The text describes a study examining the link between sleeping with a nightlight in infancy and later developing nearsightedness. This study exhibited which type of problem?
A) negative-correlation
B) third-variable
C) causal-relationship
D) direction-of-causation

Question

Quizplus · Accepted Answer

The study exhibits a third-variable problem, as there may be other factors that influence both the use of a nightlight in infancy and the development of nearsightedness later in life.

The Text Describes a Study Examining the Link Between Sleeping