Evolution of Study

In the late nineteenth and early twentieth centuries, Wilhelm Wundt, often considered the founder of scientific psychology, aspired to study the most fundamental units (or structures) of the mind. Wundt and other European psychologists (called structuralists) focused much of their attention on the description of mental responses to external stimuli—in other words, on sensation and perception. Around the same time, educational philosopher William James developed functionalism in the United States. Functionalists avoided questions about what was happening in the mind and brain and focused on questions about why people respond the way they do to different stimuli.

Today, both the structuralist and the functionalist methodologies have been replaced, but the fundamental questions they addressed remain. Psychologists who study sensation and perception still conduct research into how sense organs and the brain work together to produce perceptions (proximate studies) and why people and other animals have their own particular Umwelts (ultimate studies). Results from proximate and ultimate studies typically lead to different kinds of insights about the human condition. Proximate studies lead to solutions for real-world problems, while studies of ultimate functions provide enlightenment about the evolution of human nature and humans' place in the world; they help identify what stimuli were important throughout human evolutionary history.

For example, the human ear is fine-tuned so that its greatest sensitivity is in the frequency range that matches sounds produced by the human voice. Clearly, this reflects the importance of communication—and, in turn, cooperation—throughout human evolution. More specifically, hearing sensitivity peaks nearer to the frequencies produced by female voices than male voices. This suggests that human language capacity may have evolved out of mother-infant interactions rather than from the need for communication in some other activity, such as hunting.

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Breaking Bulimia

Breaking Bulimia

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