In which type(s)of study do researchers have to be concerned about selective attrition (the problem that some participants drop out before the study is complete)?
A)Longitudinal study
B)Cross-sectional study
C)Both longitudinal and cross-sectional studies, but mainly cross-sectional
D)Neither cross-sectional nor longitudinal studies

Question

In which type(s)of study do researchers have to be concerned about selective attrition (the problem that some participants drop out before the study is complete)?​
A)Longitudinal study
B)​Cross-sectional study
C)​Both longitudinal and cross-sectional studies, but mainly cross-sectional
D)​Neither cross-sectional nor longitudinal studies

Quizplus · Accepted Answer

In longitudinal studies, participants are followed over a period of time. Hence, selective attrition can be a major concern as participants may drop out before the study is complete. This can lead to biased results and can affect the internal validity of the study. In contrast, cross-sectional studies are typically conducted over a shorter period of time and do not involve follow-up assessments. Hence, selective attrition may not be as much of a concern in cross-sectional studies as it is in longitudinal studies.

In Which Type(s)of Study Do Researchers Have to Be Concerned