Examlex
It is difficult for younger children to understand why the driver of a car cannot see them if they can see the car. This illustrates the preoperational limitation known as
IQ Score
A measure of a person's intelligence as indicated by an intelligence test, relative to the average for people of the same age.
Heritability Estimates
Statistical calculations that attempt to measure how much of the variation in a trait within a population can be attributed to genetic differences among individuals.
Fraternal Twins
Twins that develop from two different eggs fertilized by two different sperm, resulting in siblings that are genetically distinct.
Identical Twins
Twins that develop from a single fertilized egg, sharing 100% of their genetic material and often used in studies to explore the nature vs. nurture debate.
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