Akilah and her team want to develop a scale that rates the bitterness of chocolate. Bitterness is tied to the concentration of cocoa in the chocolate. Explain the test they should run in order to develop the scale. Be sure to explain both the physical and psychological dimensions of the test.
What will be an ideal response?
Akilah and her team could use a psychophysical scale to measure test subjects' experience of bitterness as they taste different concentrations of cocoa. The concentration of cocoa would be the physical dimension and the perception of bitterness would be the psychological dimension. The team would need to give tasters chocolate with a known concentration of cocoa, then test how much more concentrated the cocoa would need to be before the tasters noticed a difference.
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