References: AN EXPERIMENT ON THE ASSESSMENT OF BRIGHTNESS UNDER, ‘ FREE-CHOICE ’ AND ‘ FORCED-CHOICE’ CONDITIONS BY A GROUP OF OBSERVERS

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REFERENCES

HOPKINSON , R. G. , 1956 , Light energy and brightness sensation . Nature, Lond , 178 , 1063 – 6 .
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STEVKNS , S. S. , 1956 , The direct estimation ofsonsorv magnitudes-loudness . Amer. J. Psychol ., 69 . 1 – 25
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AN EXPERIMENT ON THE ASSESSMENT OF BRIGHTNESS UNDER, ‘ FREE-CHOICE ’ AND ‘ FORCED-CHOICE’ CONDITIONS BY A GROUP OF OBSERVERS

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AN EXPERIMENT ON THE ASSESSMENT OF BRIGHTNESS UNDER, ‘ FREE-CHOICE ’ AND ‘ FORCED-CHOICE’ CONDITIONS BY A GROUP OF OBSERVERS

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