Disgust: While avoiding contaminated food is a key adaptive problem, we also had to avoid having sex with individuals that could harm our survival, our children’s survival, or generally reproductive success

Sexual Disgust: An Evolutionary Perspective. Courtney L. Crosby and David M. Buss.  Emotion Researcher, 2020. emotionresearcher.com/sexual-disgust-an-evolutionary-perspective/

Introduction: One of the first emotions explored by Charles Darwin, disgust, presumably evolved to solve adaptive problems related to our health. Examples of these problems include avoiding ingesting toxic or pathogenic substances, such as rotting meat or moldy mushrooms. However, a key scientific question is whether disgust evolved to solve adaptive challenges in addition to food consumption. Darwin described disgust as a revulsion to offensive objects, primarily those of taste, but extended to anything that causes extreme dislike or distaste—through vision, smell, or touch (Darwin, 1872). While avoiding contaminated food is a key adaptive problem that our human ancestors faced, they also had to avoid having sex with individuals that could harm their survival, their children’s survival, or more generally their reproductive success. Sexual disgust may have evolved as a somewhat specialized emotion—based on the underlying architecture of disgust—to solve these problems (Tybur, Lieberman, & Griskevicius, 2009).

Big Five traits are associated with the frequency with which we visit different places on a daily basis; & spending time in a particular place predicts momentary personality states & their short-term trait expression over time

Matz, S. C., & Harari, G. M. (2020). Personality–place transactions: Mapping the relationships between Big Five personality traits, states, and daily places. Journal of Personality and Social Psychology, May 2020. https://doi.org/10.1037/pspp0000297

Abstract: People actively select their environments, and the environments they select can alter their psychological characteristics in the moment and over time. Such dynamic person–environment transactions are likely to play out in the context of daily life via the places people spend time in (e.g., home, work, or public places like cafes and restaurants). This article investigates personality–place transactions at 3 conceptual levels: stable personality traits, momentary personality states, and short-term personality trait expressions. Three 2-week experience sampling studies (2 exploratory and 1 confirmatory with a total N = 2,350 and more than 63,000 momentary assessments) were used to provide the first large-scale evidence showing that people’s stable Big Five traits are associated with the frequency with which they visit different places on a daily basis. For example, extraverted people reported spending less time at home and more time at cafés, bars, and friends’ houses. The findings also show that spending time in a particular place predicts people’s momentary personality states and their short-term trait expression over time. For example, people reported feeling more extraverted in the moment when spending time at bars/parties, cafés/restaurants, or friends’ houses, compared with when at home. People who showed preferences for spending more time in these places also showed higher levels of short-term trait extraversion over the course of 2 weeks. The findings make theoretical contributions to environmental psychology, personality dynamics, as well as the person–environment transactions literature, and highlight practical implications for a world in which the places people visit can be easily captured via GPS sensors.