JUDGMENT OF VOLUME FROM PHOTOGRAPHS OF COMPLEX, IRREGULAR SHAPES
AVIATION SAFETY ENGINEERING AND RESEARCH PHOENIX AZ
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Accuracy of observers judgments of volume re duction varies as a direct function of the amount of information provided by photographs and as an inverse function of the complexity of the stimulus object. Three photographs generally provided the most accurate judgment. Volume re duction judgments of low-complexity i.e., low damage shapes were generally made more accurate ly from groups of photographs having low angular disparity, while those of high complexity were made better at high disparity. Observers judg ments of volume reduction vary with the type of geometric shape rated. Objects with square edges were judged more accurately, overall, than were those with round edges. Objects with symmetrical bases were judged more accurately than were those with unsymmetrical bases. Judgments of volume reduction, under the conditions of the present experiment, yielded a reliability estimate of about .64.
- Military Aircraft Operations