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How age affects the speed of perception of computer icons

How age affects the speed of perception of computer icons. 學生：董瑩蟬. Purpose. This paper want to investigate the visual search task performance on the different age group. It is contrast between the different icon size and spacing search time. Reference. Normal aging of visual system.

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How age affects the speed of perception of computer icons

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  1. How age affects the speed of perception of computer icons 學生：董瑩蟬

  2. Purpose • This paper want to investigate the visual search task performance on the different age group. It is contrast between the different icon size and spacing search time .

  3. Reference • Normal aging of visual system

  4. Reference • Visual search

  5. Method 1.Subject • 51 person (8M,43F),Five group • No eye-disease and visual impaired • Have use computer experience 2.Equipment • Precision vision • Vistech • PC Computer • SGI 1600SW LCD

  6. Method 3. Independent variables • Icon sizes • Spacing 4.Dependent variables • Search time

  7. Method 5.Process • Measure visual acuity and contrast sensitivity. • Two trains. • Visual search task. • When fined the different icon Click the “icon”, no different or no fined click “no”. • When subjects find two errors, this task will finish. 500ms 800ms

  8. Results

  9. Results

  10. Results

  11. Results

  12. Results • Mean search time for normal size and normal vision for age group

  13. Results

  14. Discussion

  15. Discussion • The older has poor attention resources. (P.A. Reuter-Lorenz 2002) • The older adults has less visual field. (G. Haegerstrom-Portony et al.,1999) • The useful field of view reduce with aging. (J. Cerella,1985) • The visual field become narrower with aging. (J. Cerella,1985; G. Haegerstrom-Portony et al.,1999)

  16. Conclusions • The search time declined with increase age. • The interfere increase with the subnormal vision person, when the small icon and the far spacing. • People with subnormal vision has no difference with normal person, when the large icon. • The interface design degree about 1 and the spaced must be next to each other.

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