14 - 320-327 • Nature-Nurture Controversy o The relative contributions of nature(genetic and biological inheritance and nurture(environmental

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Unformatted text preview: 320-327 • Nature-Nurture Controversy o The relative contributions of nature (genetic and biological inheritance) and nurture (environmental factors) in developmental processes has been and continues to be debated. o Psychologists investigate, by using both longitudinal and cross-sectional studies of subjects in each developmental period, how both nature and nurture influence behavior. When put together, the study data provide information about changes over the entire life span. • Heredity: o Mathematical estimate based on many observations in a certain groups that can be attributed to differences in nature of genetic makeup o Distinction: Genetically determined does not equal genetically fixed Genetically determined refers to the notion that certain inborn biological factors combine with environmental factors to influence a person’s personality • Biosocial Theory o a theory in behavioral and social science that suggests the attribution of disorders of personality and conditions of mind to the reaction of biologically determined personality traits to environmental stimuli • Identical twins are often studied in nature-nurture investigations (because identical twins develop from one egg, but fraternal twins develop from separate eggs and are genetically no more similar than are any brothers or sisters). o Studies have shown that identical twins are more similar in personalities, abilities, and interests than are other siblings. Even those identical twins separated at birth and reared apart, a fact that supports the contention that nature (heredity) may be more developmentally important than nurture. • Bottom Line: People are social (ie. Nurture) and biological (ie. Nature) organisms. These two aspects do not operate independently and interact often. ...
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This document was uploaded on 10/26/2011 for the course PSYCH 2400 at UVA.

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