A Child Swings to and Fro on a Playground Swing

question 27

Multiple Choice

A child swings to and fro on a playground swing.If the child stands rather than sits,the time for a to-and-fro swing is

• A)lengthened.
• B)shortened.
• C)unchanged.

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Definitions:

Sensory Adaptation

A decrease in sensitivity to a constant level of stimulation.

Absolute Threshold

The smallest amount of physical stimulation required to detect a sensory input half of the time it is present.

Signal Detection

A theory and method for quantifying the ability to differentiate between information-bearing patterns and random patterns that distract from the information.

Optic Nerve

A cranial nerve that transmits visual information from the retina to the brain, facilitating the sense of sight.