The present study measured the effect of varying display duration upon the difference in discriminability, d', for separate versus mixed presentation of multiple flaws. Presentation interval was varied in three steps, from 1 to 4 s. Results demonstrate that the decline in d', in the mixed as compared with the separate presentation condition, represents an enforced speed-accuracy trade-off. Over the range of display intervals studied, the trade-off is notably linear. There were no significant differences in criterion location as a result of different experimental conditions.
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