Question

Discuss threats to the validity of quantitative research studies and how the research can be "slanted" to meet the authors needs.

Answer 1

Threats to the validity of quantitative research studies include;

Maturation; Biological or psychological changes occurring within subjects may account in part or in total for the effects discerned in the study.

Testing; as changes in test scores occur because of repeated testing and not because of the intervention.

Instrumentation as results of the study is because of a change in the instrument calibration.

Regression threat occurs when subjects have been selected on the basis of extreme scores.

Differential Selection occurs as subjects cannot be randomly assigned to treatment groups, due to groups being unequal in relevant variables before treatment intervention.