Which One of the Following Independent Variables Represents a Categorical

question 57

Multiple Choice

Which one of the following independent variables represents a categorical variable?

• A) dosage level of a drug to be administered
• B) amount of positive or negative reinforcement
• C) distance from sound source in a test of auditory acuity
• D) rote versus conceptual method of teaching

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Definitions:

Absolute Refractory Period

A period immediately following the stimulation during which a nerve or muscle is unresponsive to further stimulation.

Second Messenger System

A method of cellular signaling where the signal from a first messenger is transferred to a secondary molecule inside the cell to elicit a physiological change.

Protein Kinase

An enzyme that modifies other proteins by chemically adding phosphate groups to them, thereby altering their function.

G Protein

A group of proteins functioning as cellular molecular switches, responsible for conveying signals from external stimuli to the inside of the cell.