The Infinite Monkey Cage
The Infinite Monkey Cage

How selfish are we really? - Jo Brand, Matti Wilks and Steve Jones

Brian Cox and Robin Ince kindly open the door for each other as they step into understanding altruism, asking why humans have evolved to help each other. Joining them to explore the human tendency to be kind is evolutionary biologist Steve Jones, psychologist Matti Wilks and comedian Jo Brand. Start

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Episode Summary

Executive Summary: The episode explores altruism from psychological, evolutionary, and social angles, asking whether truly selfless acts exist, how they develop in children, and why people help strangers. The panel concludes altruism is real but often mixed with emotion, reciprocity, and social norms, and that societies become more humane when helping is normalized and made easier.

Main Topics: Defining altruism (Priority: 5/5): The panel debates what counts as altruism: kindness without expectation of return, and evolutionary behavior that reduces one’s own fitness to benefit others. Evolutionary roots and kin selection (Priority: 5/5): Steve Jones argues altruism often begins in family groups and reciprocal arrangements, but human cooperation also depends on more complex forms of pure altruism. Children, empathy, and moral development (Priority: 5/5): Maddie Wilkes explains that very young children show early preferences for helpers, while older children’s altruism is shaped by group bias, cost, and moral norms. Strangers, kidney donation, and large-scale altruism (Priority: 4/5): The discussion highlights ‘extraordinary altruists’ such as non-directed kidney donors, showing that some people help unknown others even without direct reciprocity. Culture, trust, and societal wellbeing (Priority: 5/5): The panel links altruism to social trust, public health, and stronger institutions, arguing that high-trust societies tend to support more moral expansiveness and better outcomes. Performative vs genuine altruism (Priority: 4/5): Jo Brand and the others debate whether public acts of giving undermine sincerity, and whether publicizing generosity can still help establish helpful norms.

Key Arguments: Altruism can be defined as a kind or compassionate act done without expecting anything in return, often at some personal cost. From an evolutionary perspective, altruism means reducing one’s own fitness to increase another’s chances of passing on genes. Much human altruism starts in close groups or families, but reciprocal altruism and social norms allow it to scale beyond kin. Very young children already prefer helpers over hinderers, suggesting early-emerging moral sensitivity. Children appear less parochial than adults in some domains, showing relatively broader concern for strangers and distant others. True or pure altruism may exist, but it is likely rare and often mixed with the good feeling people get from helping. Group biases mean people are generally more altruistic toward those who are similar or close to them. Non-directed kidney donation is presented as a strong example of helping strangers without expecting return. High-trust societies appear more morally expansive and may generate better health and social outcomes. Incentives can backfire: paying people for blood donation may reduce intrinsic motivation and lower donations. Changing social norms and making helping easier are presented as the best practical ways to encourage altruism. Publicizing generosity can be uncomfortable, but it can also spread helpful behavior by making altruism visible and normal.

Data Points: Age of early helper preference: around 6 months - Research cited by Maddie Wilkes on infants preferring helper figures over hinderers Age when children begin sharing equally: about 4 years - Children say stickers should be shared equally by age four in experimental settings Age when children actually share equally: about 8 years - Observed age when children are more likely to behave in accordance with equal sharing Human species uniformity: most uniform mammal - Steve Jones claims Homo sapiens is more similar across the world than any other mammal Scott expedition rescue distance: 11 miles - Steve Jones notes Captain Scott and companions died about 11 miles from rescue Neanderthal group size: 30–40 people - Described as extended family groups in Siberian Neanderthal evidence Country-level family/trust study measure: moral circle expansiveness - Maddie Wilkes describes research comparing how broadly societies assign moral concern Blood donation incentive effect: financial payment can reduce donations - Steve Jones cites evidence that paying donors may decrease intrinsic motivation Dunbar’s number: 150 - Referenced as the approximate number of relationships a person can maintain Award duration for Steve Jones: 50 years - He notes having been at UCL for 50 years University honorary degrees: 4 - Steve Jones says all four Welsh universities later gave him honorary degrees

Pivotal Quotes: "I think, personally, a helpful way to think about it is an act that's kind or compassionate towards somebody else for which you don't expect anything in return." — Maddie Wilkes: Her definition of altruism during the opening discussion "We wouldn't have civilisation, it would be impossible, without pure altruism." — Steve Jones: His argument that human societies require more than kin-based reciprocity "If you don't tell anybody about it then it doesn't become a social norm." — Maddie Wilkes: Her explanation of why visible generosity can encourage more altruism

Implications: The episode suggests altruism is a real but mixed human capacity shaped by empathy, evolution, and social norms. For listeners and institutions, the lesson is to make helping easier, visible, and culturally normal rather than relying on guilt or incentives alone.

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About The Infinite Monkey Cage

Professor Brian Cox and Robin Ince host a witty, irreverent look at the world through scientists’ eyes. Joined by a panel of scientists, experts and celebrity science enthusiasts they investigate life, the universe and everything in between on The Infinite Monkey Cage from the BBC. From the smallest building blocks of life to the furthest stars, the curious monkeys pull apart the latest science to reveal fascinating and often bizarre insights into the world around us and what lies beyond. Can...

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