SPECIAL FIELDS OF PSYCHOLOGY

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8. Development psychology

Developmental Psychology study of behavioral changes and continuity from infancy to old age. Much emphasis in psychology has been given to the child and to the deviant personality. Developmental psychology is particularly significant, then, in that it provides for formal study of children and adults at every stage of development through the life span.

Developmental psychology reflects the view that human development and behavior throughout the life span is a function of the interaction between biologically determined factors, such as height or temperament, and environmental influences, such as family, schooling, religion, and culture. Studies of these interactions focus on their consequences for people at different age levels. For example, developmental psychologists are interested in how children who were physically abused by their parents behave when they themselves become parents. Studies, although inconclusive, suggest that abused children often become abusive parents.

Other recent studies have focused on the relationship between the aging process and intellectual competence; contrary to the traditional notion that a person’s intellectual skills decline rapidly after the age of 55, research indicates that the decline is gradual. American studies of adulthood, building on the work of Erik Erikson, point to stable periods with a duration of 5 to 7 years, during which energy is expended on career, family, and social relationships, punctuated by “transitional” periods lasting 3 to 5 years, during which assessment and reappraisal of major life areas occurs. These transitional periods may be smooth or emotionally stormy; the “midlife crisis” is an example of such a transition. Whether such transitions are the same for men and women, and whether they are universal, is currently under study.

9. Social psychology

Social Psychology branch of psychology concerned with the scientific study of the behavior of individuals as influenced, directly or indirectly, by social stimuli. Social psychologists are interested in the thinking, emotions, desires, and judgments of individuals, as well as in their overt behavior. An individual’s inner states can be inferred only from some form of observable behavior. Research has also proved that people are affected by social stimuli whether or not they are actually in the presence of others and that virtually everything an individual does or experiences is influenced to some extent by present or previous social contacts.

Development of Theory. Social psychology is rooted in the earliest intellectual probes made by individuals into their relations with society. Many of the major problems of concern to contemporary social psychology were recognized as problems by social philosophers long before psychological questions were joined to scientific method. The questions posed by Aristotle, the Italian philosopher Niccol Machiavelli, the English philosopher Thomas Hobbes, and others throughout history are still asked, in altered form, in the work of present-day social psychologists.

The more recent history of social psychology begins with the publication in 1908 of two textbooks—each having the term social psychology in its title—that examine the impact of society on the development and behavior of individuals. One of these was written by the British psychologist William McDougall, and the other by the American sociologist Edward Alsworth Ross. McDougall framed a controversial theory of human instincts, conceived of as broad, purposive tendencies emerging from the evolutionary process. Ross, on the other hand, was concerned with the transmission of social behavior from person to person, such as the influence of one person’s emotions on another’s in a crowd, or the following of fads and fashions.

Another textbook on social psychology, published in 1924 by the American psychologist Floyd H. Allport, had an important influence on the development of social psychology as a specialization of general psychology. Allport extended the principles of associative learning to account for a wide range of social behavior. He thus avoided reference either to such mysterious social forces as were proposed by Ross or to the elaborate instinctive dispositions used by McDougall and his followers to account for social behavior. Through the remainder of the decade, the literature of social psychology continued to be devoted to similar discussions and controversies about points of view, and little empirical work, that is, work relying on experience or observation, of theoretical or practical significance was done.

Early Experimentation. In the 1930s empirical research was first undertaken on such matters as animal social behavior, group problem-solving, attitudes and persuasion, national and ethnic stereotypes, rumor transmission, and leadership. The German-American psychologist Kurt Lewin emphasized the necessity of doing theoretical analysis before conducting research on a problem, the purpose of the research being to clarify explanatory mechanisms hypothesized to underlie the behavior being studied. The theory proposes an explanation of certain behavior and allows the investigator to predict the specific conditions under which the behavior will or will not occur. The investigator then designs experiments in which the appropriate conditions are methodically varied and the occurrence of the behavior can be observed and measured. The results allow modifications and extensions of the theory to be made.

In 1939 Lewin together with two of his doctoral students published the results of an experiment of significant historical importance. The investigators had arranged to have the same adults play different leadership roles while directing matched groups of children. The adults attempted to establish particular climates—that is, social environmental conditions—of democratic, autocratic, or completely laissez-faire leadership. The reactions of the children in the groups were carefully observed, and detailed notes were taken on the patterns of social interaction that emerged. Although the experiment itself had many deficiencies, it demonstrated that something as nebulous as a democratic social climate could be created under controlled laboratory conditions.

The originality and success of this research had a liberating effect on other investigators. By the end of World War II, an outpouring of experimental research involving the manipulation of temporary social environments through laboratory stagecraft began. At the same time, important advances occurred in nonexperimental, or field, research in social psychology. The objective rather than the speculative study of social behavior is the current trend in social psychology.

Research Areas. Social psychology shares many concerns with other disciplines, especially with sociology and cultural anthropology. The three sciences differ, however, in that whereas the sociologist studies social groups and institutions and the anthropologist studies human cultures, the social psychologist focuses attention on how social groups, institutions, and cultures affect the behavior of the individual. The major areas of research in social psychology are the following.

Socialization. Social psychologists who study the phenomena of socialization, meaning the process of being made fit or trained for a social environment, are interested in how individuals learn the rules governing their behavior toward other persons in society, the groups of which they are members, and individuals with whom they come into contact. Questions dealing with how children learn language, sex role, moral and ethical principles, and appropriate behavior in general have come under intensive investigation. Also widely studied are the methods by which adults learn to adapt their patterns of behavior when they are confronted by new situations or organizations.