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Psychology Exam 1- Chapter 4

Chapter 4

Terms

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Behavior Genetics
Study of how modern behavior came to be and what they adapted from. Study differences and weigh effects and interplay of heridity and environment.
What can be learned from studying Identical Twins
If something is more heritable, Identical twins are more alike
What can be learned by comparing non-twin siblings and fraternal twins
If something is more environmental, Twins are alike because each set has 50% of the other's genes
What can be learned from comparing parents to children
If it isn't heritable, traits should be equally similar
Adopted kid with traits similar to genetic parents
traits are passed through genes
Adopted kid with traits similar to adoptive parents
traits are environmental
Temperament
Emotional excitability
Gene-Environment Interaction
Nature/Nurture
Passive Interaction
When a child passively receives from genes and environment (Shy)
Active Interaction
when a person chooses an environment based on their traits (Extrovert)
Molecular Behavior Genetics
Identify specific genes that influence behavior
Evolutionary Psychology
Focus on what makes us alike as humans
Natural Selection
Those who have adaptive traits survive
Adaptive trait
Something that isn't initially a trait, but over time, due to its usefulness, grows through an entire population and becomes a norm
Environmental Stimulation
More of this, the more the brain develops at a young age
Pruning
Gets rid of unused pathways in the brain in order to strengthen existing, more used sections

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