Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Research Aptitude Steps of Research General Steps in Research
Some of the threats to internal validity in research are:
A. Quasi experimental design
B. Pre-Testing
C. Attrition
D. History
E. Maturation
Choose the correct answer from the options given below:
1
A, B and C only
2
B, C and D only
3
B, D and E only
4
C, D and E only