Exhibit 2-6: A researcher carried out an experiment with her freshman psychology students to answer the question: "Does college students' rate of learning a series of cognitive tasks differ in regard to gender and type of motivation (intrinsic or extrinsic)?"
-Refer to Exhibit 2-6.What is the manipulated independent variable?
A) gender
B) type of motivation
C) college students
D) rate of learning task
E) freshman psychology students

Question

Quizplus · Accepted Answer

The manipulated independent variable, also known as the experimental variable, is the variable that the researcher intentionally changes or manipulates in order to observe its effect on the dependent variable. In this experiment, the type of motivation (intrinsic or extrinsic) is the independent variable that the researcher manipulated. Gender is a non-manipulated independent variable and the other options (college students, rate of learning task, and freshman psychology students) are not independent variables at all.

Exhibit 2-6: a Researcher Carried Out an Experiment with Her