Isoresponse time regions for the evaluation of visual search performance in ergonomic interface models

Dohyung Kee, Eui S. Jung, Min K. Chung

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Computer-aided ergonomic evaluation models often provide a limited function of visual performance, usually in the form of visibility tests at any given location. It is, however, of great importance to complete a visual task in a predetermined time successfully or to predict the time to complete the task, e.g., a task of high-level control such as aircraft flight operations. In this study, isoresponse time regions which have an effect on visual performance in real-life situations are presented as an effort to complement aforementioned shortcomings of ergonomic interface models. A multiple regression was used to provide equal response time regions, being asymmetrical in shape. In addition, the fuzzy linear regression (FLR) model was introduced to provide a fuzzy set from which a decision-maker might select appropriately. It provided similar fitted values with having the advantage of utilizing the interval of those fitted values over the conventional regression model. The results can be applied effectively to the design of an interface for diverse visual tasks in real situations.

Original languageEnglish
Pages (from-to)243-252
Number of pages10
Issue number3
Publication statusPublished - 1992 Mar
Externally publishedYes


  • Ergonomic interface models
  • Fuzzy linear regression
  • Isoresponse time region
  • Visual search performance

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Physical Therapy, Sports Therapy and Rehabilitation


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