A researcher makes some attempts to equate the characteristics of two groups of participants. She conducts her research study in a laboratory setting where extraneous variables are eliminated. The two ratings of internal validity of the study, equivalence of participant characteristics and control of extraneous variables, would be:
A) Medium and high
B) High and medium
C) Low and medium
D) Low and high

Question

Quizplus · Accepted Answer

The researcher's efforts to equate participant characteristics suggest a medium level of internal validity for this aspect, as perfect equivalence is challenging to achieve. The control of extraneous variables in a laboratory setting indicates a high level of internal validity for this aspect, as a controlled environment allows for better management of potential confounding variables.

A Researcher Makes Some Attempts to Equate the Characteristics of Two