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Author Bangerter, Adrian
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Eye Gaze ♦ Perceptual Accuracy ♦ Affect Accuracy ♦ Distal Pointing Gesture ♦ Detection Accuracy ♦ Pointing Arm ♦ People Detection Accuracy ♦ Vertical Line ♦ Peripheral Target ♦ Horizontal Condition ♦ Eye Gaze Detection ♦ Central One ♦ Indexical Signal ♦ Previous Research ♦ Partial Occlusion
Abstract It has been claimed that the perceptual accuracy with which people compre-hend distal pointing gestures is low. But this claim is at odds with research showing that detection of other indexical signals, e.g., eye gaze, is very ac-curate. We conducted three experiments to assess people’s detection accuracy of targets of distal pointing gestures, using a paradigm adapted from the study of eye gaze. Pairs of people were seated next to each other. One person pointed at targets among 70 points arranged in a horizontal (Experiment 1) or vertical line (Experiment 2). The other person guessed the target. Bias in detection was substantially less than previously shown (approximately 3° in vertical and horizontal conditions), and comparable to levels of accuracy for eye gaze detection. Furthermore, and contrary to previous research, detection accuracy was lower for peripheral targets than for central ones. Experiment 3 replicated Experiments 1 and 2 within one study and further demonstrated that partial occlusion of the pointing arm (from shoulder to elbow) did not adversely affect accuracy.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study