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This week asks a hard question. Can the same biology that helps us love our families also make us suspicious of strangers? We will look at a scientist who studies the biology of bonding, a psychologist who showed how easily people take sides, and a famous summer camp where boys became enemies and then friends.

We begin with Ruth Feldman, a brain scientist in Israel who also teaches at Yale. She studies how parents and babies bond, and the role of oxytocin, often called the “bonding hormone.” Feldman argues that the systems that tie a mother to her baby later help us bond with our group. But they can also make us fear people outside it, sometimes over small differences. She also looked for a way to turn this around. She ran an eight-week dialogue program for Israeli and Palestinian teenagers. Afterward, the teens were less hostile, more understanding, and less stressed around each other. Seven years later, those who changed the most were more open to compromise and peace.

Next, Henri Tajfel shows how little it takes for people to take sides. Tajfel was a Polish Jew who fought in the French army in World War II and spent the war as a prisoner. He survived by hiding that he was Jewish. Nearly all his family died in the Holocaust. Later, in England, he split schoolboys into two groups for meaningless reasons, such as which of two painters they liked. The boys never met their group members. Even so, when asked to hand out money, they favored their own group. Many even chose to make the gap between the groups as big as possible, even when that meant less money for their own side. His conclusion: simply being put into a group is enough to start prejudice.

Finally, Muzafer Sherif shows how groups become enemies, and how they can stop. In 1954, he brought 22 boys, aged 11 and 12, to a summer camp at Robbers Cave State Park in Oklahoma. They formed two groups, the Eagles and the Rattlers. Then came a tournament with prizes. The Eagles burned the Rattlers’ flag. The Rattlers raided the Eagles’ cabin. Staff had to pull the boys apart. Just spending time together, at meals or movies, did not help. What worked was giving both groups problems they could only solve together, like fixing the camp’s water supply and starting a stuck truck. Critics note that the adults running the camp quietly helped stir up the fighting, and that an earlier attempt in 1953 had failed.

Feldman suggests our capacity for love helps draw the line between “us” and “them.” Tajfel shows how easily that line appears. Sherif shows that competition makes it sharper, and working together can soften it. That leads to our central question:

Is prejudice partly an unintended side effect of the biology that allows us to love?

Ruth Feldman

Henri Tajfel

Muzafer Sherif

Timezones: 6:00 AM Pacific, 7:00 AM Mountain, 8:00 AM Central, 9:00 AM Eastern (USA)

About Our Group: We welcome open-minded, respectful conversation on Stoicism and its relevance to daily life, personal growth, and modern thought. Our discussions connect ancient philosophy with contemporary science, psychology, economics, and culture, with the shared aim of cultivating wisdom together. The meeting begins at 9:00 AM Eastern, with dialogue starting promptly at 9:15.

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