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The Encyclopedia of Psychology
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The Encyclopedia of Psychology is where we record and analyze the evolution of the field. On this page, you will find research submitted by third parties and reviewed by our team.

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Search Our Encyclopedia of Psychology Directory

  • Psychology Today Online

    Information about current research in psychology presented for the lay reader.

    Added: April 30, 2000 Hits: 3564

  • Perceptual Analysis of Automobile Accidents

    In this article, we shall provide a brief overview of human information processing limitations and explain how they can contribute to road accidents. This is a "first-principles" approach to accident investigation because it draws on knowledge of basic human psychological processes. Instead of looking at the driver from the outside, we try to understand his/her mental processing and how it interacts with the environment.

    Added: April 30, 2000 Hits: 2763

  • Map Makers Can Avoid Confusing the Color Blind

    Color blindness is not a single problem but a variety of problems that affect color vision. Only a very small portion of people do not see color at all, but view the world in shades of gray. The most common type of color blindness is red/green, which has two forms. Some people are missing red receptor cones and others are missing green receptor cones. People with different forms of red/green color blindness have slight differences in the way they perceive color. Another form of color blindness is blue/yellow, which is less common. While only 8 percent of men are color-blind, they make up 95 percent of the 9,000,000 people in the U.S. who suffer color-vision impairment.

    Added: April 29, 2000 Hits: 2673

  • Psychological Investigations of Unconscious Perception

    This paper reviews the history of psychological investigations of unconscious perception and summarizes the current status of experimental research in this area of investigation. The research findings described in the paper illustrate how it is possible to distinguish experimentally between conscious and unconscious perception. The most successful experimental strategy has been to show that a stimulus can have qualitatively different consequences on cognitive and affective reactions depending on whether it was consciously or unconsciously perceived. (in pdf)

    Added: April 29, 2000 Hits: 5949

  • Skinnerbots Project

    Development of a comprehensive theory of operant conditioning using robots (Skinnerbots) to demonstrate the workability of the theories developed.

    Added: April 27, 2000 Hits: 1103

  • Gene Mutation Upsets Mammalian Biological Clock

    HHMI researchers pinpoint the cause of a mutation that switches a hamster's biological clock to a 20-hour day. Identifying the cause of the tau mutation offers researchers a new tool for understanding biological clocks in humans, as well as a potential target for drugs that control the biological clock.

    Added: April 25, 2000 Hits: 983

  • Arizona Psychological Association

    Arizona Psychological Association Website.

    Added: April 22, 2000 Hits: 764

  • Generalized Anxiety Disorder

    Excessive, almost daily, anxiety and worry for >= 6 mo about a number of activities or events. Generalized anxiety disorder is common, affecting 3 to 5% of the population within a 1-yr period. Women are twice as likely to be affected as men. The disorder often begins in childhood or adolescence but may begin at any age.

    Added: April 19, 2000 Hits: 1435

  • Munchausen Syndrome

    Repeated fabrication of physical illness--usually acute, dramatic, and convincing--by a person who wanders from hospital to hospital for treatment. Munchausen patients may simulate many physical disorders (eg, MI, hematemesis, hemoptysis, acute abdominal conditions, FUO). A patient's abdominal wall may be a crisscross of scars, or a digit or a limb may have been amputated.

    Added: April 19, 2000 Hits: 758

  • Obsessive-Compulsive Disorder

    A disorder characterized by recurrent, unwanted, intrusive ideas, images, or impulses that seem silly, weird, nasty, or horrible (obsessions) and by urges to do something that will lessen the discomfort due to the obsessions (compulsions). Obsessive-compulsive disorder occurs about equally in men and women and affects 1.6% of the population during any 6-mo period.

    Added: April 19, 2000 Hits: 3626

  • Panic Attacks and Panic Disorder

    Panic attacks are common, affecting > 1/3 of the population in a single year. Most persons recover without treatment; a few develop panic disorder. Panic disorder is uncommon, affecting < 1% of the population in a 6-mo period. Panic disorder usually begins in late adolescence or early adulthood and affects women two to three times more often than men.

    Added: April 19, 2000 Hits: 883

  • Paraphilias

    Disorders characterized by long-standing, intense, sexually arousing fantasies, urges, or behaviors that involve inanimate objects, actual or imagined suffering or humiliation of oneself or one's partner, or nonconsenting partners and that are associated with clinically important distress or disability. These arousal patterns are considered deviant because they are often obligatory for sexual functioning (ie, erection or orgasm cannot occur without the stimulus), may involve inappropriate partners (eg, children), and cause significant distress or impairment in social, occupational, or other important areas of functioning.

    Added: April 19, 2000 Hits: 2037