Table 1.
Sample characteristics for the CEQ and EDI validation sample.
Fig 1.
Path diagram for confirmatory factor analysis of CEQ items.
This figure displays the final confirmatory factor analysis model of the CEQ with standardized loadings and error variances. Numbers in brackets are the 95% confidence intervals for the estimates.
Table 2.
Model fit indices for factorial invariance analysis.
Table 3.
Factor correlations and factor reliabilities for the CEQ.
Table 4.
Correlations (Pearson’s r) examining relationships between CEQ and the STAI-S and the OBN scale.
Table 5.
Factor loadings obtained from exploratory factor analysis of 1254 responses to the German Ego-Dissolution Inventory (EDI) and additional items measuring ego-inflation (EII).
Table 6.
Correlations (Spearman’s rho) examining relationships between the condensed ego-dissolution scale (EDI-5) and related ASC scales in comparison to the ego-inflation scale (EII).
Fig 2.
Relationship between ego-dissolution (blue circles, solid line) or ego-inflation (red squares, dashed line), respectively, and estimated dose for different drug experiences. The figure displays linear regression lines of best fit, the corresponding coefficient of determination and p-value as well as error bars ±1 SEM and reproduces the results reported by Nour et al. [16] for (A) most intense hallucinogen experiences (n = 678), (B) typical hallucinogen experiences (n = 137), (C) cocaine experiences (n = 160), and (D) alcohol experiences (n = 204). Data of participants who did not estimate the dose taken were excluded from analysis.
Fig 3.
Relationship between (A) ego-dissolution or (B) ego-inflation, respectively, and subjective intensity compared across different drug experiences. This figure reproduces the results reported by Nour et al. [16] for intense hallucinogen experiences (solid blue line), typical hallucinogen experiences (light blue dotted line), cocaine experiences (red dashed line), and alcohol experiences (green dash-dot line). Intensity of the experience was rated on a visual analog scale, ranging from 0 (“not at all”) to 100 (“the most intense imaginable” for hallucinogens, “the most energized / wired imaginable” for cocaine, “the most inebriated / drunk imaginable” for alcohol).
Fig 4.
Relationship between ego-dissolution and ego-inflation for different drug experiences.
Mean scores of EDI-5 and EII items were used as a measure of ego-dissolution and ego-inflation, respectively, and plotted for intense hallucinogen experiences (blue crosses), typical hallucinogen experiences (light blue plus signs), cocaine experiences (red circles), and alcohol experiences (green triangles) experiences.