A Psychologist Is Interested in Whether Hypnosis Affects Brain Dominance

question 29

Multiple Choice

A psychologist is interested in whether hypnosis affects brain dominance. Twelve college students from the freshmen class are randomly sampled for an experiment. The experiment has two conditions which are given on different days. In condition 1, the students are hypnotized and then given a test which measures the relative dominance of the right and left hemispheres. The higher the score, the more dominant is the right hemisphere. In condition 2, the same students are given the test again, only this time they are not hypnotized but are in their normal state of consciousness. The following scores are obtained. The obtained probability = _________.

• A) 0.0161
• B) 0.0384
• C) 0.0192
• D) 0.0322

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Definitions:

Ecological Validity

Ecological validity concerns how well the findings of a research study can be generalized to real-world settings.

Evolutionary Validity

The extent to which findings and theories in psychology are consistent with evolutionary principles and the history of human development.

Within-subjects Design

An experimental design in which the same subjects are exposed to all conditions or treatments, minimizing variability among participants.