Kip Enjoys Playing with Sparklers on the 4^th of July

question 256

Multiple Choice

Kip enjoys playing with sparklers on the 4^th of July. He always loves watching a friend run with a sparkler and the momentary trail of light that seems to be left behind. Which aspect of our visual system best explains this trail of light?

• A) lateral inhibition
• B) microsaccades of the eyes
• C) persistence of vision
• D) achromatopsia

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Definitions:

Reliability

Reliability in research refers to the consistency or repeatability of a measure or test; a reliable measure produces similar results under consistent conditions.

Measurement

The process of finding out whether people (or media content) have more or less of an attribute we are interested in. It is done by assigning numbers to the phenomena we are interested in.

Face Validity

The extent to which a test or procedure appears effective in terms of its stated aims to those taking or observing it, without considering underlying mechanisms.

Semantic Differential Scales

A type of survey question where respondents rate a concept on a scale between two bipolar adjectives, used to measure attitudes or feelings.