The American Psychological Society was founded in 1988 to represent the interests of academic, applied, and science-oriented psychology and psychologists. The formation of APS originated from the Assembly for Scientific and Applied Psychology (ASAP), a group that attempted to reform the American Psychological Association (APA) to give the scientists greater representation and autonomy. As of early…
In her long and productive career, Anne Anastasi has produced not only several classic texts in psychology but has been a major factor in the development of psychology as a quantitative behavioral science. To psychology professionals, the name Anastasi is synonymous with psychometrics, since it was she who pioneered understanding how psychological traits are influenced, developed, and measured. In…
Anger is usually caused by the frustration of attempts to attain a goal, or by hostile or disturbing actions such as insults, injuries, or threats that do not come from a feared source. The sources of anger are different for people at different periods in their lives. The most common cause of anger in infants, for example, is restraint of activity. Children commonly become angry due to restrictive…
Biologists believe that chimpanzees share at least 98.4 percent of the same DNA as humans. Gorillas have a genetic composition which is at least 97 percent consistent with that of humans. Because the advancement of scientific technology has increasingly demonstrated similarities between animals and people, popular attitudes toward the use of animals in research and scientific experimentation have …
Symptoms of anorexia, or anorexia nervosa, include significant weight loss, continuation of weight loss despite thinness, persistent feeling of being fat even after weight loss, exaggerated fear of gaining weight, loss of menstrual periods, preoccupation with food, calories, nutrition and/or cooking, dieting in secret, compulsive exercising, sleep disorders, and a pattern of binging and purging. T…
The two most common types of antidepressants are tricyclic antidepressants (TCAs) and selective serotonin re-uptake inhibitors (SSRIs). Examples of TCAs include nortriptyline (also known by the brand name Pamelor), imipramine (Tofranil), and desipramine (Norpramin). Examples of SSRIs include fluoxetine (Prozac), sertraline (Zoloft), and paroxetine (Paxil). Clinical studies have shown that some peo…
Antisocial behavior can be broken down into two components: the presence of antisocial (i.e., angry, aggressive, or disobedient) behavior and the absence of prosocial (i.e., communicative, affirming, or cooperative) behavior. Most children exhibit some antisocial behavior during their development, and different children demonstrate varying levels of prosocial and antisocial behavior. Some children…
About 3% of males and 1% of females develop antisocial personality disorder, which is essentially the adult version of childhood conduct disorder. Antisocial personality disorder is only diagnosed in people over age 18, the symptoms are similar to those of conduct disorder, and the criteria for diagnosis include the onset of conduct disorder before the age of 15. According to the Diagnostic and St…
Stimulated by real or imagined dangers, anxiety afflicts people of all ages and social backgrounds. When the anxiety results from irrational fears, it can disrupt or disable normal life. Some researchers believe anxiety is synonymous with fear, occurring in varying degrees and in situations where people feel threatened by some danger. Others describe anxiety as an unpleasant emotion caused by unid…
The Apgar Score is the sum of numerical results from tests performed on newborn infants. The tests were devised in 1953 by pediatrician Virginia Apgar (1909-1974). The primary purpose of the Apgar series of tests is to determine as soon as possible after birth whether an infant requires any medical attention, and to determine whether transfer to a neonatal (newborn infant) intensive care unit is n…
In contrast to neurological problems that affect the physical ability to speak or perform other linguistic functions, aphasia involves the mental ability to manipulate speech sounds, vocabulary, grammar, and meaning. There are several different types of aphasia. Each has different symptoms and is caused by damage to a different part of the brain. The great majority of aphasias are caused by damage…
Applied psychology can be best understood by comparing it to the area of psychology known as basic psychology, which is concerned with answering questions about behavior through psychological theory and research. Applied psychology utilizes this knowledge to actively intervene in the treatment of individuals with mental or emotional disorders, and is also employed in business, education, and gover…
Archetypes are primordial images and symbols found in the collective unconscious, which—in contrast to the personal unconscious—gathers together and passes on the experiences of previous generations, preserving traces of humanity's evolutionary development over time. Carl Jung began to evolve his theory of archetypes around 1910 while working with patients at the Burghö…
The study of artificial intelligence, referred to as AI, has accelerated in recent years as advancements in computer technology have made it possible to create more and more sophisticated machines and software programs. The field of AI is dominated by computer scientists, but it has important ramifications for psychologists as well because in creating machines that replicate human thought, much is…
Art therapy, sometimes called expressive art or art psychology, encourages self-discovery and emotional growth. It is a two-part process, involving both the creation of art and the discovery of its meaning. Rooted in Sigmund Freud and Carl Jung's theories of the subconscious and unconscious, art therapy is based on the premise that visual symbols and images are the most accessible and natur…
