Children's ideas, which differ from a scientific view, are termed as alternative conceptions (AC). AC are extremely resistant to change and arise from everyday experience. Investigation of children's AC about weight gain and their ability to discriminate between healthy and unhealthy foods is important, because it can help teachers reduce obesity…

Part 1 of the Report Card presents a league table of child well-being in 29 of the world's advanced economies. Part 2 looks at what children say about their own well-being (including a league table of children's life satisfaction). Part 3 examines changes in child well-being in advanced economies over the first decade of the 2000s, looking at each…