The finding is important because the medical community suffers from a shortage of cadavers, explains Michel Anteby, an associate professor in the Organizational Behavior Unit at Harvard Business School who cowrote the paper with Filiz Garip of Harvard University, Paul V.

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They eat to the bottom of the bowl or bag if that seems like a logical meal or portion size, a behavior dubbed "unit bias" by academics.

WSJ: Overeating: The Psychology of Small Packages

Those who manage or have any responsibility for the conduct of a group or work unit already know to squash bullying behavior.

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The manager will need to set up firewalls around the sales unit to prevent it being infected by money-driven behavior, unless and until the firm as a whole transitions to customer capitalism and the radical management needed to support it.

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