Psychological assessment is used for a variety of purposes, ranging from screening job applicants to providing data for research projects. Most assessment methods fall into one of three categories: observational methods, personality inventories, or projective techniques. Observational assessment is performed by a trained professional either in the subject's natural setting (such as a classr…
In the cognitive development theory of Jean Piaget, assimilation is one of two complementary activities involved in adaptation, the process of learning from and adjusting to one's environment. Assimilation consists of taking in new information and incorporating it into existing ways of thinking about the world. Conversely, accommodation is the process of changing one's existing ideas…
Advanced primarily by a succession of 18th- and 19th-century British philosophers, associationism anticipated developments in the modern field of psychology in a variety of ways. In its original empiricist context, it was a reaction against the Platonic philosophy of innate ideas that determined, rather than derived from, experience. Instead, the associationists proposed that ideas originated in e…
Many developmental psychologists view attachment—the special relationship between infant and care-giver—as an important building block for later relationships and adult personality. Since attachment plays a central role in theories of social and emotional development, the scientific study of attachment has remained in the forefront of developmental psychology for the past several dec…
Attention describes the focusing of perceptive awareness on a particular stimulus or set of stimuli that results in the relative exclusion of other stimuli and is often accompanied by an increase in the readiness to receive and to respond to the stimulus or set of stimuli involved. A state of attention may be produced initially in many ways, including as a conscious, intentional decision, as a nor…
Attention deficit/hyperactivity disorder (ADHD) refers to a combination of excessive motor restlessness, difficulty in controlling or maintaining attention to relevant events, and impulsive responding that is not adaptive. Children and adults experience the symptoms of ADHD in most areas of their life. It affects their performance in school or at work, depending on their age, and it affects them s…
People hold complex relationships between attitudes and behavior that are further complicated by the social factors influencing both. Behaviors usually, but not always, reflect established beliefs and attitudes. For example, a man who believes strongly in abstinence before marriage may choose to remain a virgin until his wedding night. Under other circumstances, that same man may engage in premari…
Attitudes have three main components: cognitive, affective, and behavioral. The cognitive component concerns one's beliefs; the affective component involves feelings and evaluations; and the behavioral component consists of ways of acting toward the attitude object. The cognitive aspects of attitude are generally measured by surveys, interviews, and other reporting methods, while the affect…
Both personal characteristics and environment play a role in interpersonal attraction. A major determinant of attraction is propinquity, or physical proximity. People who come into contact regularly and have no prior negative feelings about each other generally become attracted to each other as their degree of mutual familiarity and comfort level increases. The situation in which people first meet…
A major concept in the study of attribution theory is locus of control: whether one interprets events as being caused by one's own behavior or by outside circumstances. A person with an internal locus of control, an "internal," for example, will believe that her performance on a work project is governed by her ability or by how hard she works. An "external" will …
Adolf Hitler and his troops. Authoritarian personality types project their own weaknesses onto groups they denigrate as inferior. (Reproduced with permission.) Theodor Adorno (1903-1969) led a team of researchers at the University of California, Berkeley, to determine whether there was a correlation between anti-Semitism and certain personality traits. While the original goal had been the i…
First described by Dr. Leo Kanner in 1943, autism is a severe psychological disorder that affects an estimated four children in 10,000. Autism manifests itself in early childhood. The autistic child is impaired socially, in language development, and exhibits other behavioral problems. This disorder is also known as infantile or childhood autism and Kanner's autism. The occurrence of autism …
Autoeroticism is the scientific term used to describe masturbation, the stimulation of the genital organs to achieve orgasm. Although masturbation was widely condemned in most premodern societies, and has been the subject of remarkable and persistent superstitions and extreme taboos, there is evidence that contemporary attitudes toward masturbation are becoming increasingly tolerant of this behavi…
The nervous system consists of two main structures, the central nervous system (the brain and the spinal cord) and the peripheral nervous system (the sense organs and the nerves linking the sense organs, muscles, and glands to the central nervous system). The structures of the peripheral nervous system are further subdivided into the autonomic nervous system (automatic bodily processes) and the so…
In aversive conditioning, the client is exposed to an unpleasant stimulus while engaging in the targeted behavior, the goal being to create an aversion to it. In adults, aversive conditioning is often used to combat addictions such as smoking or alcoholism. One common method is the administration of a nausea-producing drug while the client is smoking or drinking so that unpleasant associations are…