When events (e.g.life stressors)outside of the researcher's control have the likelihood to affect a participant's response,especially in longitudinal studies,this threat to validity is
A)maturation.
B)mortality.
C)history.
D)statistical regression.
E)testing.

Question

Quizplus · Accepted Answer

History refers to events outside of the study that occur during the study and may affect participants' responses. This is especially relevant in longitudinal studies, where participants are followed over an extended period of time and may experience various life stressors or events that could impact their responses. Maturation refers to changes that occur naturally over time (e.g. aging) and may impact participants' responses. Mortality refers to participants dropping out of the study, which could bias the results if those who drop out have different characteristics than those who remain. Statistical regression refers to a phenomenon where extreme scores on a measure tend to move closer to the mean on subsequent measurements, regardless of intervention or treatment. Testing refers to the fact that participants' scores may be impacted by taking the same test multiple times, as they may become more familiar with the test and improve their scores independent of any treatment or intervention.

When Events (E