Age and Experience Are Confounded While Using the Cross-Sectional Design

Multiple Choice

Age and experience are confounded while using the cross-sectional design. This means that it cannot be determined if

A) findings for cohort groups are due to their similar experiences or similar age.
B) findings are due to the fact that age and life experience tend to be correlated.
C) differences across groups are due to differences in assignment to the treatment conditions.
D) differences across groups are due to age, experience, or the experimental manipulation.