Table 1.

Group demographics, personality and mood state measures as well as group statistics

Variable	Placebo			Yohimbine			t	df	p	Cohen’s d	95% CI
	N	Mean	SD	N	Mean	SD					Lower	Upper
Demographic information
Age	21	21.29	3.27	21	23.19	5.41	− 1.38	40	.175	− 0.43	− 4.69	0.88
Weight (kg)	21	70.99	10.72	21	68.96	8.15	0.69	40	.493	0.21	− 3.9	7.97
Height (m)	21	1.76	0.1	21	1.73	0.09	0.84	40	.406	0.26	− 0.04	0.08
BMI (kg/m2)	21	22.96	2.68	21	22.97	2.37	− 0.02	40	.988	− 0.01	− 1.59	1.57
Alcohol units per week	21	12.91	10.5	21	11.4	11.55	0.45	40	.659	0.14	− 5.37	8.4
RAVLT	18	6.56	2.12	19	5.9	1.45	1.11	35	.274	0.37	− 0.55	1.87
Trait impulsivity
BIS total	21	66.95	10.52	21	62.76	9.93	1.33	40	.192	0.41	− 2.19	10.57
UPPS-P
Negative urgency	21	28.91	6.58	21	25.19	5.4	2	40	.052	0.62	− 0.04	7.47
Premeditation	21	22.38	4.57	21	19.95	5.2	1.61	40	.116	0.5	− 0.62	5.48
Perseverance	21	21.05	4.93	21	18.81	5.22	1.43	40	.161	0.44	− 0.93	5.41
Sensation seeking	21	40.24	5.21	21	34.57	7.53	2.83	40	.007	0.88	1.63	9.71
Positive urgency	21	30.43	10.19	21	26.52	7.31	1.43	40	.161	0.44	− 1.63	9.44
Mood measures
PANAS
NA pre	21	11.71	2.43	21	12.86	2.46	− 1.52	40	.138	− 0.47	− 2.67	0.38
PA pre	21	28.33	5.8	21	30.38	7.48	− 0.99	40	.327	− 0.31	− 6.22	2.13
STAI
Trait anxiety	21	39.1	7.08	21	39.71	7.46	− 0.28	40	.784	− 0.09	− 5.15	3.92
State anxiety	21	34.91	7.88	21	32.71	7.81	0.91	40	.371	0.28	− 2.7	7.08