In Experimental Psychology, the Proportion of the Top Third of the Class

question 45

Multiple Choice

In experimental psychology, the proportion of the top third of the class that correctly answered the last question of the final was .93 while .89 of the bottom third of the class answered correctly. The professor should decide not to include this question in the next final because the discrimination index indicates

• A)negative discrimination.
• B)chance level performance.
• C)that students were incorrectly prepared.
• D)that the item does not discriminate well.

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Definitions:

Taste Cells

Specialized sensory cells located on the taste buds of the tongue, responsible for perceiving different flavors such as sweet, salty, bitter, and sour.

Gustav Fechner

A German scientist who founded psychophysics and proposed the Fechner's law, relating physical stimuli to the sensation of their intensity.

Correct Rejection

In signal detection theory, the decision to correctly identify the absence of a signal or stimulus.

Miss

To fail to hit, reach, catch, or otherwise make contact with something; can also refer to feeling sadness from the absence or loss of someone or something.