Biased Assignment

question 6

Multiple Choice

Biased assignment

• A)increases error variance.
• B)is a particular problem in within-subjects designs.
• C)eliminates confounding.
• D)undermines internal validity.

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Definitions:

Observer Drift

The tendency of an observer who is rating subjects in an experiment to change criteria gradually and involuntarily, thus making the data unreliable.

Tactile Hallucinations

False perceptions of touch or bodily sensations, often experienced without external stimuli, commonly associated with certain mental disorders.

Neuropsychological Battery

A comprehensive assessment using a series of tests to measure cognitive function and brain behavior relationships, often following brain injury or neurological disease.

Diagnosis

The identification of the nature of an illness or other problem by examination of the symptoms.