Dr. wongo is doing a psychophysical experiment to determine the smallest concentration of coffee that we can detect by olfaction. in the experiment, he presents some coffee concentrations that are clearly detectable, others that cannot be detected, and some that are just detectable. these presentations are randomized. dr. wongo can be said to be using the method of: a. adjudication b. constant stimuli c. inverse thresholds d. limits

B. the answer is: Constant stimuli

According to the method of constant stimuli, researchers will make the subject to experience a fixed set of stimulis repeatedly but being done in random order.

The purpose of such a method is to find out whether there is certain threshold when responses made by the subjects could be ceased to exist. IN the experiment above, the different coffees with various concentration is what considered as the fixed set of stimulis.

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