Table 2 Change in post-use minus pre-use (baseline) performance assessment by user group, adjusted for age and gender

Task 1: Reaction time

 1a: Simple reaction time (msec)

-9.86 (-29.85, 10.12)

27.68 (3.86, 51.49)

-3.28 (-23.6, 17.05)

0.03

0.02

0.65

0.05

 1b: Choice reaction time (msec)

-28.15 (-46.79,-9.5)

9.41 (-12.8, 31.62)

-10.49 (-29.45, 8.47)

0.03

0.01

0.19

0.18

 1c: Combined reaction time (msec)

-20.76 (-34.22,-7.3)

17.15 (1.11, 33.18)

-6.75 (-20.44, 6.94)

.001

 < .001

.15

.03

Task 2: Gap acceptance

 2a: Premature starts ratio (number of premature starts divided by total trials)

0.02 (-0.01, 0.04)

-0.02 (-0.05, 0.01)

0 (-0.03, 0.02)

.10

.05

.34

.27

 2b: Total time to complete trials (seconds)

-3.67 (-7.04,-0.29)

-1.30 (-5.18, 2.58)

4.61 (1.24, 7.98)

.001

.37

 < .001

.03

 2c: Success ratio (number of successful trials divided by total trials)

0.01 (-0.04, 0.06)

0.05 (-0.01, 0.11)

0.1 (0.05, 0.15)

.05

.29

.01

.19

Task 3: Memory

 3a: Total number of correctly replicated shapes

0.97 (0, 1.95)

-1.39 (-2.51,-0.27)

0.66 (-0.31, 1.63)

.004

.002

.65

.008

 3b: Total time to complete shapes from memory (seconds)

-10.6 (-15.44,-5.76)

-4.38 (-9.93, 1.18)

-6.72 (-11.56,-1.89)

.20

.19

.30

.50