Who Should We Trust? How Should We Sleep?

Curated by CLAI

You Had Me at Hello: trustworthiness, aggressiveness, confidence, dominance and warmth. In less than a second, the time it takes to say “hello,” we make a snap judgment about someone’s personality.

  • The pitch of the untrustworthy voice was much lower than the male deemed most trustworthy. McAleer says this is probably because a higher pitched male voice is closer to the natural pitch of a female, making the men sound less aggressive and friendlier than the lower male voices.
  • All seem to perceive that one voice is the most trustworthy and another voice is the least trustworthy
Humans make split-second judgments about others based on the way they talk.

Humans make split-second judgments about others based on the way they talk.
(Katherine Streeter, NPR)

SLEEP CULTURE: This obsession with eight hours of continuous sleep is largely a creation of the electrified age. Back when night fell for, on average, half of each 24 hours, people slept in phases.

  • People fell asleep not long after dark for the “first sleep.” Then they awoke, somnolent but not asleep, often around midnight, when for a few hours they talked, read, prayed, had sex, brewed beer or burgled. Then they went back to sleep for a shorter period.
  • There is every reason to believe that segmented sleep, such as many wild animals exhibit, had long been the natural pattern of our slumber before the modern age, with a provenance as old as humankind.
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