Bob Conducts a Three-Way Totally Between-Groups Study

question 154

Multiple Choice

Bob conducts a three-way totally between-groups study. Which of the following explanations of his study is correct?

• A) There are two independent variables, each with three levels, and random assignment was used for all independent variables.
• B) There are three independent variables, and random assignment was used for all independent variables.
• C) There are three independent variables, with two of them using random assignment and one of them using correlated assignment.
• D) There are two independent variables, each with three levels, with two of them using random assignment and one of them using correlated assignment.

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Definitions:

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An important neurotransmitter in the brain involved in learning and memory, acting as a key excitatory molecule in the central nervous system.