A researcher selects a sample of 6year-olds and interviews and tests them every 2 years for 14 years. Over these years, some of the subjects die or drop out of the study due to poor health. This phenomenon is referred to as _______.

Question

Quizplus · Accepted Answer

Selective attrition is the process of losing participants in a study over time due to various factors, including poor health or death. This can introduce bias into the study results if the participants who drop out are systematically different from those who remain in the study. Terminal drop refers specifically to a sudden decline in cognitive abilities shortly before death, and longitudinal loss and selective bias are not accurate descriptions of this phenomenon.

A Researcher Selects a Sample of 6year-Olds and Interviews and Tests