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An assistive-technology intervention for verbose speech after traumatic brain injury: a single case study
Ned L Kirsch1, Michelle Shenton, Erin Spirl
1Division of Rehabilitation Psychology and Neuropsychology, Department of Physical Medicine and Rehabilitation, University of Michigan Health Systems, MedRehab Building, 355 Briarwood Circle, Ann Arbor, MI 48108, USA. nlkirsch@umich.edu
Objective:
To assess an assistive-technology intervention for neurobehavioral change, coordinated with a Web-based data recording system.
Participant:
Male, mid-thirties, with a complex history, having verbose speech subsequent to traumatic brain injury.
Design:
BAB' single-case. INTERVENTION AND MEASURES: The intervention (B and B' trials) was a digital recording of the participant's voice, stating "be brief," delivered at fixed intervals by a personal digital assistant. Utterance start and stop times were monitored with a wireless, Web-enabled device and were recorded in a server-side database.
Results:
Utterance frequency did not change. However, the total utterance time was reduced during B trials, attributable to the reduced frequency of lengthier utterances.
Conclusions:
The target behavior was modified successfully. The participant adopted a specific cue-appropriate strategy. Since a variety of alternative response strategies may be required of a person, given a range of context-specific social practices and community settings, the importance of context-sensitive assistive technology cue repertoires is discussed.
