Susan Is Asked to Move Her Hands Randomly and to Report

question 144

Multiple Choice

Susan is asked to move her hands randomly and to report the exact location of a series of dots on a screen as she moves her hands. Interestingly, her reports of the dot location showed that __________.

• A) there was a delay between her movement and her report, showing that she moved before she actually detected she moved her hands
• B) there occurred a brief gap between her moment of decision and the actual movement, with the decision coming first
• C) the report and the movement occurred at the same exact time
• D) she was unable to detect when she moved her hands because she was concentrating on the dots

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Definitions:

Usability Testing

The evaluation process by which users of a product are observed to determine how easy and efficient the product is to use.

Simple Random Sampling

Simple random sampling is a statistical method where every member of a population has an equal chance of being selected to form a sample, ensuring unbiased representation.

Stratified Random Sampling

A sampling method that involves dividing a population into subgroups and randomly selecting samples from each group, ensuring representation.

Sampling Techniques

Methods used in statistics to select individual observations intended to yield some knowledge about a population of concern.