Chemical engineers, computer & information systems managers, & management analysts are virtually all Republican; epidemiologists, computer programmers, & historians are virtually all Democrats

Occupational Engagement and Partisanship in the United States. Darin DeWitt. Political Studies Review, July 4, 2020. https://doi.org/10.1177/1478929920932129

Abstract: In this article, I present a portrait of the American power elite and their relationship with the party system. I focus on occupational categories as institutional positions and take up three questions: Which occupational categories wield social influence? How politically mobilized is each of these occupational categories? And what partisan tilt is exhibited by each category? My results help clarify the contemporary structure of American electoral competition. Furthermore, they also shed light on which social groups have a voice in American politics and, thus, speak to questions of political equality.

Keywords: power elite, occupational subcultures, party identification, political inequality

No Evidence for a Tradeoff between Competitive Traits and Ejaculate Quality in Humans

No Evidence for a Tradeoff between Competitive Traits and Ejaculate Quality in Humans. Tara DeLecce, Todd K. Shackelford, Bernhard Fink, Mohaned G. Abed. [in press, Evolutionary Psychology, June 2020]. https://www.toddkshackelford.com/downloads/Delecce-et-al-EP.pdf

Abstract: Research in nonhuman animals (including insects, birds, and primates) suggests a tradeoff in males between investment in competitive traits and investment in ejaculate quality. Previous research reported a negative association between perceived strength and ejaculate quality, suggesting that this tradeoff also applies to human males. We conducted novel analyses of data secured as part of a larger project (Pham et al., 2018) to assess the relationship between competitive traits (shoulder-to-hip ratio, handgrip strength, and height) and ejaculate quality (indexed by sperm morphology, sperm motility, and sperm concentration) in a sample of 45 men (ages ranging 18 to 33 years; M = 23.30, SD = 3.60). By self-report, participants had not had a vasectomy and had never sought treatment for infertility. We controlled for several covariates known to affect ejaculate quality (e.g., abstinence duration before providing an ejaculate) and found no statistically significant relationships between competitive traits and ejaculate quality; our findings therefore do not accord with previous research on humans. We highlight the need for additional research to clarify whether there is a tradeoff between investment in competitive traits and investment in ejaculate quality in humans.

Keywords: tradeoff hypothesis; ejaculate quality; shoulder-to-hip ratio; competitive traits

Check also A preliminary but methodologically improved investigation of the relationships between major personality dimensions and human ejaculate quality. Tara DeLecce et al. Personality and Individual Differences, Volume 153, January 15 2020, 109614. https://www.bipartisanalliance.com/2019/11/a-preliminary-but-methodologically.html

And also Disagreeable men produce higher-quality ejaculates. Tara Lynn DeLecce, Guilherme S. Lopes, Virgil Zeigler-Hill, Todd K. Shackelford. Human Behavior and Evolution Society 31st annual meeting. Boston 2019. https://www.bipartisanalliance.com/2019/07/disagreeable-men-produce-higher-quality.html