__________ samples generally become more biased as the investigation proceeds because of __________.

Question

Quizplus · Accepted Answer

Longitudinal samples can become more biased as time goes on due to selective attrition, where participants drop out of the study for various reasons. This can lead to a non-representative sample of individuals who are still participating in the study. Cross-sectional samples may also be affected by cohort effects, but this is not a factor that has a greater impact as the investigation proceeds. Microgenetic samples are typically used to examine the process of change over time, rather than assessing bias in the sample.

__________ Samples Generally Become More Biased as the Investigation Proceeds