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 study described above is an example of
A) experimental research
B) post-facto research
C) correlational research
D) longitudinal research

Question

Quizplus · Accepted Answer

The study is experimental research because it involves manipulating an independent variable (magnesium pemoline) to observe its effects on a dependent variable (IQ test scores) while controlling for other factors. The groups were randomly assigned to the treatment and placebo conditions to ensure that any observed differences in IQ test scores could be attributed to the drug rather than other factors.

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