When Using Likert Scaling Researchers Often Combine Survey Items Resulting

question 39

Multiple Choice

When using Likert scaling researchers often combine survey items resulting in a single value to represent the construct being measured. In doing so the researcher must be confident that the survey is internally reliable. As a measure of internal reliability they should report

• A) Cohen's d.
• B) Cronbach's alpha.
• C) ANCOVA.
• D) measures of predictive validity.

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Definitions:

Lurking Variables

Variables that are not directly studied within an experiment but can affect the outcome of the study or the relationship between studied variables.

Confounding Variables

Variables that the researcher failed to control, or eliminate, damaging the internal validity of an experiment by potentially influencing the dependent variable.

Random Assignment

A method used in experiments to assign participants or items to different groups in a way that each has an equal chance of being in any group.

Placebo

A substance with no therapeutic effect, used as a control in testing new drugs, or to influence a participant's belief in the efficacy of a treatment.