Often, We Do Not Know at the Start of an Experiment

question 109

Multiple Choice

Often, we do not know at the start of an experiment what extraneous variables could affect our results. The best means of controlling for unknown sources of extraneous variables is:

• A) Random selection
• B) Random assignment
• C) Sequencing
• D) Analysis of covariance

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Definitions:

Contraceptives

Methods or devices used to prevent pregnancy.

Sexually Active

Individuals who engage in sexual activities, implying various forms of sexual intercourse.

Sexual Identity

The personal sense of one's own gender and sexual orientation, including how individuals perceive themselves and what they call themselves in terms of being attracted to other genders.

Evolving Process

A process characterized by gradual changes and developments over time.