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. 
Definitions:
Hindsight Bias
The tendency to believe, after an event has occurred, that one would have predicted or expected the outcome, known also as the "I-knew-it-all-along" phenomenon.
Distributed Practice
A learning strategy that involves spreading out study sessions over time, rather than engaging in one long session.
Multiple Examples
The use of several instances or scenarios to illustrate a concept or to teach a lesson, enhancing understanding.
Different Sources
Refers to the diverse origins or types of information, data, or evidence, highlighting the variety in perspectives or methods.
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