Identify a possible reason for the changes in fluid and crystallized intelligence of different age groups in John Horn's cross-sectional study.
A) secular trends
B) cohort effects
C) declining IQ with age
D) biases in IQ testing

Question

Quizplus · Accepted Answer

Cohort effects refer to the influence of a person's birth cohort (group of individuals born around the same time) on their development and characteristics. Horn's cross-sectional study compared individuals of different age groups at the same time, which means that the results could be influenced by cohort effects. For example, different birth cohorts may have had different access to education or exposure to technology, which could impact their performance on cognitive tests. This could contribute to the observed changes in fluid and crystallized intelligence across age groups in the study.

Identify a Possible Reason for the Changes in Fluid and Crystallized