FOPAC Exam Revision UPDATED Study ACTUAL QUESTIONS AND CORRECT ANSWERS

FOPAC Exam Revision UPDATED Study
ACTUAL QUESTIONS AND CORRECT
ANSWERS
What are the 3 Psychophysical Methods for measuring perception? - CORRECT
ANSWER Method of Adjustment

Method of Limits

Method of Constant Stimuli



Method of Adjustment - CORRECT ANSWER Observer adjusts intensity until they
can barely detect stimulus



Method of Limits - CORRECT ANSWER The experimenter adjusts intensity (Up or
Down) until the observer changes their response.



Method of Constant Stimuli - CORRECT ANSWER Observer views several preset
stimulus intensities (in random order) and judges whether each is perceived or not



Absolute Threshold - CORRECT ANSWER minimum amount of energy needed to
detect a stimulus



Threshold Psychometric Function - CORRECT ANSWER Current idea of threshold as
a continuous function. Participants notice stimulus 50% of the time (50 mark).



Just noticeable difference (JND) - CORRECT ANSWER the minimum change in a
stimulus that can be detected (perceived)



Steven's Power Law - CORRECT ANSWER is a proposed relationship between the
magnitude of a physical stimulus and its perceived intensity or strength.