. The goal of humanistic psychology is to help people function effectively and fulfil their own unique potential. The supporters of this approach include the American psychologists Abraham H. Maslow and Carl R. Rogers.

Many psychologists do not associate themselves with a particular school or theory. Instead, they select and use what seems best from a wide variety of sources. This approach is called eclecticism.


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الاثنين، 26 يوليو 2010

Sigmund Freud's Self-Analysis


  
Sigmund Freud


Freud's self-analysis started in the mid 1890's to reach its climaxes in 1895 and 1900. In certain authors' opinion, it was continued up to his death in 1939. Nevertheless, we have to set a clear boundary between the time of Freud's discovery of the Oedipus complex and other essential contents of psychoanalysis and routine self-analysis he performed to check his unconscious psychic life.
The first phase is full of unexpected aspects and inventiveness - the productive, creative stage. The second becomes an obligation derived from his profession as a psychoanalyst.
Freud's discoveries during his first stage of self-analysis are known to have been included in two of his main books: "The Interpretation of Dreams" and "The Psychopathology of Everyday Life".
"The Interpretation of Dreams" provides plenty of Freud's dreams in his own interpretation, among which the famous dream of Irma's injection, which he considers a key issue in understanding the mysteries of dream life. It opens Chapter II ("The Method Of Interpreting Dreams: An Analysis Of A Specimen Dream") and provides material for an analysis covering several pages ahead.
Just as Freud himself maintained, the analysis of the dream is not complete but it was here that Freud for the first time asserted that dreams are the disguised fulfilment of unconscious wishes.
The explanation of the dream is quite simple: it tries to hide Freud's lack of satisfaction with the treatment given to a patient of his, Irma, and throw the guilt of partial failure upon others, exonerate Freud of other professional errors.
Dream interpretation also provides a dream psychology and many other issues. The volume is extremely inventive and rich in information, and, in its author's view, it is his most important work.
"The Psychopathology of Everyday Life", offers Freud room to focus on the analysis of faulty and symptomatic actions, the important thing to emphasize here being that this volume represents Freud's transfer from the clinical to normal life - it proves neurotic features are present not only in sickness but also in health. The difference does not lie in quality but in quantity. Repression is greater with the sick and the free libido is sensibly diminished. Therefore, it is for the first time in the history of psychopathology that Freud overrules the difference between pathology and health. That makes it possible to apply psychoanalysis to so-called normal life


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Pavlov's Dogs



ivan pavlov discovered classical conditioning
 Ivan Pavlov 





The concept of classical conditioning is studied by every entry-level psychology student, so it may be surprising to learn that the man who first noted this phenomenon was not a psychology at all. Ivan Pavlov was a noted Russian physiologist who went on to win the 1904 Nobel Prize for his work studying digestive processes. It was while studying digestion in dogs that Pavlov noted an interesting occurrence – his canine subjects would begin to salivate whenever an assistant entered the room.
In his digestive research, Pavlov and his assistants would introduce a variety of edible and non-edible items and measure the saliva production that the items produced. Salivation, he noted, is a reflexive process. It occurs automatically in response to a specific stimulus and is not under conscious control. However, Pavlov noted that the dogs would often begin salivating in the absence of food and smell. He quickly realized that this salivary response was not due to an automatic, physiological process.


http://www.hermes-press.com/Pavlov3.gif

The Development of Classical Conditioning Theory

Based on his observations, Pavlov suggested that the salivation was a learned response. The dogs were responding to the sight of the research assistants' white lab coats, which the animals had come to associate with the presentation of food. Unlike the salivary response to the presentation of food, which is an unconditioned reflex, salivating to the expectation of food is a conditioned reflex.
Pavlov then focused on investigating exactly how these conditioned responses are learned or acquired. In a series of experiments, Pavlov set out to provoke a conditioned response to a previously neutral stimulus. He opted to use food as the unconditioned stimulus, or the stimulus that evokes a response naturally and automatically. The sound of a metronome was chosen to be the neutral stimulus. The dogs would first be exposed to the sound of the ticking metronome, and then the food was immediately presented.
After several conditioning trials, Pavlov noted that the dogs began to salivate after hearing the metronome. "A stimulus which was neutral in and of itself had been superimposed upon the action of the inborn alimentary reflex," Pavlov wrote of the results. "We observed that, after several repetitions of the combined stimulation, the sounds of the metronome had acquired the property of stimulating salivary secretion" (26). In other words, the previously neutral stimulus (the metronome) had become what is known as a conditioned stimulus that then provoked a conditioned response (salivation).

The Impact of Pavlov's Research

Pavlov's discovery of classical conditioning remains one of the most important in psychology's history. In addition to forming the basis of what would become behavioral psychology, the conditioning process remains important today for numerous applications, including behavioral modification and mental health treatment. Classical conditioning is often used to treat phobias, anxiety and panic disorders.
One interesting example of the practical use of classical conditioning principles is the use of taste aversion to prevent coyotes from preying on domestic livestock (Gustafson et al., 1974). A conditioned taste aversion occurs when a neutral stimulus (eating some type of food) is paired with an unconditioned response (becoming ill after eating the food). Unlike other forms of classical conditioning, this type of conditioning does not require multiple pairings in order for an association to form. In fact, taste aversions generally occur after just a single pairing. Ranchers have found useful ways to put this form of classical conditioning to good use to protect their herds. In one example, mutton was injected with a drug that produces severe nausea. After eating the poisoned meat, coyotes then avoided sheep herds rather than attack them (Gustafson et al., 1976).
While Pavlov's discovery of classical conditioning formed an essential part of psychology's history, his work continues to inspire further research today. Between the years 1997 and 2000, more than 220 articles appearing in scientific journals cited Pavlov's early research on classical conditioning (Hock, 69). While Pavlov may not have been a psychologist, his contributions to psychology have help make the discipline what it is today and will likely continue to shape our understanding of human behavior for years to come.


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