Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Research Aptitude Steps of Research Research Design
In 'two groups, randomized subjects post test only' research design which of the following may be the source for jeopardizing validity?
(A) Pretesting procedures
(B) Measuring instruments
(C) Interaction of selection and the independent variable
(D) Reactive experimental procedures
(E) Statistical regression
Choose the correct answer from the options given below :
1
(A) and (B) only
2
(B) and (C) only
3
(C) and (D) only
4
(D) and (E) only