A Researcher Has Children Watch 30 Minutes of Violent Television

question 51

Multiple Choice

A researcher has children watch 30 minutes of violent television and then measures their aggressiveness.The researcher concludes that television violence causes aggressiveness.A problem here is that

• A) there is no control group.
• B) the aggression measure is unreliable.
• C) the researcher should have had the children watch at least 60 minutes of violent television.
• D) the measurement tool is not valid.

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Definitions:

Standard Deviation

A quantification of the extent to which a group of values is varied or dispersed.

Comptroller

An officer or official in an organization who oversees financial and accounting matters, including audits, budgeting, and financial planning.

Sampling Distribution

The distribution of a statistic over many repeated samples drawn from the same population.

Standard Deviation

A tool for measuring the degree to which data points are scattered or spread apart.