The major obstacle in recognizing psychology as a legitimate field of study was the abstract nature of human thought. To gain acceptance within the scientific community, psychologists had to employ scientific methods, including observation and experimentation, to...
Psychology
Classical conditioning
The impetus for the most US behaviorist movement was neither American nor psychologist. Ivan Pavlov was a Russian physiologist researching the salivating response to stimuli. The dogs in his experiment salivated when presented with stimuli such as food, but he noticed...
Puzzle boxes
Edward Thorndike, an American psychologist, was a pioneer of experimental behaviorism. He broke new ground in designing devices such as puzzle boxes to study animal behavior. In these studies, he followed in Pavlov’s footsteps but interpreted the principle of...
Positive and negative conditioning
Thorndike‘s experiments provided a base structure for almost all subsequent behaviorism experiments. The model of administering an experimental subject with a particular stimulus or task under controlled circumstances came to be known as instrumental conditioning — as...
The Law of Effect
In 1905, Thorndike formalized the findings from his experiments into what we know today as The Law of Effect. This states that behavior that results in a pleasant outcome is more likely to be repeated, whereas behavior that leads to an unpleasant outcome is less...
Behaviourist Manifesto
In 1913 John B Watson, chair of the Psychology Department at Johns Hopkins University, presented a lecture that became known in history books as the ‘Behaviorist Manifesto’, in which he advocated abandoning ‘All Talk Of Mental States’ and proposed that the only...
The Little Albert experiment
John B. Watson's most famous record of experiments took place in 1920, testing whether classical conditioning could be used on children to produce an emotional response through neutral stimulus by misplacing distress from two different stimuli. Albert B., a healthy...
A blank slate
At the time of Watson's advocacy of behavioral psychology, many of his companions were supporting the idea of genetics. Watsons, however, opposed the notion, coming down firmly on the 'nurture' side of the nature versus nurture argument. Human behavior, he asserted,...
A behaviourist’s guide to bringing up baby
Shortly after Little Albert’s experiment, Watson was forced out of his academic post when it became known he was having an affair with his assistant, Rosalind Rayner. He took work in advertising, where his understanding of psychology led to a highly successful career....
Experimental ethics
Although Watson is often regarded as the founder of behaviorism, his contributions to psychology are highly debated. Animal experimentation on human subjects, and the infamous Little Albert experiment, in particular, raises many ethical questions. Not much was done to...
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Sensory processes
We receive information about the outside world through our senses, specifically our eyes, ears, nose, tongue, and skin. Specialized nerve cells, which have developed to respond to particular external stimuli, such as light or sound, give rise to the raw material of...
Neural pathways
Neurons are the smallest units of the nervous system. Each neuron contains a cell nucleus (the cell body) surrounded by dendrites and axons. Dendrites receive messages from other neurons and send them back along axons. A single neuron can communicate with thousands of...
Areas of the brain
In the brain, electrical impulses are sent via neurons towards the sensory receptors in order to alert us of an event happening around us. They enter the brain through the olfactory bulb (the nose), through the optic nerve (eyes), and into the thalamus (spinal cord)....
Brain damage and what it can tell us
The first real evidence about localization of function in the brain comes from the study of people with brain injuries. One famous patient was Phineas P. Gage, whose injury changed his personality. With the patient’s severe speech disorder, physiologist Paul Broca...
Consciousness
Knowledge of the physiology and anatomy of the human body should tell us a lot about how our sense data is processed in the brain. Yet, relatively little is known about how the brain processes these sensations, or what it is like to perceive them. Consciousness is...
Free Course in Semiology
A completely and truly free course on Semiology (Semiotics). Learn about the meaning of signs, how and why did the field emerged. What is the relationship between the street signs and the signs that we use every day - words.
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