Evaluating Operational Definitions A longitudinal study that observes first-born children's behavior before and after the birth of a sibling is particularly vulnerable to a ____ threat since rapid cognitive and physical change normally occur at this age.
A)history
B)maturation
C)selection
D)testing

Question

Quizplus · Accepted Answer

The maturation threat is the most likely in this scenario as rapid cognitive and physical changes occur in children at this age regardless of whether or not a sibling is born. The other threats (history, selection, and testing) are less likely to apply in this situation.

Evaluating Operational Definitions a Longitudinal Study That Observes First-Born Children's