Table 1. Descriptive statistics of subjects (n = 261).

Characteristics	Valuesa	Missings
Age	27.86.0	0%
Body mass index	22.22.3	25%
Gender		0%
male	62% (161)
female	38% (100)
Education		0%
High school diploma	9% (23)
University students	56% (147)
University graduates	35% (91)
Hallucinogen-naïve		15%
yesb	59% (131)
no	41% (90)
Daily smoker		24%
yes	30% (59)
no	70% (139)
THC use		16%
never	16% (35)
rarelyc	50% (109)
sometimesd	35% (76)
Alcohol consumption		23%
< = 60 ml per month	55% (110)
>60 ml per month	45% (90)
ZKPQ
Impulsive Sensation Seekinge	0.40.8	52%
Neuroticism-Anxietye	−0.90.7	52%
Aggression-Hostilitye	−0.60.9	52%
Activitye	0.00.9	52%
Sociabilitye	−0.10.9	52%
TAS
Absorptionf	−0.81.2	72%
SCL-90-R
Global Severity Indexg	−0.30.9	31%

Note. THC = Tetrahydrocannabinol; ZKPQ = Zuckerman-Kuhlman Personality Questionnaire; TAS = Tellegen Absorption Scale; SCL-90-R = Symptom Check-List-90-Revised.

^aMeans standard deviations and frequencies are shown for continuous and categorical variables, respectively. Numbers in parenthesis indicate absolute frequencies.

^bExperience of a classical hallucinogen at least once in a lifetime previous to the first experimental day.

^cLess than once per month.

^d1–10 times per month.

^eNormed on the Bielefeld-Jena sample (n = 141) of Angleitner et al. [33].

^fNormed on the sample of Ritz et al. [36].

^gNormed on a German community sample (n = 1006) [40].