Heredity And Hormones Essay 3

675 words - 3 pages

Heredity and Hormones

Heredity and hormones both can affect an individual’s emotional life, learning, and behavior. The nervous system and the endocrine system are the two major systems that regulate behavior and the mental processes. The endocrine system is made up of glands that secrete chemical substances called hormones that help regulate body functions. Heredity is the passing of traits from a parent to their offspring. Hormones can also have dramatic effects on mood, the ability to learn, emotional reactions, and even the ability to resist disease. The endocrine system is a very complex system that consists of organs such as the pineal, pituitary, parathyroid, ...view middle of the document...

Genetic differences are only one of the causes of individual differences because people have different experiences that also affect their behavior. Behavior geneticists hope to identify which genes contribute to intelligence, talents, temperament as well as genetic predispositions to psychological and neurological disorders (Brunner,Nelen, Breakefield, Ropers, & Van Oost, 1993; Cunningham, 2003; D. Johnson, 1990; Loehlin, Willerman, & Horn, 1988; Plomin, 1999b; Plomin, DeFries, &McClearn, 1990; Plomin & Rende, 1991). One of the major contributions of behavior genetics is the study of drug abuse in laboratory animals and the development of species of laboratory animals especially susceptible to the effects of drugs. Comparisons of these animals may help us understand the psychological mechanism involved in drug addiction and alcoholism.
Evolutionary psychologists study the cause of behavior and mental processes that show the adaptive and survival value of these traits. Evolutionary psychologists focus on the behavioral traits that people have in common. They believe that our brains are “prewired” and that some behaviors are more easily learned than others. According to Darwin’s theory of natural selection, the organisms...

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