Kayleigh Was Enlisted to Be a Part of a Physiological

question 135

Multiple Choice

Kayleigh was enlisted to be a part of a physiological study for extra credit in her experimental psychology course. She read the informed consent and knew she would be observed as she competed against other participants in various physical challenges. Kayleigh became very nervous and began to doubt her athletic ability, knowing someone was watching her. This is an example of:

• A) perception.
• B) bias.
• C) ecological validity.
• D) reactivity.

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Definitions:

T Value

A statistic calculated in a T-Test that determines the size of the difference relative to the variation in the sample data.

Degrees Of Freedom

Degrees of freedom in statistics refer to the number of values in the calculation of a statistic that are free to vary.

Significance Level

A threshold set by the researcher to determine the point at which the results of a statistical test can be considered to demonstrate a meaningful effect, typically denoted by alpha (α).

Effect Size

A measure of the magnitude of difference between two groups, usually calculated as Cohen’s d.