You have just become a lab manager at a prominent infant lab. The lab has some old data with 6-month-old infants that were collected 10 years ago. Your task is to recruit a new group of 6-month-olds to compare to the original group. What concerns do you have about this comparison?

Question

Quizplus · Accepted Answer

Cohort effects are a concern because the new group of 6-month-olds has grown up in a different time period than the original group, potentially affecting the comparison due to changes in societal, environmental, or technological factors over the decade. Attrition is not relevant in this context as it refers to participants dropping out of a study over time, which does not apply to the scenario of comparing two distinct groups collected at different times.

You Have Just Become a Lab Manager at a Prominent