Abby Is Conducting an Observational Study of Walking Speed by College

question 82

Multiple Choice

Abby is conducting an observational study of walking speed by college students between classes. She observes behavior at two time periods in the morning, two in the afternoon, and two in the evening. Abby has engaged in ___________ sampling.

• A) situation
• B) time
• C) qualitative
• D) participant

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Definitions:

Psychophysics Term

Relates to the study of the relationship between physical stimuli and the sensations and perceptions they produce.

Absolute Difference

A measure of the total amount of difference between two quantities or numbers.

Weber Fraction

A principle in psychophysics quantifying the perception of change in a given stimulus relative to its initial level, often used in detecting differences in intensity.

Grapheme-colour Synesthesia

A form of synesthesia in which an individual's perception of numbers and letters is automatically and involuntarily associated with colors.