Tom Conducted a Study That Examined Gender Differences in Ability

Multiple Choice

Tom conducted a study that examined gender differences in ability to learn physics concepts from computer games. In his study he found men learned better
From games than the women. He hadn't, however, controlled for amount of game
Playing or interest in physics. These lack of controls are a flaw in Tom's

A) survey study.
B) causal-comparative study.
C) correlational study.
D) experimental study.