Bernadette,a participant in a longitudinal study,became "test wise" over the length of the study.Her performance improved because of increased familiarity with the test,not due to developmental factors.This limitation of longitudinal research is known as
A) biased sampling.
B) practice effects.
C) random assignment.
D) cohort effects.

Question

Quizplus · Accepted Answer

Practice effects refer to improvements in performance over time due to increased familiarity with the test, which is a limitation of longitudinal research as it can confound the effects of development with repeated test-taking. Biased sampling describes the selection of a non-representative sample, random assignment refers to the random assignment of individuals to different groups, and cohort effects refer to differences in experiences and cultural norms between people of different ages or birth cohorts.

Bernadette,a Participant in a Longitudinal Study,became "Test Wise" Over the Length