Concerns have been growing about the veracity of psychological research. Many findings in psychological science are based on studies with insufficient statistical power and nonrepresentative samples, or may otherwise be limited to specific, ungeneralizable settings or populations. Crowdsourced research, a type of large-scale collaboration in which one or more research projects are conducted across multiple lab sites, offers a pragmatic solution to these and other current methodological challenges. The Psychological Science Accelerator (PSA) is a distributed network of laboratories designed to enable and support crowdsourced research projects. These projects can focus on novel research questions, or attempt to replicate prior research, in large, diverse samples. The PSA’s mission is to accelerate the accumulation of reliable and generalizable evidence in psychological science. Here, we describe the background, structure, principles, procedures, benefits, and challenges of the PSA. In contrast to other crowdsourced research networks, the PSA is ongoing (as opposed to time-limited), efficient (in terms of re-using structures and principles for different projects), decentralized, diverse (in terms of participants and researchers), and inclusive (of proposals, contributions, and other relevant input from anyone inside or outside of the network). The PSA and other approaches to crowdsourced psychological science will advance our understanding of mental processes and behaviors by enabling rigorous research and systematically examining its generalizability.

No abstract

No abstract

The change in the level of oxytocin and cortisol was tested in the participants of hypnotic interaction in standardised laboratory sessions with healthy volunteers.Pre to posthypnosis changes of oxitocin and cortisol were related to the hypnotic susceptibility of Ss, and to relational experiences reposted by subjects and hypnotists on several paper and pencil tests (AIM, DIH, s-EMBU).Results show that the changes in oxytocin are not related to the hypnotic susceptibility, but to the relational experiences. After the hypnotic interaction, the level of oxytocin increases in the subject if the perceived harmony with the hypnotist is high (DIH), while it increases in the hypnotist if the subject has memories of less warm emotional relationship with his/her parents (s-EMBU).The results are interpreted within the social psychobiological model of hypnosis.