What is the limitation of cross-sectional studies that show that people with methamphetamine addiction have problems with impulse control, memory, verbal learning, and social cognition compared with healthy individuals?

Question

Quizplus · Accepted Answer

Cross-sectional studies cannot determine whether the deficits in impulse control, memory, verbal learning, and social cognition seen in people with methamphetamine addiction were pre-existing before the addiction or are a result of the drug use. Longitudinal studies that follow individuals before and after addiction or use of the drug are necessary to determine causation.

What Is the Limitation of Cross-Sectional Studies That Show That