Previous research has found associations between classic psychedelic use and nature-relatedness, but the link between classic psychedelic use and human–animal relations remains largely unexplored. Using data representative of the US adult population, with regard to age, sex and ethnicity (N = 2822), this pre-registered study assessed lifetime classic psychedelic use, ego dissolution during respondents’ most intense experience using a classic psychedelic, and three measures related to human–animal relations: speciesism, animal solidarity and desire to help animals. The results showed that lifetime classic psychedelic use was negatively associated with speciesism (β = −0.07, p = 0.002), and positively associated with animal solidarity (β = 0.04, p = 0.041), but no association was found with desire to help animals (β = 0.01, p = 0.542). Ego dissolution during the respondents’ most intense experience using a classic psychedelic was negatively associated with speciesism (β = −0.17, p < 0.001), and positively associated with animal solidarity (β = 0.18, p < 0.001) and desire to help animals (β = 0.10, p = 0.007). The findings indicate that classic psychedelics and ego dissolution may have an impact on human–animal relations. As these results cannot demonstrate causality, however, future studies should use longitudinal research designs to further explore the potential causal link between classic psychedelic use and human–animal relations.

Purpose Urbanisation is trending globally, leading to population densification and housing shortage and people living increasingly in isolation. This entails challenges to sustainable development including ecological, social and well-being issues. This paper aims to evaluate the effects of a six-month onboarding self-leadership programme including exercises in mindfulness and acceptance and commitment therapy, amongst residents in a co-living space (n = 24) and a waiting list (n = 21). Design/methodology/approach At baseline and post-intervention, participants filled out questionnaires and two waves of in-depth interviews (n = 24) were conducted. Repeated measures one-way analysis of variance and thematic text analyses were performed. Findings Participation in the programme significantly (all ps < 0.000 to 0.050) improved relationship quality and communication about one’s needs regarding work-non-work boundaries, especially amongst residents at the co-living space. Moreover, programme participation significantly increased perceived work-non-work boundary control, work-life balance, psychological well-being, psychological flexibility and self-compassion, with effect sizes (hp2) in the medium to the large range (0.14 to 0.39). Qualitative findings suggested that increased psychological flexibility and self-compassion encouraged co-living residents to be more vulnerable and trusting, which enabled communication regarding one’s needs and enhanced mutual social support and relationship quality. This, in turn, improved overall boundary management, work-life balance and well-being. Originality/value Co-living settings – while contributing to overall sustainable development through more efficient use of space and resources – can also contribute to societal and individual sustainability. However, to ensure this contribution, the physical environment including private areas and common and semi-public areas, as well as the socio-emotional environment need to be considered.

Researchers and practitioners increasingly emphasise the need to complement dominant external, technological approaches with an internal focus to support transformation toward sustainability. However, knowledge on how this internal human dimension can support transformation across individual, collective, and systems levels is limited. Our study addresses this gap. We examined the narratives of participants in the sustainability course “One Year in Transition”, using micro-phenomenology and thematic analysis. Our results shed light on the dynamics of inner–outer change and action and the necessary capacities to support them. This related to changes regarding participants’ perspectives, which became more relational and interconnected. We also showed that participants increasingly seek an inner space that provides direction and freedom to act. The data suggested that this, over time, leads to increasing internalisation, and the embodiment of a personal identity as a courageous and principled change agent for sustainability. Our results complement extant quantitative research in the field by offering a nuanced picture of the entangled nature of inner–outer transformation processes and associated influencing factors. In addition, they point towards ways in which inner dimensions can be leveraged to achieve change, thus filling existing knowledge gaps for reaching sustainability and associated goals across all levels.