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 differences

Question

Quizplus · Accepted Answer

The study has revealed cohort differences, meaning that the differences in problem-solving ability are likely due to differences in experiences and exposures between the two age groups. This is supported by the suspected causes of the differences, such as lack of access to technology and education, which are likely related to the time period in which the 80-year-olds grew up. The other answer choices, experimenter bias and placebo effect, do not fit the scenario described in the question. Age-related differences are a given in this scenario, but the study reveals more specific differences between two age groups within a larger age range.

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