Chapter 6 Adolescent Reasoning and Rationality
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Adolescents (ages 13–19 years) use forms of reasoning and show levels of rationality not seen in children under the age of 10 years. Specifically, research shows qualitative progress during preadolescence (ages 10–12 years) to more advanced forms and levels of logical reasoning, hypothetical reasoning, metalogical understanding, epistemic cognition, scientific reasoning, argumentation, perspective taking, and moral rationality. Development often continues across adolescence and much of adulthood, but development beyond ages 12 or 13 years is much less predictable, universal, and age-related than development over the first 12 years. Claims of adolescent irrationality are stereotypes that greatly overstate the difference between adolescents and adults. Claims about the immaturity of adolescent brains fail to acknowledge the historical and cultural construction of adolescence as we know it. I conclude that adolescents are best seen as young adults. Like adults of all ages they fall far short of rational ideals but are capable of developmental progress.