An experimental study is conducted examining the relationship between drinking caffeine and reaction time. Participants given caffeine by the experimenters in different amounts, and then are assessed on various tests of reaction time. In this study, the amount of caffeine that a participant drinks is the ____.
a. control variable
b. dependent variable
c. random variable
d. independent variable
Answer: d. independent variable
You might also like to view...
According to Erikson, the major goal of adolescent development is___________.
A. learning to deal with new sexuality B. learning to think abstractly C. distinguishing oneself from younger siblings D. developing a sense of identity
According to the _____ effects model, a child's behavior is determined exclusively by the actions of their parent
Fill in the blank(s) with correct word
The receptor cells in the retina that enable us to distinguish different wavelengths of light are called:
a. cones b. rods c. bipolar cells d. ganglion cells
Stewie has developed strong feelings for his mother and views his father as a rival for her attention. However, he is afraid that his father will find out and interfere with these plans. Stewie is clearly immersed in the __________ stage
A) anal B) genital C) oral D) phallic