The main types of validity encountered in research design and methodology are

A. Internal

B. External

C. Construct

D. Statistical conclusion.

Choose the correct answer from the options given below:

The correct answer is A, B, C and D only.

Key Points The correct answer is:

A. Internal
B. External
C. Construct
D. Statistical conclusion

All four options (A, B, C, D) represent the main types of validity encountered in research design and methodology.

Internal validity refers to the extent to which a study's design and implementation allow for causal inferences and minimize confounding factors.

External validity pertains to the generalizability of research findings to other populations, settings, or conditions.

Construct validity concerns the extent to which the measures and operationalizations used in a study accurately capture and represent the underlying constructs or concepts of interest.

Statistical conclusion validity refers to the soundness and accuracy of the statistical analyses performed and the inferences drawn from the data.

All of these types of validity are crucial considerations in ensuring the rigor and quality of research studies.