An educational psychologist seeks to determine how studying duration is related to standardized test scores.She realizes that IQ is a possible third variable that could cause both studying and test score.As such,she studies only students who have approximately the same IQ.What technique is the psychologist using to attempt to control for this third variable?
A)matched samples
B)matched pairs
C)matched supervisors
D)double-blind observation

Question

Quizplus · Accepted Answer

By selecting students who have approximately the same IQ, the educational psychologist is using matched samples to control for the potential third variable of IQ. This technique ensures that the groups being compared are similar on this variable, reducing the likelihood that differences in IQ are responsible for any observed differences in studying duration or test scores. Matched pairs involve directly matching participants on a specific variable, while matched supervisors and double-blind observation are not relevant for controlling for a third variable.

An Educational Psychologist Seeks to Determine How Studying Duration Is