Dr. Stamina's longitudinal study on Native American personality styles was criticized because he failed to enlist participants who adequately represented the Native American population. This limitation is known as
A) cohort effects.
B) selective attrition.
C) practice effects.
D) biased sampling.

Question

Quizplus · Accepted Answer

Biased sampling occurs when the sample used in a study is not representative of the population being studied. This was the issue with Dr. Stamina's study, as he did not enlist participants who adequately represented the Native American population. Cohort effects refer to differences between age groups, selective attrition refers to participants dropping out of a study over time, and practice effects refer to the improvement participants may experience simply from repeated exposure to a task. None of these are applicable to the limitation in Dr. Stamina's study.

Dr Stamina's Longitudinal Study on Native American Personality Styles Was