Two new books about sharks reveal how and why we should conserve them

New research concludes that acts of generalized reciprocity—including initiating generosity and, upon being treated generously, paying it forward—are reduced when there is resource asymmetry between potential benefactors.

New research: Compared with 24.1% of participants without a history of psychopathology, 9.8% of participants with a lifetime history of psychopathology met optimal well-being (OWB). Adults with a history of substance use disorders (10.2%) and depression (7.1%) were the most likely to report OWB.

Feel Like You Talk Too Much? A New Study Shows People May Like It