Behavior Genetics and Evolutionary Psychology Flashcards
Chromosome
A threadlike structure made largely of DNA molecules
DNA
A spiraling, complex molecule containing genes
Genome
An organism’s entire collection of genes
Identical Twin
Same sex only
Fraternal Twin
Same or opposite sex
No more genetically alike than other siblings
Traits identical twins are more alike in than fraternal twins:
Personality traits such as extraversion (sociability) and neuroticism (emotional instability).
Behaviors/outcomes such as the rate of divorce.
Abilities such as overall Intelligence test scores.
Similarities found in identical twins raised apart:
Personality, styles of thinking and relating
Abilities/intelligence test scores
Attitudes
Interests, tastes
Specific fears
Brain waves, heart rate
Parenting has an influence on:
Religious beliefs
Values
Manners
Attitudes
Politics
Habits
Gene-Environment Interaction
Genes turn each other on and off in response to environmental conditions
Epigenetics
The study of how this happens: The environment acts on the surface of genes to alter their activity
Evolutionary Psychology
The study of how evolutionary principles help explain the origin and function of the human mind, traits, and behaviors.