Examlex
The internal validity of a study can be increased by using which of the following to create different research groups?
Nurture
The influence of environmental factors like education and upbringing on an individual's development.
Evolutionary Psychology
A theoretical approach in psychology that attempts to explain useful mental and psychological traits—such as memory, perception, or language—as adaptations, i.e., as the functional products of natural selection.
Natural Selection
A process in biology by which organisms that are better adapted to their environment tend to survive longer and transmit more of their genetic material to succeeding generations.
Mental Processes
Internal, covert activities of the mind or brain, such as thinking, problem-solving, and imagining.
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