PSSUQPost Study System Usability Questionnaire
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Another group of questions in the PSSUQ included three factors: usability of the TDS and SnP (ease of use and effectiveness), satisfaction with the TDS, and comparison between TDS and the current AT, which accounted for 87.
As part of the PSSUQ, participants were asked about (1) the problems they had with the current TDS prototype over the study period and (2) their opinions about how to improve the system.
Abbreviations: AQ = ASQ question, ASQ = after-scenario questionnaire, AT = assistive technology, BCI = brain-computer interface, C = cervical, eTDS = external TDS, iTDS = intraoral TDS, NU = Northwestern University, PC = personal computer, PQ = PSSUQ question, PSSUQ = poststudy system usability questionnaire, PWC = powered wheelchair, SCA = Shepherd Center in Atlanta, SCI = spinal cord injury, SnP = sip-and-puff, TDS = Tongue Drive System.