Interpreting a failure to replicate is complicated by the fact that the failure could be due to the original finding being a false positive, unrecognized moderating influences between the original and replication procedures, or faulty implementation of the procedures in the replication. One strategy to maximize replication quality is involving the original authors in study design. We (N = 17 Labs and N = 1,550 participants, after exclusions) experimentally tested whether original author involvement improved replicability of a classic finding from Terror Management Theory (Greenberg et al., 1994). Our results were non-diagnostic of whether original author involvement improves replicability because we were unable to replicate the finding under any conditions. This suggests that the original finding was either a false positive or the conditions necessary to obtain it are not fully understood or no longer exist. Data, materials, analysis code, preregistration, and supplementary documents can be found on the OSF page: https://osf.io/8ccnw/

Social thermoregulation theory posits that modern human relationships are pleisiomorphically organized around body temperature regulation. In two studies (N = 1755) designed to test the principles from this theory, we used supervised machine learning to identify social and non-social factors that relate to core body temperature. This data-driven analysis found that complex social integration (CSI), defined as the number of high-contact roles one engages in, is a critical predictor of core body temperature. We further used a cross-validation approach to show that colder climates relate to higher levels of CSI, which in turn relates to higher CBT (when climates get colder). These results suggest that despite modern affordances for regulating body temperature, people still rely on social warmth to buffer their bodies against the cold.

Statement: Our preregistered hypotheses and study protocol(s) are publicly available (https://osf.io/46pg7/wiki/), along with all de-identified data and code needed to reproduce our findings (https://osf.io/46pg7/files/).

In the Human Penguin Project ( N = 1755), 15 research groups from 12 countries collected body temperature, demographic variables, social network indices, seven widely-used psychological scales and two newly developed questionnaires ( the Social Thermoregulation and Risk Avoidance Questionnaire (STRAQ-1) and the Kama Muta Frequency Scale (KAMF)). They were collected to investigate the relationship between environmental factors (e.g., geographical, climate etc.) and human behaviors, which is a long-standing inquiry in the scientific community. More specifically, the present project was designed to test principles surrounding the idea of social thermoregulation , which posits that social networks help people to regulate their core body temperature. The results showed that all scales in the current project have sufficient to good psychometrical properties. Unlike previous crowdsourced projects, this dataset includes not only the cleaned raw data but also all the validation of questionnaires in 9 different languages, thus providing a valuable resource for psychological scientists who are interested in cross-national, environment-human interaction studies.

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Nostalgia is a fond longing for the past that has been shown to increase feelings of meaning, social connectedness, and self-continuity. Although nostalgia for personal memories provides intra- and interpersonal benefits, there may be negative consequences of group-based nostalgia on the perception and acceptance of others. The presented research examined national nostalgia (a form of collective nostalgia), and its effects on group identification and political attitudes in the United States. In a sample of US voters (N = 252), tendencies to feel personal and national nostalgia are associated with markedly different emotional and attitudinal profiles. Higher levels of national nostalgia predicted both positive attitudes toward President Trump and racial prejudice, though there was no evidence of such relationships with personal nostalgia. National nostalgia most strongly predicted positive attitudes toward president Trump among those high in racial prejudice. Furthermore, nostalgia's positive relationship with racial prejudice was partially mediated by perceived outgroup threat. Results from this study will help us better understand how the experience of national nostalgia can influence attitudes and motivate political behavior.

Objective: This study investigated whether HIV testing attitudes, HIV conspiracy beliefs, and reported sexual partner disclosure of HIV/STI status related to one-month self-report HIV testing outcomes following a brief intervention among Black women aged 18-25 years residing in rural Mississippi.Participants: Black women (N=119; Mage=19.90, SD=1.81) recruited in rural Mississippi completed an online assessment before a brief HIV prevention intervention and a one month follow-up assessment dur­ing January to November 2016.Main Outcome Measures: Self-reported HIV testing 30-days following the interven­tion, partner HIV/STI status disclosure, beliefs in HIV conspiracy theory, and HIV testing attitudes in pre- and post-interven­tion assessments. Bivariate and multivariate analyses tested associations with HIV testing behaviors following the intervention.Results: Moderated moderation was used to examine whether HIV conspiracy beliefs and partner disclosure status both moder­ated the relationship between pre-interven­tion attitudes toward HIV testing and HIV testing at 1-month follow-up. It was found that both HIV conspiracy beliefs and partner disclosure moderated the relationship between attitudes and HIV testing at one-month follow-up. When partner disclosure was low, women with more negative at­titudes toward testing and higher conspiracy beliefs were less likely to get tested than those with negative attitudes and lower conspiracy beliefs; conspiracy beliefs did not relate to testing outcomes when testing attitudes were positive.Conclusion: Findings suggest that interven­tions may benefit from accounting for con­spiracy beliefs and the dyadic status disclo­sure when encouraging young rural women to test for HIV.Ethn Dis. 2020;30(2):251- 260; doi:10.18865/ed.30.2.251