NPG Low PG Moderate PG Severe PG All sample ANOVA
  (n=24) (n=50) (n=126) (n=32) (n=132)      
  Mean (SD) Mean (SD) Mean (SD) Mean (SD) Mean (SD) F f p
BIS 11 total 59,3 (9) 59,6 (10,3) 65 (9,7) 69,6 (10,9) 63,9 (10,4) 8,80 0.34 <0.001*
Attentional 16,5 (3,5) 15,8 (3,3) 17 (2,9) 17,8 (3,7) 16,8 (3,2) 2,80 0.21 0,04
Motor 19,6 (2,8) 21 (4,5) 22,6 (3,8) 24,6 (4,8) 22,2 (4,2) 8,79 0.42 <0.001*
Nonplanning 23,2 (5,4) 22,7 (4,8) 25,3 (5,1) 27,1 (4,5) 24,8 (5,1) 6,61 0.3 <0.001*
Table 2: BIS-11 scores and ANOVA results; NPG =Non-problem gamblers; Low PG=low problem gamblers; Moderate PG=moderate problem gamblers ; Severe PG=severe problem gamblers; BIS-11=barratt Impulsiveness Scale 11; *p<0.05.