. 2023 Nov 16;38(1):19–32. doi: 10.1177/02698811231200019

Table 5.

Assessed domains and sub-factor reliability of each instrument.

Instrument	Dimensions/factors	Sample	Reliability (Cronbach’s α)	Paper
OAV	Oceanic Boundlessness [SPR]	591	0.95	Studerus et al. (2010)
	Dread of Ego Dissolution [SAR]		0.93
	Visionary Restructuralization [ASIT]		0.91
5D-ASC	Oceanic Boundlessness [SPR]	253	0.95	Studerus (2012)
	Dread of Ego Dissolution [SAR]		0.93
	Visionary Reconstruction [ASIT]		0.91
	Auditory Alterations [ASIT]		0.93
	Vigilance Reduction [O]		0.86
5D-ASC, 11 subscales	Experience of Unity [MSN]	591	0.88	Studerus et al. (2010)
	Spiritual Experience [MSN]		0.77
	Blissful State [MSN]		0.82
	Insightfulness [PE]		0.73
	Disembodiments [ASIT]		0.82
	Impaired Control and Cognition [ASIT]		0.85
	Anxiety [SAR]		0.89
	Complex Imagery [ASIT]		0.80
	Elemental Imagery [ASIT]		0.84
	Audio-Visual Synesthesia [ASIT]		0.91
	Changed Meaning of Percepts [PE]		0.79
HRS	Affect [PE]	75	0.81	Riba et al. (2001)
	Cognition [ASIT]		0.87
	Intensity [OS]		0.33
	Perception [ASIT]		0.88
	Somaesthesia [ASIT]		0.82
	Volition [O]		0.51
MEQ30	Mystical [MSN]	195	0.97	MacLean et al. (2012)
	Positive Mood [SPR]		0.92
	Ineffability [MSN]		0.90
	Transcendence Time and Space [ASIT]		0.86
M-Scale	Introvertive Mysticism [MSN]	1379	0.85	Hood et al. (2001)
	Extrovertive Mysticism [MSN]		0.82
	Interpretive Factor [MSN]		0.82
EDI	Total Score [MSN]	1828	0.93	Nour et al. (2016)
CEQ	Fear [SAR]	1052	0.84	Barrett et al. (2016)
	Grief [SAR]		0.86
	Physical Distress [PE]		0.81
	Insanity [SAR]		0.76
	Isolation [SAR]		0.77
	Death [SAR]		0.85
	Paranoia [SAR]		0.70
CADSS	Subjective Items [ASIT]	68	0.94	Bremner et al. (1998)
CADSS	Observer Items [O]	68	0.90	Bremner et al. (1998)
NDE	Cognitive [ASIT]	74	0.75	Greyson (1983)
	Affective [SPR]		0.86
	Paranormal [MSN]		0.66
	Transcendental [MSN]		0.76
EBI	Total Emotional Breakthrough Score [PE]	379	0.93	Roseman et al. (2019)
PSI	Delusory Thinking [O]	140	0.80	Mason et al. (2008)
	Perceptual Distortions [ASIT]		0.78
	Cognitive Disorganization [ASIT]		0.89
	Anhedonia [SAR]		0.27
	Mania [O]		0.67
	Paranoia [SAR]		0.85
PIQ	Avoidance and Maladaptive Patterns Insights [PE]	1661	0.93	Davis et al. (2021)
	Goals and Adaptive Patterns [PE]		0.85
	Insights [PE]
APEC	Acceptance-related experience [PE]	997	0.92	Wolff et al. (2022)
APEC	Avoidance-related experience [PE]	997	0.78	Wolff et al. (2022)
PIS	Psychological Insight [PE]	279	0.94	Peill et al. (2022)
ASEQ	Joy in Life [MSN]			Harris and Gurel (2012)
	Relationship to the Sacred [MSN]
	Toxic Feelings [O]
MOS	Mysticism [MSN]	1468	0.94	Francis and Louden (2004)
SIMO	Mysticism [MSN]	1468	0.86	Francis and Louden (2004)
DEQ	Total Drug Effect Questionnaire Score [O]			Morean et al. (2013)

We did not find any data on the psychometric abilities of the SOCQ/the MEQ-43, the ARCI, DEQ and APZ, ASEQ.

ASIT: Altered sensory input and thoughts; MSN: Mystical or spiritual nature; O: Other; OS: Overall strength of the experience; PE: Psychological experience; SAR: Subjective adverse reactions; SPR+: Subjective positive reactions.