In a test of the effects of sleep deprivation on problem-solving skills,research participants are allowed to sleep either four or eight 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) to see if it has an effect on the dependent variable (problem-solving skills). They are also using controlled conditions by allowing participants to sleep the same amount each night for three consecutive nights.

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