Author Question: Using your knowledge of threats to internal validity, which research design will be most ... (Read 47 times)

nevelica · **on:** Jul 8, 2018

Using your knowledge of threats to internal validity, which research design will be most susceptible?

A) Pretest-Posttest
B) Cross-over
C) Correlational
D) Factorial

Question 2

What study design flaw may lead to a failure to achieve statistical significance?

A) Variables precisely defined
B) Adequate exposure to the intervention
C) Small sample size
D) Cross-sectional data collection

macmac · **Reply #1 on:** Jul 8, 2018

Answer to Question 1

C
Feedback:
A correctional research design is most susceptible to threats to internal validity. With quasi-experiments and correlational studies, there are competing explanations, which are sometimes called threats to internal validity.

Answer to Question 2

C
Feedback:
With small samples, statistical power tends to be low, and the analyses may fail to show that the independent variable and the outcome are relatedeven when they are. Variables that are precisely defined and have adequate exposure to the intervention and cross-sectional data collection lead to statistical significance.