Anomaly Detection to Increase Commuter Safety for Individuals with Cognitive Impairments

  • Yao-Jen Chang
  • Frank Tsen-Yung Wang
  • Shu-Fang Chen
  • Tien-Shyan Ma
Original Article


This study assesses the possibility of using handheld devices to increase commuter safety for adults with cognitive impairments. The system uses a commercial off-the-shelf PDA (Personal Digital Assistant) with built-in GPS (Global Positioning System), enabling individuals to respond to unexpected situations without staff intervention. This study was performed according to an ABAB reversal design, in which A represented the baseline and B represented intervention phases. The data show that participants’ awareness of anomalies significantly increased in target response, thus improving trip safety during intervention phases. Practical and developmental implications of the findings are discussed.


Anomaly detection Assistive technology Cognitive impairments 


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Yao-Jen Chang
    • 1
  • Frank Tsen-Yung Wang
    • 2
  • Shu-Fang Chen
    • 3
  • Tien-Shyan Ma
    • 4
  1. 1.Department of Electronic EngineeringChung Yuan Christian UniversityChung LiTaiwan
  2. 2.Graduate Institute of Social WorkNational Cheng Chi UniversityTaipeiTaiwan
  3. 3.Graduate Institute of Rehabilitation CounselingNational Taiwan Normal UniversityTaipeiTaiwan
  4. 4.Association of Employment Rights for the Persons with DisabilitiesTaipeiTaiwan

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