Examlex
Which basic approach to social research affords the fewest controls on extraneous variables?
Twin Studies
A research method used in psychology and genetics to determine the contribution of genetics versus environment on human development, behavior, and health by comparing monozygotic (identical) and dizygotic (fraternal) twins.
Monozygotic Twins
Identical twins that develop from a single fertilized egg and share the same genetic material.
Dizygotic Twins
also known as fraternal twins, are siblings that develop from two different eggs fertilized by two different sperm cells, sharing about 50% of their DNA.
Kinship Study
A research approach used to examine the genetic and environmental influences on traits, behaviors, and diseases by studying the similarities and differences among biological and non-biological relatives.
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