Table 2.

Means and standard deviations in QET and CON groups.

		QET group		CON group
Variable	Pre-test	Post-test	Pre-test	Post-test
d2-R Test of Attention
CP (SS)	84.37 ± 15.43	95.67 ± 12.86	93.56 ± 8.87	98.33 ± 11.28
PRZ (SS)	97.00 ± 15.57	103.33 ± 13.87	98.59 ± 9.57	105.11 ± 9.61
Err% (SS)	86.53 ± 11.41	95.80 ± 14.18	93.74 ± 9.39	95.19 ± 12.61
Reaction Test of Alertness (RTA)
RT-ton (T)	39.43 ± 6.80	37.27 ± 6.52	41.70 ± 8.06	39.52 ± 7.72
CV RT-ton(%)	15.57 ± 4.46	16.71 ± 4.85	15.54 ± 4.37	15.73 ± 4.20
CorrR-ton (n)	26.60 ± 1.22	26.07 ± 1.86	26.56 ± 1.89	26.52 ± 2.06
RT-pha (T)	37.20 ± 6.18	40.20 ± 9. 33	39.11 ± 8.26	42.59 ± 7.62
CV RT-pha(%)	18.88 ± 7.02	25.79 ± 13.87	19.94 ± 6.05	20.95 ± 9.10
CorrR-pha (n)	26.90 ± 1.32	26.27 ± 1.57	27.00 ± 1.98	26.67 ± 1.88
AS (T)	46.93 ± 10.73	53.73 ± 12.73	45.19 ± 12.39	54.78 ± 10.60
Eye Fixation Pattern
Fixations (n)	3.74 ± 0.93	3.70 ± 0.94	4.18 ± 1.24	4.23 ± 1.06
TTEF (ms)	1428.13 ± 174.95	1539.57 ± 207.12	1526.70 ± 291.48	1484.63 ± 185.70
QE duration (ms)	856.87 ± 289.47	883.00 ± 262.06	640.74 ± 247.41	743.41 ± 303.51
QE onset (ms)	523.80 ± 235.94	596.53 ± 261.55	418.96 ± 206.46	468.52 ± 215.80
QE offset (ms)	439.20 ± 184.23	442.57 ± 153.38	287.96 ± 131.50	325.89 ± 174.45
Catch Performance
Catch (n)	2.63 ± 2.62	4.07 ± 2.69	4.52 ± 2.90	4.96 ± 3.07
MT (ms)	614.03 ± 128.68	599.37 ± 140.97	576.63 ± 136.40	567.59 ± 134.61

Note: Err% – the number of errors; PRZ – the number of processed target characters; CP – concentration performance; AS – alert effect; RT-ton – mean reaction time in no-alert trials; CV RT-ton – coefficient of variation of RTs-ton; RT-pha – mean reaction time in alert trials; CV RT-pha – coefficient of variation of RTs-pha; CorrR-ton, CorrR-pha – a number of correct responses in no-alert and alert trials, respectively; TTEF – total time of eye fixations; QE – quiet eye; MT – arm movement time; SS – standard score; T – T-score