psychology (redirected from Psychological theories)

psychology, science or study of the thought processes and behavior of humans and other animals in their interaction with the environment. Psychologists study processes of sense perception, thinking, learning, cognition, emotions and motivations, personality, abnormal behavior, interactions between individuals, and interactions with the environment. The field is closely allied with such disciplines as anthropology and sociology in its concerns with social and environmental influences on behavior; physics in its treatment of vision, hearing, and touch; and biology in the study of the physiological basis of behavior. In its earliest speculative period, psychological study was chiefly embodied in philosophical and theological discussions of the soul.

Development of Modern Psychology

The De anima of Aristotle is considered the first monument of psychology as such, centered around the belief that the heart was the basis for mental activity. The foundations of modern psychology were laid by 17th-century philosopher Thomas Hobbes, who argued that scientific causes could be established for every sort of phenomenon through deductive reasoning. The mind-body theories of Rene Descartes, Baruch Spinoza, and G. W. Leibniz were equally crucial in the development of modern psychology, where the human mind's relation to the body and its actions have been significant topics of debate.

In England the empirical method employed in modern psychological study originated in the work of John Locke, George Berkeley, Thomas Reid, and David Hume. David Hartley, James Mill, John Stuart Mill, and Alexander Bain stressed the relation of physiology to psychology, an important development in the scientific techniques of modern psychology. Important contributions were made in the physiological understanding of human psychology by French philosopher Condillac, F. J. Gall, the German founder of phrenology, and French surgeon Paul Broca, who localized speech centers in the brain.

In the 19th cent., the laboratory work of Ernst Heinrich Weber, Gustave Fechner, Wilhelm Wundt, Hermann von Helmholtz, and Edward Titchener helped to establish psychology as a scientific discipline—both through the use of the scientific method of research, and in the belief that mental processes could be quantified with careful research techniques. The principle of evolution, stemming from Charles Darwin's theory of natural selection, gave rise to what became known as dynamic psychology. The new approach, presented by American psychologist William James in his Principles of Psychology (1890), looked at consciousness as an evolutionary process.

Out of the new orientation in psychology grew the clinical experiments in hysteria and hypnotism carried on by J. M. Charcot and Pierre Janet in France. Sigmund Freud, in his influential theory of the unconscious, gave a new direction to psychology and laid the groundwork for the psychoanalytic model. Freudian theory took psychology into such fields as education, anthropology, and medicine, and Freudian research methods became the foundations of clinical psychology.

The behaviorism of American psychologist John B. Watson was highly influential in the 1920s and 30s, with its suggestion that psychology should concern itself solely with sensory stimuli and behavioral reaction. Behaviorism has been important in modern psychology, particularly through the work of B. F. Skinner since the 1930s.

Equally important was the development of Gestalt psychology by German psychologists Kurt Koffka, Wolfgang Köhler, and Max Wertheimer. Gestalt theory contended that the task of psychology was to study human thought and behavior as a whole, rather than breaking it down into isolated instances of stimulus and response.

Another influential school of psychology was developed in the 1950s and 60s by Abraham Maslow and Carl Rogers. Their humanistic theory asserts that people make rational, conscious decisions regarding their lives, and optimistically suggests that individuals tend to reach toward their greatest potential.

Modern Psychology

Modern psychology is divided into several subdisciplines, each based on differing models of behavior and mental processes. Psychologists work in a number of different settings, including universities and colleges, primary and secondary schools, government agencies, private industry, hospitals, clinics, and private practices. Recent years have seen a rise in the significance of applied psychology—as can be seen from the areas contemporary psychologists concern themselves with—with an attendant decline in the importance of psychology in academia. In the United States, clinical psychology has become a significant focus of the discipline, largely separate from psychological research. Clinical psychologists are responsible for the diagnosis and treatment of various psychological problems.

Biological models of behavior have become increasingly prominent in psychological theory, particularly with the development of various tools—such as the positron emission tomography (PET) scan—for mapping the brain. The field of neuropsychology, which studies the brain and the connected nervous system, has been an outgrowth of this contemporary focus on biological explanations of human thought and behavior. Cognitive models, derived from the Gestalt school of psychology, focus on the various thinking processes which mediate between stimuli and responses.

Educational psychology, derived from the 18th and 19th cent. educational reforms of Friedrich W. Froebel, Johann Pestalozzi, and their follower Johann Herbart, was later expanded by G. Stanley Hall and by E. L. Thorndike. It is concerned with the development of improved methods of teaching and learning.

Social psychology, developed by British psychologists William McDougall and Havelock Ellis, studies the effects of various social environments on the individual. Some other branches of the field include developmental psychology, which studies the changes in thought and behavior through the course of life; experimental psychology, which is the laboratory research involved in the understanding of the mind; and personality psychology, which deals specifically with individual personality and the processes by which it is formed.

