Cognitive Abilities Predict Safety Performance: A Study Examining High-Speed Railway Dispatchers

Table 2

Descriptive statistics of all variables (n = 118).

Variable	Mean	SD	Min	Max
Control variables
Age	36.25	3.96	28	47
Dispatching experience	6.04	1.95	1	10
Cognitive ability variables
LR score	37.36	8.46	21	58
ACC of MOT	0.60	0.14	0.30	0.84
RT of MOT (ms)	1213.68	296.29	593.69	1995.92
ACC of WM	0.71	0.17	0.47	1.00
RT of WM (ms)	696.81	199.14	408.51	998.52
RT of TS (ms)	1286.21	297.79	695.69	2125.21
RT of CF (ms)	43013.18	3521.36	37427.01	51235.75
Safety performance variables
SE score	82.62	12.13	55.50	110.00
Train delay time (minute)	227.42	52.55	123.00	317.00

LR = logical reasoning; MOT =  multiobject tracking; WM = working memory; TS = task switching; CF = cognitive flexible; SE = safety evaluation.