Snapshot · Modern Wisdom
The sex difference in people-versus-things career interests was found in 53 out of 53 nations in one study and 80 out of 80 nations in another, making it one of the most cross-culturally universal findings in social science.
Where this was said
At 2:06:40 · chapter starts 2:03:30
Moving to personality, Stewart-Williams focuses on the two most consistent sex differences in the Big Five: neuroticism (women higher, ~0.2–0.5 SD) and agreeableness (women higher, ~0.2–0.5 SD). Neuroticism is explained as the flip side of male risk-taking — anxiety is self-protective, and women evolved more of it because the cost-benefit calculus of risk is different when your ceiling offspring number is lower. Agreeableness maps onto reduced within-sex competition and stronger selection for cooperative, compassionate social bonding. Smaller differences in openness, conscientiousness, and extraversion are noted. The episode's most empirically striking finding in this section is the people-versus-things career interest gap [1] — Steve Stewart-Williams "People vs things difference found in 80/80 nations: The sex difference in people-versus-things career interests was found in 53 out of 53 n…" 2:06:40 : an effect size of around one standard deviation or more, first documented in 1911, and found in 53/53 nations in one study and 80/80 in another with half a million participants. Despite decades of deliberate social pressure to close it, the gap has not budged. Its persistence through the gender equality paradox — growing larger in more egalitarian societies — is one of the strongest arguments for an innate contribution.
In the Clark-Hatfield study, a good-looking stranger approached random campus students offering a date, a visit to their room, or immediate sex. For the sex offer: 75% of men said yes, 0% of women did. Men who declined apologised and asked for a rain check. Women who were approached simply reacted with disgust.
In the Clark-Hatfield street study, 75% of men agreed to have sex with an attractive stranger who approached them on campus, while exactly 0% of women agreed to the same offer.
The sex difference in people-versus-things career interests was first documented in 1911 and has remained consistent ever since, predating most modern gender role pressures.
The widely cited ego-depletion model — the idea that willpower is a finite resource that gets depleted — failed to replicate in follow-up studies.
Humans are estimated to have 5,000–7,000 thoughts per day, yet can recall essentially none of them afterward, highlighting why in-the-moment emotional tracking matters.
A large Harvard study found that a wandering mind is an unhappy mind — people report greater happiness when their attention is tethered to the present, even if the task is unpleasant.
A key study finding that we have a 'credit card's worth of plastic' in our bodies was likely skewed because researchers used nitrile gloves that shed plastic particles onto the microplastic detector.
Emotionally sensitive people have a hyperactive amygdala, an underactive prefrontal cortex, and a frayed connection between the two — making emotional regulation structurally harder.
Rejection sensitivity can be observed as early as age 2 or 3, suggesting it has strong developmental and likely genetic roots.
A Yale study found that non-judgmental observation of emotions — without rushing to resolve them — reduces activation in the brain, making it a powerful regulation tool.
Dan Gilbert's research found that the psychological immune system — the brain's ability to justify and find satisfaction in choices — activates most powerfully when a decision is perceived as irreversible.
Barry Schwartz's research found that maximizers — people who try to optimize every decision — tend to achieve objectively better outcomes but report lower happiness than satisficers who choose 'good enough.'
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