A cognitive psychologist studies the effects of coconut oil on memory function in elderly people who have been given an early diagnosis of Alzheimer's.
Match each type of variable with its example in this study.
Drag each item on the left to its matching item on the right.
Some participants live alone, and some are married.
independent variable
Subjects' memory is measured using their performance on a 20-question memory test.
dependent variable
Subjects are randomly assigned to eat either 0 teaspoons, 2 teaspoons, or 4 teaspoons of coconut oil a day.
confound