2.10-2.13 Flashcards
genetic behavior
The field that seeks to
discover the influence of heredity and
the environment on individual differences in
human traits and development.
twin study
A study in which the behavioral the similarity of identical twins is compared with
the behavioral similarity of fraternal twins.
adoption study
seeks to discover whether behavioral and
psychological characteristics of adopted children are more like those of their adoptive parents or biological parents.
* Adoptive parents provided the home environment.
* Biological parents contributed to their heredity.
heridity-environment correlations
-Passive genotype-environment correlations
-Evocative genotype-environment correlations
-Active (niche-picking) genotype-environment correlations
Passive genotype-environment correlations
occur because biological parents, who are
genetically related to the child, provide a rearing environment for the child.
so for example: if the parents are both doctors when the children will definitely study medicine as well
Evocative genotype-environment correlations
occur because a child’s genetically-influenced characteristics elicit certain types of environments
For example, active, smiling children receive more social stimulation than passive, quiet children do
active -niche picking- genotype-environment correlations
occur when children seek out environments that they find compatible and stimulating
-the children who seek out the social context in which to interact with people, whereas shy children don’t.
the epigenetic view
Emphasizes that development is the result of an ongoing, bidirectional the interchange between heredity and environment
gene-environment GxE interaction
the interaction of a specific measured variation in the DNA and a specific measured the aspect of the environment
epigenetic mechanism
involve the actual molecular modification of the DNA strand as a result of environmental
inputs in ways that alter gene functioning
conclusion about heredity-environment interaction
- The relative contributions of heredity and environment are not additive.
- Genes produce proteins—or not—in many different environments throughout the life span.
- Complex behaviors are influenced by genes and environments in a way that gives people a propensity for a particular developmental trajectory.
- We also can author a unique developmental path by changing
the environment.