Update of the Altered States Database (ASDB): 2022-12-31

Abstract

The Altered States Database (ASDB) is an open science project, containing psychometric questionnaire data on altered states of consciousness experiences induced by diverse means. The database was first described in: Schmidt, T. T., & Berkemeyer, H. (2018). The Altered States Database: Psychometric Data of Altered States of Consciousness. In Front. Psychol. and an upgrade to cohere to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) 2020 standards has been reported in: Prugger, J., Derdiyok, E., Dinkelacker, J., Costines, C., & Schmidt, T. T. (2022). The Altered States Database: Psychometric data from a systematic literature review. In Sci. Data. Here, we report the update to include data until 2022-12-31. A systematic literature review according to PRISMA guidelines was conducted in which 431 items were screened, and data from 23 eligible journal articles was extracted. The complete data is available on Open Science Framework (OSF): https://osf.io/8mbru.