Psychological refractoriness with varying differences between tasks.

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Abstract
CONDUCTED 2 EXPERIMENTS ON PSYCHOLOGICAL REFRACTORINESS (PR) EACH WITH 8 ADULT HUMAN SS. PR WAS ESTIMATED BY THE INCREASE IN MEAN RT TO THE 2ND OF 2 CHOICE TASKS WHEN THE INTERSIGNAL INTERVAL WAS REDUCED FROM 900-100 MSEC. PR WAS GREATER FOR A 2ND TASK OPPOSITE IN DIRECTION TO THE 1ST THAN FOR THE PERPENDICULAR ONE. THIS HELD WHETHER OR NOT THE PERPENDICULAR TASK REQUIRED A REVISION OF SIGNAL-RESPONSE CODING. CONCLUSIONS WERE THAT PR IS (1) A FUNCTION OF THE DIFFERENCES BETWEEN THE 2 TASKS, (2) DEPENDENT ON ANTAGONISM BETWEEN COMMON ELEMENTS OF THE 2 TASKS RATHER THAN ON UNRELATEDNESS OR ABSENCE OF COMMON ELEMENTS, AND (3) CAPABLE OF BEING ANALYZED INTO COMPONENTS REPRESENTING SIGNAL AND RESPONSE ANTAGONISM. IT WAS ALSO FOUND THAT RESPONSE ANTAGONISM INCREASED RT1, SHOWING THAT THE 1ST RESPONSE MAY BE AFFECTED BY THE 2ND SIGNAL, CONTRARY TO THE STORAGE HYPOTHESIS OF PR. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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