In recent years a number of new fields of psychology have emerged. Industrial/organizational psychology, emerging from social psychology, focuses on the workplace and considers such topics as job satisfaction, leadership, and productivity. Health psychology examines how psychological factors contribute to pathology, and demonstrates how psychology can contribute to recovery and illness prevention for such somatic disorders as heart disease, cancer, and diabetes. In environmental psychology, research focuses on how individuals react to their physical environments, and suggests improvements which may be beneficial to psychological health. Other new areas of psychology include counseling psychology, school psychology, forensic psychology, and community psychology.

Bibliography

See R. Fancher, Pioneers in Psychology (1979); D. Robinson, An Intellectual History of Modern Psychology (1986); E. Hilgard, Psychology in America (1987); M. Ash and W. Woodward, Psychology in 20th Century Thought and Society (1989); R. B. Evans, V. S. Sexton, and T. C. Cadwallader, ed., The American Psychological Association (1992).

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psychology

Scientific discipline that studies mental processes and behaviour in humans and other animals. Literally meaning “the study of the mind,” psychology focuses on both individual and group behaviour. Clinical psychology is concerned with the diagnosis and treatment of mental disorders. Other specialized fields of psychology include child psychology, educational psychology, sports psychology, social psychology, and comparative psychology. The issues studied by psychologists cover a wide spectrum, including learning, cognition, intelligence, motivation, emotion, perception, personality, and the extent to which individual differences are shaped by genetics or environment. The methods used in psychological research include observation, interviews, psychological testing, laboratory experimentation, and statistical analysis.

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psychology

1. the scientific study of all forms of human and animal behaviour, sometimes concerned with the methods through which behaviour can be modified

2. Informal the mental make-up or structure of an individual that causes him or her to think or act in the way he or she does
www.psych.neu.edu/facllinks
www.sosig.ac.uk/psychology
www.clas.ufl.edu/users/gthursby/psi

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Psychology

The study of human behavior and mental processes. Psychology is sharply divided into applied and experimental areas. However, many fields are represented in both research and applied psychology.

Researchers in psychology study a wide range of areas. Cognitive research is often included as part of subdiscipline called cognitive science. This area examines central issues such as how mental process work, the relation between mind and brain, and the way in which biological transducing systems can convert physical regularities into perceptions of the world. Cognitive science is carved from the common ground shared by computer science, cognitive psychology, philosophy of mind, linguistics, neuropsychology, and cognitive anthropology. The study of human attention is a cognitive area that is central in the field. See Cognition

The study of consciousness involves such basic questions as the physiological basis of mental activity, the freedom of will, and the conscious and unconscious uses of memory. The latter topic can be classified under the rubric of implicit memory. See Instinctive behavior, Memory, Psycholinguistics, Sensation

Social psychology includes the study of interactions between individuals and groups, as well as the effects of groups on the attitudes, opinions, and behavior of individuals. The field covers such topics as persuasion, conformity, obedience to authority, stereotyping, prejudice, and decision making in social contexts. See Motivation, Personality theory

Developmental psychology has three subfields: life-span development, child development, and aging. Most research in the area concentrates on child development, which examines the development of abilities, personality, social relations, and, essentially, every attribute and ability seen in adults. See Intelligence

A clinical psychologist is usually known by the term psychologist, which in some states is a term that can be used only by a registered practitioner. A psychiatrist is a physician with a specialty in psychiatric treatment and, in most states, with certification as a psychiatrist by a board of medical examiners. A psychoanalyst is typically trained by a psychoanalytic institute in a version of the Freudian method of psychoanalysis. A large number of practitioners qualify both as psychoanalysts and psychiatrists. See Psychoanalysis

Neuropsychologists are usually psychologists, who may come from an experimental or a clinical background but who must go through certification as psychologists. They treat individuals who have psychological disorders with a clear neurological etiology, such as stroke.

Clinical practice includes individual consultation with clients, group therapy, and work in clinics or with teams of health professionals. Psychological therapists work in many settings and on problems ranging from short-term crises and substance abuse, to psychosis and major disorders. While there are definite biases within each field, it is possible for a practitioner with any background to prefer behavior therapy, a humanistic approach, a Freudian (dynamic) approach, or an eclectic approach derived from these and other areas.

Nonclinical professional work in psychology includes the human-factors element, which traditionally is applied to the design of the interface between a machine and its human operator. Cognitive engineering is a branch of applied psychology that deals mainly with software and hardware computer design. Industrial psychology also includes personnel selection and management and organizational planning and consulting.

The use of psychology in forensic matters is a natural result of the fact that much of law is based on psychology. Psychologists have been involved in jury selection, organization of evidence, evaluation of eyewitness testimony, and presentation of material in court cases. Psychiatrists and psychologists are also called on to diagnose potential defendants for mental disorders and the ability to stand trial.