Based on Her Review of Relevant Scientific Studies, Dr

Multiple Choice

Based on her review of relevant scientific studies, Dr. Tanaka believes that there is a relationship between the frequency of a baby's crying and whether it was nursed at set intervals or on a demand schedule. If this belief were tested by experimentally manipulating feeding schedules, the feeding schedule would be called the __________.

A) independent variable
B) dependent variable
C) extraneous variable
D) control factor