In an Investigation of the Effects of Caffeine on Concentration

question 34

Multiple Choice

In an investigation of the effects of caffeine on concentration, half the participants were given regular colas that contained caffeine and half were given decaffeinated colas. In this study, the decaffeinated colas are being used as ​

• A)a confounding variable.
• B)a random factor. ​
• C)the dependent variable. ​
• D)a placebo. ​

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Definitions:

Double Standard

The application of different sets of principles for similar situations, or to different people in the same situation.

Sexual Behavior

Activities or practices related to the expression of sexuality, which can vary greatly among individuals and cultures.

Committed Relationship

A long-term, romantic relationship where partners are dedicated to each other and share mutual goals and intimacy.

Desirable

Having qualities that are pleasing or sought after by others; often refers to attributes that make something or someone attractive or enviable.