Flynn Effect

Definition

The Flynn Effect refers to the observed phenomenon where average intelligence scores on IQ tests have been steadily increasing over time. This increase cannot be attributed solely to genetic factors and challenges psychometric theories that emphasize a significant genetic basis for measured IQ.

Related terms

Environmental Factors:

External influences such as education, nutrition, and cultural changes that contribute to the rise in average intelligence scores.

Test Norms: Standards used to compare an individual's test performance with others of similar characteristics (age, gender). The Flynn Effect suggests that these norms need to be updated regularly due to increasing overall intelligence levels.

Heritability:

The extent to which individual differences in traits are due to genetic factors. The Flynn Effect highlights that while genetics still play a role in intelligence, it is not the sole determinant of IQ scores.