A Local Radio Talk Show Host Asks His Listeners to Call

question 70

Multiple Choice

A local radio talk show host asks his listeners to call in and report how frequently they engage in sexual intercourse. Which of the following BEST describes the validity of this information?

• A) Because a random sample of the audience will call in, this will be valid information.
• B) Because this is considered a demographically balanced sample, the information will be valid.
• C) Because the host is utilizing the experimental method instead of the survey method, the information will not be valid.
• D) Because this sample is not representative of the community, it will not be valid.

Describe the roles of rods and cones in vision, including their distribution in the retina and functional differences.

Identify what part of the electromagnetic spectrum is visible to humans and why.

Explain the difference between sensation and perception in the context of vision.

Understand the factors that contribute to common vision problems, such as nearsightedness and farsightedness.

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Definitions:

Face Validity

The extent to which a test appears to measure what it's supposed to measure, based on subjective judgment.

Content Validity

When the content of a test includes a representative sample of behaviours thought to be related to the construct (that is, the concept or entity) the test is designed to measure.

Representative Sample

A portion of the population that represents the entire group accurately.

Single-subject Design

A research design that focuses on the responses of a single participant to document the effectiveness of an intervention.