A research study finds that 40-year-olds are better able to solve math problems than 80-year-olds.It is suspected that the differences in problem-solving ability result from the fact that 80-year-olds had fewer opportunities to study math and did not have access to calculators or computers.If true,the study has revealed:
A)experimenter bias.
B)a placebo effect.
C)age-related differences.
D)cohort effects.

Question

Quizplus · Accepted Answer

Differences that occur between people who were born and raised during different time periods are called cohort effects.

A Research Study Finds That 40-Year-Olds Are Better Able to Solve