Which branch of psychology grew dramatically in the aftermath of World War 2?

In this section we will review the history of psychology with a focus on the important questions that psychologists ask and the major approaches (or schools) of psychological inquiry. The schools of psychology that we will review are summarized in , and presents a timeline of some of the most important psychologists, beginning with the early Greek philosophers and extending to the present day. and both represent a selection of the most important schools and people; to mention all the approaches and all the psychologists who have contributed to the field is not possible in one chapter.

The approaches that psychologists have used to assess the issues that interest them have changed dramatically over the history of psychology. Perhaps most importantly, the field has moved steadily from speculation about behavior toward a more objective and scientific approach as the technology available to study human behavior has improved (Benjamin & Baker, 2004). There has also been an increasing influx of women into the field. Although most early psychologists were men, now most psychologists, including the presidents of the most important psychological organizations, are women.

Table 1.2 The Most Important Approaches (Schools) of PsychologySchool of psychologyDescriptionImportant contributorsStructuralismUses the method of introspection to identify the basic elements or “structures” of psychological experienceWilhelm Wundt, Edward B. TitchenerFunctionalismAttempts to understand why animals and humans have developed the particular psychological aspects that they currently possessWilliam JamesPsychodynamicFocuses on the role of our unconscious thoughts, feelings, and memories and our early childhood experiences in determining behaviorSigmund Freud, Carl Jung, Alfred Adler, Erik EricksonBehaviorismBased on the premise that it is not possible to objectively study the mind, and therefore that psychologists should limit their attention to the study of behavior itselfJohn B. Watson, B. F. SkinnerCognitiveThe study of mental processes, including perception, thinking, memory, and judgmentsHermann Ebbinghaus, Sir Frederic Bartlett, Jean PiagetSocial-culturalThe study of how the social situations and the cultures in which people find themselves influence thinking and behaviorFritz Heider, Leon Festinger, Stanley Schachter

Figure 1.4 Female Psychologists

Although most of the earliest psychologists were men, women are increasingly contributing to psychology. The first female president of the American Psychological Association was Mary Whiton Calkins (1861–1930). Calkins made significant contributions to the study of memory and the self-concept. Mahzarin Banaji (left), Marilynn Brewer (not pictured), and Linda Bartoshuk (right) are all recent presidents of the American Psychological Society.

Figure 1.5 Timeline Showing Some of the Most Important Psychologists

Although it cannot capture every important psychologist, this timeline shows some of the most important contributors to the history of psychology.

Although psychology has changed dramatically over its history, the most important questions that psychologists address have remained constant. Some of these questions follow, and we will discuss them both in this chapter and in the chapters to come:

• Nature versus nurture. Are genes or environment most influential in determining the behavior of individuals and in accounting for differences among people? Most scientists now agree that both genes and environment play crucial roles in most human behaviors, and yet we still have much to learn about how nature (our biological makeup) and nurture (the experiences that we have during our lives) work together (Harris, 1998; Pinker, 2002). The proportion of the observed differences on characteristics among people (e.g., in terms of their height, intelligence, or optimism) that is due to genetics is known as the heritability of the characteristic, and we will make much use of this term in the chapters to come. We will see, for example, that the heritability of intelligence is very high (about .85 out of 1.0) and that the heritability of extraversion is about .50. But we will also see that nature and nurture interact in complex ways, making the question of “Is it nature or is it nurture?” very difficult to answer.
• Free will versus determinism. This question concerns the extent to which people have control over their own actions. Are we the products of our environment, guided by forces out of our control, or are we able to choose the behaviors we engage in? Most of us like to believe in free will, that we are able to do what we want—for instance, that we could get up right now and go fishing. And our legal system is premised on the concept of free will; we punish criminals because we believe that they have choice over their behaviors and freely choose to disobey the law. But as we will discuss later in the research focus in this section, recent research has suggested that we may have less control over our own behavior than we think we do (Wegner, 2002).
• Accuracy versus inaccuracy. To what extent are humans good information processors? Although it appears that people are “good enough” to make sense of the world around them and to make decent decisions (Fiske, 2003), they are far from perfect. Human judgment is sometimes compromised by inaccuracies in our thinking styles and by our motivations and emotions. For instance, our judgment may be affected by our desires to gain material wealth and to see ourselves positively and by emotional responses to the events that happen to us.

Figure 1.6

President Barack Obama and Vice President Joe Biden (left photo) meet with BP executives to discuss the disastrous oil spill in the Gulf of Mexico (right photo). Psychologists study the causes of poor judgments such as those made by these executives.

• Conscious versus unconscious processing. To what extent are we conscious of our own actions and the causes of them, and to what extent are our behaviors caused by influences that we are not aware of? Many of the major theories of psychology, ranging from the Freudian psychodynamic theories to contemporary work in cognitive psychology, argue that much of our behavior is determined by variables that we are not aware of.
• Differences versus similarities. To what extent are we all similar, and to what extent are we different? For instance, are there basic psychological and personality differences between men and women, or are men and women by and large similar? And what about people from different ethnicities and cultures? Are people around the world generally the same, or are they influenced by their backgrounds and environments in different ways? Personality, social, and cross-cultural psychologists attempt to answer these classic questions.

Early Psychologists

The earliest psychologists that we know about are the Greek philosophers Plato (428–347 BC) and Aristotle (384–322 BC). These philosophers asked many of the same questions that today’s psychologists ask; for instance, they questioned the distinction between nature and nurture and the existence of free will. In terms of the former, Plato argued on the nature side, believing that certain kinds of knowledge are innate or inborn, whereas Aristotle was more on the nurture side, believing that each child is born as an “empty slate” (in Latin a tabula rasa) and that knowledge is primarily acquired through learning and experience.

Figure 1.7

The earliest psychologists were the Greek philosophers Plato (left) and Aristotle. Plato believed that much knowledge was innate, whereas Aristotle thought that each child was born as an “empty slate” and that knowledge was primarily acquired through learning and experience.

European philosophers continued to ask these fundamental questions during the Renaissance. For instance, the French philosopher René Descartes (1596–1650) also considered the issue of free will, arguing in its favor and believing that the mind controls the body through the pineal gland in the brain (an idea that made some sense at the time but was later proved incorrect). Descartes also believed in the existence of innate natural abilities. A scientist as well as a philosopher, Descartes dissected animals and was among the first to understand that the nerves controlled the muscles. He also addressed the relationship between mind (the mental aspects of life) and body (the physical aspects of life). Descartes believed in the principle of dualism: that the mind is fundamentally different from the mechanical body. Other European philosophers, including Thomas Hobbes (1588–1679), John Locke (1632–1704), and Jean-Jacques Rousseau (1712–1778), also weighed in on these issues.

The fundamental problem that these philosophers faced was that they had few methods for settling their claims. Most philosophers didn’t conduct any research on these questions, in part because they didn’t yet know how to do it, and in part because they weren’t sure it was even possible to objectively study human experience. But dramatic changes came during the 1800s with the help of the first two research psychologists: the German psychologist Wilhelm Wundt (1832–1920), who developed a psychology laboratory in Leipzig, Germany, and the American psychologist William James (1842–1910), who founded a psychology laboratory at Harvard University.

What branch of psychology grew dramatically in the aftermath of World War 2?

What field of psychology developed from ww2?

How did World War 2 impact the development of clinical psychology?

Why did clinical psychology increase in prominence just after World War II?