Consider a 2 X 2 Experiment Design in Which Both

question 28

Multiple Choice

Consider a 2 x 2 experiment design in which both study time and sleep time have been manipulated and learning has been measured. An interaction between study time and sleep time can be interpreted to mean which of the following?

• A) The simple effects of study time are not significant.
• B) The simple effects of study time are different in each level of sleep time.
• C) The main effect of study time is not significant.
• D) The main effect of sleep time is not significant.

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Definitions:

Hindsight Bias

The tendency to believe, after an event has occurred, that one would have predicted or expected the outcome, also known as the "I-knew-it-all-along" effect.

Placebo Effect

The phenomenon by which patients experience a perceived or actual improvement in their condition solely due to their belief in the efficacy of a treatment, regardless of its actual therapeutic value.

Illusory Correlation

The cognitive bias of perceiving a relationship between variables (typically people, events, or behaviors) even when no such relationship exists.

Representative Sample

A subset of a population that accurately reflects the members of the entire population.