So at this point, there is not a separate licensing or credentialing in positive psychology itself.

目前来说，积极心理学,还没有独立的执照或证书。

哈佛公开课 - 幸福课课程节选

So she got a certificate at the end thanking her for participating in the clinical trial, and also telling her to go get the real vaccine because she hadn't had it yet.

试验最后,她得到了一个证明其参与,这项临床试验的证书,并且被告之要去注射真的疫苗,因为她还没有被注射过

耶鲁公开课 - 生物医学工程探索课程节选