Social Genomics of Healthy and Disordered Internet Gaming

Objectives: To combine social genomics with cultural approaches to expand understandings of the somatic health dynamics of online gaming, including in the controversial nosological construct of internet gaming disorder (IGD). Methods: In blood samples from 56 U.S. gamers, we examined expression of the conserved transcriptional response to adversity (CTRA), a leukocyte gene expression profile activated by chronic stress. We compared positively engaged and problem gamers, as identified by an ethnographically developed measure, the Positive and Negative Gaming Experiences Scale (PNGE-42), and also by a clinically derived IGD scale (IGDS-SF9). Results: CTRA profiles showed a clear relationship with PNGE-42, with a substantial linkage to offline social support, but were not meaningfully associated with disordered play as measured by IGDS-SF9. Conclusions: Our study advances understanding of the psychobiology of play, demonstrating via novel transcriptomic methods the association of negatively experienced internet play with biological measures of chronic threat, uncertainty, and distress. Our findings are consistent with the view that problematic patterns of online gaming are a proxy for broader patterns of biopsychosocial stress and distress such as loneliness, rather than a psychiatric disorder sui generis, which might exist apart from gamers ’ other life problems. By confirming the biological correlates of certain patterns of internet gaming, culturally-sensitive genomics approaches such as this can inform both evolutionary theorizing regarding the nature of play, as well as current psychiatric debates about the appropriateness of modeling distressful gaming on substance addiction and problem gambling

Cultural Models of Raça: The Calculus of Brazilian Racial Identity Revisited

Nearly 50 years ago, Marvin Harris published a seminal paper that examined how Brazilians create taxonomic categories of racial identity. In the intervening decades, new cognitive theories and analytical approaches have enabled researchers to investigate cultural domains with increased sophistication and nuance. In this paper, we revisit, replicate, and extend Harris’s research by utilizing modern cognitive anthropological approaches such as multidimensional scaling and cultural consensus analysis. Utilizing the same facial portraits as in the original study, we ask a contemporary sample of 34 Brazilians to identify and sort these images by racial identity. We then compare Harris’s original data, reanalyzed with modern techniques, to show that Brazilians had, and still hold, structured and coherent models of race. This finding has important social ramifications for race in Brazil and highlights the importance of replicability in the social sciences