In a test of the effects of sleep deprivation on problem-solving skills,research participants are allowed to sleep either 4 or 8 hours on each of three consecutive nights.This research is an example of
A) naturalistic observation.
B) survey research.
C) a case study.
D) an experiment.

Question

Quizplus · Accepted Answer

This is an experiment because the researchers are manipulating the independent variable (amount of sleep) and measuring the effect on the dependent variable (problem-solving skills) while controlling for other variables.

In a Test of the Effects of Sleep Deprivation on Problem-Solving