A researcher finds that today's 70 year olds are less concerned about pollution than today's 30 year olds. This difference could be due to the _____ of the participants.
A) age
B) cohort
C) either or both of the above
D) only age or cohort but not both

Question

Quizplus · Accepted Answer

The difference in concern about pollution between today's 70 year olds and today's 30 year olds could be attributed to both age and cohort effects. Age effects refer to changes that occur as a result of growing older, while cohort effects are differences among individuals as a consequence of being born in different time periods.

A Researcher Finds That Today's 70 Year Olds Are Less