This term refers to the measure of how two variables are related to each other. It helps determine if there is a relationship between intelligence and genetics or environment.
T-test: This is a statistical technique that compares the means of two groups to determine if they are significantly different from each other. Psychologists can use this test to compare the influence of genetics and environment on intelligence.
Regression analysis: This is a statistical technique that examines the relationship between one dependent variable (intelligence) and one or more independent variables (genetics, environment). It can help determine how much each factor contributes to intelligence.