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Age-related differences in processing visual device and task characteristics when using technical devices.

M Oehl1, C Sutter2

  • 1Leuphana University of Lüneburg, Institute of Experimental Industrial Psychology, Wilschenbrucher Weg 84a, 21335 Lüneburg, Germany.

Applied Ergonomics
|February 17, 2015
PubMed
Summary
This summary is machine-generated.

As people age, visual feedback is crucial for controlling actions, impacting tool use. This study found that aiming duration, a psychomotor skill, predicts age-related differences in pointing tasks on touchscreens.

Keywords:
AgeDisplay sizeTool use

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Area of Science:

  • Human-Computer Interaction
  • Cognitive Psychology
  • Human Factors Engineering

Background:

  • Visual feedback's role in action control increases with age.
  • Age-related changes may affect how individuals interact with visual displays and tools.

Purpose of the Study:

  • To investigate age-related differences in processing visual information during tool use.
  • To examine the impact of display size (task-irrelevant) and task difficulty (task-relevant) on pointing performance in young and middle-aged adults.

Main Methods:

  • Participants aged 20-35 (young) and 36-64 (middle-aged) performed pointing tasks on a touchscreen.
  • Variable display sizes (4-12 inches) and task difficulties (1.8-5 bits) were used.
  • Pointing performance and aiming duration were measured.

Main Results:

  • Both display size and age significantly affected pointing performance.
  • Aiming duration moderated the effects of display size and age on performance.
  • Task difficulty had a greater impact on pointing duration for middle-aged adults compared to young adults, with aiming duration explaining the variance.

Conclusions:

  • The decline in aiming duration, a fine psychomotor ability, begins in middle adulthood and predicts age-related differences in pointing tasks.
  • Results advocate for user-specific design considerations for small touch-interface devices, particularly for older adult users.