The ability to discriminate kin from nonkin is critical for the evolution of kin-based sociality. Black rock skinks, Egernia saxatilis, are viviparous lizards that typically live in "nuclear families" consisting of an adult male, adult female, and one or more cohorts of juveniles. Laboratory...

Intro -- CONTENTS -- PREFACE -- WHAT IS ECONOMICS? -- HOW DO ECONOMIC SYSTEMS WORK? -- HOW ARE PRICES SET IN THE U.S. ECONOMY? -- WHY DO CONSUMERS BEHAVE AS THEY DO? -- HOW ARE GOODS AND SERVICES PRODUCED? -- HOW ARE BUSINESSES ORGANIZED? -- HOW DO BUSINESSES COMPETE? -- WHY IS MONEY USED IN THE...