May 23

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Larry Hodges

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Publications by Larry Hodges (bibliography)

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2006
 
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Zanbaka, Catherine, Goolkasian, Paula and Hodges, Larry (2006): Can a virtual cat persuade you?: the role of gender and realism in speaker persuasiveness. In: Proceedings of ACM CHI 2006 Conference on Human Factors in Computing Systems 2006. pp. 1153-1162.

This study examines the roles of gender and visual realism in the persuasiveness of speakers. Participants were presented with a persuasive passage delivered by a male or female person, virtual human, or virtual character. They were then assessed on attitude change and their ratings of the argument, message, and speaker. The results indicated that the virtual speakers were as effective at changing attitudes as real people. Male participants were more persuaded when the speaker was female than when the speaker was male, whereas female participants were more persuaded when the speaker was male than when the speaker was female. Cross gender interactions occurred across all conditions, suggesting that some of the gender stereotypes that occur with people may carry over to interaction with virtual characters. Ratings of the perceptions of the speaker were more favorable for virtual speakers than for human speakers. We discuss the application of these findings in the design of persuasive human computer interfaces.

© All rights reserved Zanbaka et al. and/or ACM Press

1997
 
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Green, Mark and Hodges, Larry (1997): VRAIS 97 Highlights the Maturing of a Discipline. In IEEE Computer Graphics and Applications, 17 (6) pp. 21-22.

1994
 
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Surdick, R. Troy, Davis, Elizabeth T., King, Robert A., Corso, Gregory M., Shapiro, Alexander, Hodges, Larry and Elliot, Kelly (1994): Relevant Cues for the Visual Perception of Depth: Is Where You See It Where It Is?. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 1305-1309.

We tested seven visual depth cues (relative brightness, relative size, relative height, linear perspective, foreshortening, texture gradient, and stereopsis) at viewing distances of one and two meters to answer two questions. First, which cues provide effective depth information (i.e., only a small change in the depth cue results in a noticeable change in perceived depth). Second, how does the effectiveness of these depth cues change as a function of the viewing distance? Six college-aged subjects were tested with each depth cue at both viewing distances. They were tested using a method of constant stimuli procedure and a modified Wheatstone stereoscopic display. Accuracies for perceptual match settings for all cues were very high (mean constant errors were near zero), and no cues were significantly more or less accurate than any others. Effectiveness of the perspective cues (linear perspective, foreshortening, and texture gradient) was superior to that of other depth cues, while effectiveness of relative brightness was vastly inferior. Moreover, stereopsis, among the more effective cues at one meter, was significantly less so at two meters. These results have theoretical implications for models of human spatial perception and practical implications for the design and development of 3D virtual environments.

© All rights reserved Surdick et al. and/or Human Factors Society

 
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07 Nov 2012: Added
23 Feb 2010: Modified
26 Jun 2007: Added
19 Jun 2007: Added

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URL: http://www.interaction-design.org/references/authors/larry_hodges.html
May 23

Knowledge is commonly socially constructed, through collaborative efforts towards shared objectives or by dialogues and challenges brought about by different persons' perspectives.

-- G. Salomon (in "Distributed Cognitions: Psychological and Educational Considerations")

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Help us help you!