The primary way of determining whether a threat to the internal validity of the nonequivalent comparison-group design is plausible is to:
A) Look at the pattern produced by the results of the experiment and decide if the threat is plausible
B) Conduct an analysis of variance of the data
C) Determine if the experimental design included a control group
D) Consult with other researchers in the field

Question

Quizplus · Accepted Answer

Examining the pattern of results helps identify if differences between groups could be due to threats like selection bias, rather than the treatment effect.

The Primary Way of Determining Whether a Threat to the Internal