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.
-If the IQ scores in Group A had been significantly higher than those in Group B, we may conclude that
A) the magnesium pemoline probably caused an increase in IQ scores
B) the magnesium pemoline probably caused a decrease in IQ scores
C) cause and effect statements cannot be inferred from this study
D) none of these

Question

Quizplus · Accepted Answer

If the IQ scores in Group A are significantly higher than those in Group B, it suggests that the magnesium pemoline may have had an effect on the IQ scores. However, it is important to note that this study does not prove causation and further research would be needed to establish a causal relationship.

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