The administration of classic psychedelics has been associated with well-being and mental
health benefits as well as risks and adverse events. The acute subjective effects of …

Reports of psychedelic experiences may contain similarities and differences across cultural
contexts, but most current characterizations and quantifications of psychedelic experiences …

Pretesting survey items for interpretability and relevance is a commonly recommended
practice in the social sciences. The goal is to construct items that are understood as …

Objectives Meditation is increasingly popular, and yet studies of meditation-related adverse
effects, or experiences of unusual psychological states, have mostly focused on those of …

The building block approach (BBA) is a metatheoretical framework for studying the complex
relationship between human psychology and cognition on the one hand, and socio-cultural …

Meditation is increasingly popular and yet studies of unexpected and/or distressing
meditative events have focused on extremely pleasant or unpleasant experiences, despite …

The aim of the present study was to test and validate the German version of a new
instrument for measuring “wakefulness”, defined as “an expansive, higher-functioning, and …

Many people believe that certain mental states, such as love, continue after physical death.
However, the prevalence of such “continuity beliefs” and their relationship with culture and …

Many researchers refer to psychedelic, religious, spiritual, and mystical experiences (PEs,
REs, SEs, MEs) as if they are all distinct types of experiences. Given the many meanings of …

Light of a divine or transcendent nature is widely revered in various religious and mystical
traditions around the world, and luminosity with mystical qualities such as love, bliss, peace …