Research Article

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

Table 6

Data reliability test (Cronbach’s alpha).

Measurement itemsObservationsSignItem-test correlationItem-rest correlationAverage interitem correlationCronbach’s alpha

ATTD193+0.45020.38830.03170.6630
ATTD293+0.18090.10820.03380.6773
ATTD393+0.24640.17530.03330.6739
ATTD4930.06780.00610.03470.6830
ITU193+0.54220.48680.03100.6577
ITU293+0.28940.21970.03300.6717
ITU393+0.25620.18530.03320.6734
ITU493+0.25980.18900.03320.6732
PDU1930.17530.10250.03380.6776
PDU293+0.06500.00900.03470.6832
PDU393+0.30730.23820.03280.6707
PDU4930.16900.09600.03390.6780
PDU593+0.35260.28550.03250.6683
PDU693+0.48340.42360.03150.6611
UAL193+0.31820.24960.03280.6702
UAL293+0.35040.28320.03250.6684
OPT193+0.21790.14600.03350.6754
OPT293+0.15290.07970.03400.6788
OPT393+0.12170.04820.03430.6803
OPT492+0.29320.22390.03290.6715
OPT592+0.03540.03810.03490.6845
OPT6930.03680.03710.03490.6846
OPT791+0.13710.06390.03410.6794
OPT8930.18840.11580.03370.6770
OPT993+0.45100.38920.03170.6629
OPT10920.13120.05820.03420.6798
OPT11930.15460.08140.03400.6787
EOU193+0.12360.05000.03420.6802
EOU2930.14110.06780.03410.6794
EOU393+0.14260.06930.03410.6793
EOU493+0.23620.16470.03340.6745
EOU593+0.20290.13060.03360.6762
EOU6930.13250.05900.03420.6798
EOU793+0.14840.07510.03410.6790
EOU893+0.25440.18340.03320.6735
SUS193+0.36420.29760.03240.6677
SUS2930.12460.05100.03420.6802
SUS393+0.05750.01640.03470.6835
SUS493+0.24500.17380.03330.6740
SUS5930.10810.03430.03440.6810
SUS693+0.20570.13350.03360.6761
SUS793+0.34980.28250.03250.6685
MML193+0.15210.07880.03400.6788
MML293+0.10690.03320.03440.6811
MML393+0.13090.05740.03420.6799
MML493+0.18660.11390.03380.6771
MML5930.12420.05060.03420.6802
MML6930.04670.02720.03480.6841
MML7930.21350.14140.03360.6757
MML893+0.23160.16000.03340.6747
MVI193+0.34330.27580.03260.6688
MVI293+0.16610.09310.03390.6781
MVI393+0.36590.29930.03240.6676
MVI493+0.30620.23690.03280.6708
MPI193+0.15740.08420.03400.6785
MPI2930.33880.27110.03260.6690
US193+0.30730.23830.03280.6707
US293+0.29480.22530.03290.6714
US393+0.35820.29130.03240.6680
US493+0.13600.06250.03410.6796
US593+0.30660.23740.03280.6708
Test scale0.03350.6788