Khandis Blake

Not within spitting distance: Salivary immunoassays of estradiol have subpar validity for predicting cycle phase.

Ruben C Arslan, Khandis Blake, Laura J Botzet, Paul-Christian Bürkner, Lisa DeBruine, Tom Fiers, Nicholas Grebe, Amanda Hahn, Ben C Jones, Urszula M Marcinkowska, Sunni L Mumford, Lars Penke, James R Roney, Enrique F Schisterman, Julia Stern

Journal article  |  2023  |  Psychoneuroendocrinology

Salivary steroid immunoassays are widely used in psychoneuroendocrinological studies of menstrual cycle phase, puberty, and menopa..

Societies should not ignore their incel problem.

Khandis R Blake, Robert C Brooks

Journal article  |  2023  |  Trends Cogn Sci

Involuntarily celibate men ('incels') commonly advocate for societal disruption, including violence toward women. Their anger can ..

Number of Close Kin but Not Gendered Fitness Interests Shapes Sex Role Attitudes

KR Blake, A Wu, H McGovern, RC Brooks

Journal article  |  2023  |  Adaptive Human Behavior and Physiology

Objective: Gendered Fitness Interests (GFI) Theory posits that the sex of one’s close kin is a source of variation in socio-politi..

Dating app usage and motivations for dating app usage are associated with increased disordered eating.

K Blake, J Portingale, S Giles, S Griffiths, I Krug

Journal article  |  2022  |  J Eat Disord

The centrality of physical appearance in dating app environments may constitute an appearance-related pressure that increases the ..

When fertile, women seek status via prestige but not dominance.

Khandis R Blake

Journal article  |  2022  |  Proc Natl Acad Sci U S A

Biological predictors of human dominance are hotly contested, with far-reaching implications for psychological sex differences and..

Effects of gender inequality and wealth inequality on within-sex mating competition under hypergyny

RC Brooks, KR Blake, L Fromhage

Journal article  |  2022  |  Evolution and Human Behavior

Resources are often central to the formation and persistence of human consortships, and to the evolutionary fitness consequences o..

Menstrual cycle and hormonal contraception effects on self-efficacy, assertiveness, regulatory focus, optimism, impulsiveness, and risk-taking

KR Blake, M McCartney, RC Arslan

Journal article  |  2022  |  Journal of Experimental Social Psychology

The Fertility-Assertiveness Hypothesis posits that women affect their environment and assert their desires more so during the fert..

Experimental and cross-cultural evidence that parenthood and parental care motives increase social conservatism.

Nicholas Kerry, Laith Al-Shawaf, Maria Barbato, Carlota Batres, Khandis R Blake, Youngjae Cha, Gregory V Chauvin, Jeremy DW Clifton, Ana Maria Fernandez, Andrzej Galbarczyk, Maliki E Ghossainy, Dayk Jang, Grazyna Jasienska, Minoru Karasawa, Lasse Laustsen, Riley Loria, Francesca Luberti, James Moran, Zoran Pavlović, Michael Bang Petersen, et al.

Journal article  |  2022  |  Proc Biol Sci

Differences in attitudes on social issues such as abortion, immigration and sex are hugely divisive, and understanding their origi..

Fertility predicts self-development-oriented competitiveness in naturally cycling women but not hormonal contraceptive users

Lindsie C Arthur, Khandis R Blake

Journal article  |  2022  |  ADAPTIVE HUMAN BEHAVIOR AND PHYSIOLOGY

Objective: A growing body of research has begun investigating the relationship between hormones and female competitiveness. Many r..

Sex-dependent selection, ageing, and implications for "staying alive".

Robert C Brooks, Khandis R Blake

Journal article  |  2022  |  Behav Brain Sci

Incorporating theoretic insights from ageing biology could advance the "staying alive" hypothesis. Higher male extrinsic mortality..