Table 1.

Factor loadings from exploratory factor analysis of item scores from 1828 drug experiences (extraction method: principal axis factor; rotation method: promax with Kaiser normalization; loadings taken from pattern matrix).

Item:	Factor 1 Ego-dissolution	Factor 2 Ego-inflation
I felt especially assertive	0.014	0.691
I experienced a dissolution of my “self” or ego	0.883	−0.040
I felt more important or special than others	−0.034	0.715
I felt at one with the universe	0.830	0.010
My ego felt inflated	−0.154	0.756
I felt a sense of union with others	0.700	0.167
I felt especially sure-of-myself	0.151	0.824
I experienced a decrease in my sense of self-importance	0.663	−0.066
I felt especially keen and competitive	−0.134	0.725
I experienced a disintegration of my “self” or ego	0.897	−0.070
I felt like my viewpoint was worth more than other peoples’	−0.075	0.667
I felt far less absorbed by my own issues and concerns	0.624	0.112
I felt especially self-confident	0.073	0.847
I lost all sense of ego	0.885	−0.043
I felt especially self-assured	0.156	0.822
All notion of self and identity dissolved away	0.845	−0.042

Items in bold comprise the Ego-Dissolution Inventory (EDI), whilst the remaining items relate to ego-inflation. All factor loadings >0.2 are in bold.