UGC NET Research Q36

Question

Match List - I with List - II.
List - I (Threats to Internal Validity)
A. Maturation threat
B. Attrition threat
C. History threat
D. Testing threat
List - II (Description)
I. When participants' behaviour changes as a function of having been tested previously
II. When some event outside the research project affects participants systematically
III. Occurs because of short or long term changes in a participant because of psychological changes like boredom, fatigue etc.
IV. When participants drop-out of a study, leading to a change in the nature of the sample