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Alan J. Happ

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Publication statistics

Pub. period:1987-1994
Pub. count:5
Number of co-authors:3

Co-authors

Number of publications with 3 favourite co-authors:

Sharon L. Stanners:2
Mary J. LaLomia:1
Karen C. Cohen:1

Productive colleagues

Alan J. Happ's 3 most productive colleagues in number of publications:

Mary J. LaLomia:10
Sharon L. Stanners:2
Karen C. Cohen:2

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May 27

13th Intl. Conf. on New Interfaces for Musical Expression

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May 24

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Alan J. Happ

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Publications by Alan J. Happ (bibliography)

1994

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Happ, Alan J. (1994): Usability Foresight: Strategic Usability Planning. In ACM SIGCHI Bulletin, 26 (1) pp. 17-21.

1991

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Happ, Alan J. and Stanners, Sharon L. (1991): An Evaluation of Alternative Designs for Variable Selection Lists. In ACM SIGCHI Bulletin, 23 (4) p. 39.

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Happ, Alan J. and Stanners, Sharon L. (1991): Effect of Hypertext Cue Presentation on Knowledge Representation. In: Proceedings of the Human Factors Society 35th Annual Meeting 1991. pp. 305-309.

“One important element of hypertext design is the presentation of the hypertext cue. This study compared learning relationships about animals in an oriental zodiac using one of two online, hypertext presentation styles and printed text. In one hypertext condition, the cues were embedded in the text; in the other condition, the cues were located in the margins. A control condition contained unrelated study materials. The database on the zodiac consisted of a multiple hierarchy. Two measures of learning were used. Reaction time before and after a brief study period was used to assess knowledge about the relationships among animals in the zodiac. Participants' ability to correctly reproduce the underlying model of the zodiac in the database using a card sorting task was used to assess the degree to which they learned the underlying model. Analysis of variance revealed a significant interaction between learning (pre- and post-study period) and presentation condition (hypertext embedded in text, hypertext in the margin, printed text, unrelated text material). An analysis of the results of the card sort data revealed that participants more accurately reproduced the underlying model after study with hypertext, regardless of the location of the cue, than with text. The results are discussed with respect to the design of hypertext information and the need for future research.”

1989

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Happ, Alan J. and Cohen, Karen C. (1989): Creating Consistency in the User Interface: Opinions and Procedures of Software Development Experts. In ACM SIGCHI Bulletin, 21 (1) pp. 85-87.

1987

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LaLomia, Mary J. and Happ, Alan J. (1987): The Effective Use of Color for Text on the IBM 5153 Color Display. In: Proceedings of the Human Factors Society 31st Annual Meeting 1987. pp. 1091-1095.

“The goal of this research was to provide a set of criteria for the effective use of color on the IBM 5153 Color Display. Available guidelines provide direction but not the detail required for application programmers. This study examined character legibility and subjective preference for color combinations in text in an application program. The effectiveness of color combinations was defined as a joint function of response time and subjective rating. The graphs of foreground/background color relationships show the observers' performance as a function of their preference. The results indicated the flexibility of black or blue backgrounds. The findings are discussed with respect to principles of human perception.”

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