A Researcher Designed an Experiment in Which Four Independent Variables

question 32

Multiple Choice

A researcher designed an experiment in which four independent variables were manipulated. Which of the following is most likely to describe his design?

• A)1 × 4
• B)2 × 4
• C)4 × 4
• D)2 × 2 × 4 × 3

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Definitions:

Serotonin Levels

refer to the concentration of serotonin, a key neurotransmitter in the human body that affects mood, emotion, and sleep.

Serotonin

A neurotransmitter involved in numerous bodily functions, including mood regulation, appetite, and sleep.

Antidepressant Drugs

Drugs used to treat depression; also increasingly prescribed for anxiety. Different types work by altering the availability of various neurotransmitters.

Hippocampus

is a brain structure integral to memory formation and spatial navigation.