Mobile Information Systems

Research Article

Towards the Design of Context-Aware Adaptive User Interfaces to Minimize Drivers’ Distractions

Table 4

Descriptive statistics.
Usability parametersVariables (questions)ScalesFrequencyPercentages
AttitudeATTD1, ATTD2, ATTD3, ATTD4Definitely2931.18
Very probably5660.82
Probably077.53
Possibly011.08
Definitely not——
Intention to useITU1, ITU2, ITU3, ITU4Definitely2729.03
Very probably4649.46
Probably1920.43
Possibly011.08
Definitely not——
Perceived usefulnessPDU1, PDU2, PDU3, PDU4, PDU5, PDU6Strongly agree1212.90
Agree6569.89
Probably1617.20
Possibly——
Strongly disagree——
Understandability and learnabilityUAL1, UAL2Much higher4043.01
Higher4548.39
About the same088.60
Lower——
Much lower——
OperabilityOPT1, OPT2, OPT3, OPT4, OPT5, OPT6, OPT7, OPT8, OPT9, OPT10, OPT11Very satisfied066.45
Satisfied7580.65
Neither1212.90
Dissatisfied——
Very dissatisfied——
Ease of useEOU1, EOU2, EOU3, EOU4, EOU5, EOU6, EOU7, EOU8Strongly agree099.68
Agree7277.42
Probably1212.90
Possibly——
Strongly disagree——
System usability scale (SUS)SUS1, SUS2, SUS3, SUS4, SUS5, SUS6, SUS7Strongly agree0718.28
Agree6974.19
Probably1718.28
Possibly——
Strongly disagree——
Minimal memory loadMML1, MML2, MML3, MML4, MML5, MML6, MML7, MML8Agree strongly077.53
Agree moderately8288.17
Agree slightly044.30
Disagree moderately——
Disagree strongly——
Minimal visual interactionMVI1, MVI2, MVI3, MVI4Agree strongly1313.98
Agree moderately5963.44
Agree slightly2122.58
Disagree moderately——
Disagree strongly——
Minimal physical interactionMPI1, MPI2Agree strongly1819.35
Agree moderately4548.39
Agree slightly2830.11
Disagree moderately022.15
Disagree strongly——
User satisfactionUS1, US2, US3, US4, US5Extremely satisfied2021.51
Very satisfied6266.67
Moderately satisfied1111.83
Slightly satisfied——
Not at all satisfied——