Bernadette, a Participant in a Longitudinal Study, Became Quite Familiar

question 49

Multiple Choice

Bernadette, a participant in a longitudinal study, became quite familiar with the test over time and, as a result, her performance improved. This limitation of longitudinal research is known as

• A) biased sampling.
• B) practice effects.
• C) random assignment.
• D) cohort effects.