Signal Detection in Fixed-Ratio Schedules

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Science  23 Apr 1965:
Vol. 148, Issue 3669, pp. 526-527
DOI: 10.1126/science.148.3669.526


A psychophysical choice technique can be used to measure discrimination of the stimuli produced by two fixed-ratio schedules. As the difference between the two ratios is reduced, the number of errors in discrimination increases. The analysis differentiates between discrimination and response bias, which are frequently confused in animal psychophysics.