Table 2. Impulsive buying and financial decision styles of total sample and ADHD groups.
| Total sample | ADHD | Adult-only ADHD | Subthreshold ADHD | No ADHD | Group differences | |||
|---|---|---|---|---|---|---|---|---|
| Statistics | p | d | ||||||
| IBQ total score M (SD) | 59.8 (10.0) | 62.7 (10.5) | 63.1 (11.3)a | 59.6 (11.0) | 58.8 (8.8) | F(3,529) = 4.4 | .005* | 0.316 |
| IBQ Cognitive component M (SD) | 32.6 (5.5) | 34.6 (6.3)a,b | 34.2 (6.3)a | 32.1 (6.1) | 31.9 (4.7) | F(3,529) = 5.2 | .001* | 0.343 |
| IBQ Affective component M (SD) | 27.4 (5.4) | 28.1 (5.3) | 28.9 (5.8)a | 27.5 (5.9) | 26.8 (5.0) | F(3,529) = 2.8 | .039* | 0.252 |
| IBQ Situational component M (SD) | 9.7 (1.6) | 9.9 (1.5) | 9.7 (1.7) | 9.6 (1.8) | 9.7 (1.5) | F(3,529) = 0.6 | .615 | 0.117 |
| FDS Rational M (SD) | 18.8 (2.8) | 18.4 (2.9) | 18.5 (3.0) | 18.9 (2.8) | 18.8 (2.7) | F(3,529) = 0.7 | .529 | 0.130 |
| FDS Intuitive M (SD) | 16.4 (3.2) | 16.9 (3.1) | 17.0 (2.9) | 16.6 (3.2) | 16.1 (3.2) | F(3,529) = 1.9 | .135 | 0.208 |
| FDS Dependent M (SD) | 16.4 (3.6) | 16.3 (3.6) | 17.2 (3.4) | 16.6 (3.8) | 16.1 (3.6) | F(3,529) = 1.7 | .161 | 0.196 |
| FDS Avoidant M (SD) | 12.0 (4.0) | 13.0 (4.5)a | 14.5 (4.5)a,b | 12.2 (4.1) | 11.2 (3.5) | F(3,529) = 12.9 | < .001* | 0.541 |
| FDS Spontaneous M (SD) | 8.7 (2.6) | 9.9 (3.1)a,b | 9.2 (2.9) | 8.6 (2.5) | 8.4 (2.3) | F(3,529) = 5.5 | .001* | 0.353 |
Note. ADHD = Attention Deficit Hyperactivity Disorder, IBQ = Impulsive Buying Questionnaire, FDS = Financial Decision Styles questionnaire.
* p ≤ .05. Post-hoc Bonferroni significant group differences:
a versus No ADHD group and
b versus Subthreshold ADHD group.