Paper 1 · Research Aptitude
UGC NET June 2024 Re-Exam (26.08.2024) Shift-II
In which of the following research designs is the problem of sample attrition likely to exist? Choose the correct answer from the options given below.
- 1. Representative study
- 2. Longitudinal study
- 3. Panel study
- 4. Cohort study
A1 and 2 only
B1, 2 and 4 only
C1, 3 and 4 only
D2, 3 and 4 only ✓ Correct
Correct answer: (D) 2, 3 and 4 only — Attrition is likely in longitudinal, panel and cohort studies, so the answer is 2, 3 and 4.
Explanation
★Attrition is likely in longitudinal, panel and cohort studies, so the answer is 2, 3 and 4.
★Sample attrition is the loss of participants over the course of a study.
★It arises when the same people are followed over time.
★A longitudinal study follows people over a long period, so statement 2 applies.
★A panel study and a cohort study also follow the same people over time, so statements 3 and 4 apply.
★A representative study measures at one point in time, so attrition is not a concern, excluding statement 1.
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