Table 2.

Group statistics and Cohen’s d at each magnitude

	Dual users		Controls		Cohen’s d
Magnitude	Mean k	SD	Mean k	SD
$0.10	−1.29	3.58	−1.92	2.94	0.192
$1.00	−2.01	2.87	−3.21	2.35	0.457
$10.00	−2.30	2.52	−3.76	1.99	0.643
$100.00	−3.06	2.83	−4.83	1.87	0.735
$1000.00	−4.33	2.44	−6.07	1.49	0.860