Questions below will be bases on the following study: A researcher wishes to test whether the drug, magnesium pemoline, has any influence on intelligence. Two groups of subjects are randomly selected from the population of Omega University students. Group A is given the magnesium pemoline and then tested on the Stanford-Binet IQ test. Group B is given a placebo and, then, also tested on the Stanford-Binet. Both groups are tested under identical environmental conditions.
-The independent variable in this study is (are) the
A) Stanford-Binet test
B) magnesium pemoline versus the placebo
C) control group
D) IQ scores

Question

Quizplus · Accepted Answer

The independent variable in this study is the administration of magnesium pemoline versus placebo. The researcher is testing whether the drug has any influence on intelligence, therefore, the drug is the independent variable. Group A serves as the experimental group (receiving the independent variable) and Group B serves as the control group (receiving the placebo). The Stanford-Binet test and IQ scores are dependent variables that are measured as outcomes of the study.

Questions Below Will Be Bases on the Following Study: a Researcher