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Table 4 Descriptive statistics

From: Examining impulsivity as an endophenotype using a behavioral approach: a DRD2 TaqI A and DRD4 48-bp VNTR association study

  N Mean Min Max SD
BIS Attentional Impulsivity 182 17.03 9 29 3.49
BIS Motor Impulsivity 185 21.68 13 34 3.73
BIS Non-planning Impulsivity 181 25.38 14 38 4.07
BIS Total 168 63.93 37 95 9.24
EIQ Ventursomeness 190 9.58 0 17 3.51
EIQ Impulsivity 182 10.11 0 22 4.44
SSS Disinhibition 185 5.63 0 10 2.53
SSS Experience Seeking 186 5.40 0 10 1.96
SSS Boredom Susceptibility 190 3.07 0 8 2.02
SSS Thrill & Adventure Seeking 190 6.48 0 10 2.75
SSS Total 179 20.57 6 34 6.09
DDT* 166 0.05 0.00 1.72 0.02–0.17
  1. * untransformed DDT value with median and IQR given instead of Mean and SD
  2. BIS = Barratt impulsivity Scale; EIQ = Eysenck Impulsivity Questionnaire; SSS = Sensation Seeking Scale; DDT = Delay Discounting Task.