A researcher compared the bone density of a group of 40-year-old women to a group of 65-year-old women and found a significant difference. This is an example of which type of effect?

Question

Quizplus · Accepted Answer

The significant difference between the two groups is likely due to the influence of age, making it an age effect. Cohort effect refers to differences between groups that are due to growing up in different time periods, time of measurement effect refers to differences that are due to changes in the study environment, and cross-sectional effect refers to differences that are due to studying different groups at the same time.

A Researcher Compared the Bone Density of a Group of 40-Year-Old