Klaczynski, P.A. (2001) Analytic and Heuristic Processing Influences on Adolescent Reasoning and Decision-Making. Child Development Proposes a two process model for adolescent reasoning- analytic and heuristic Examines reasoning of early adolescents (~12 y.o.) and middle adolescents (~16 y.o.) Uses several tasks including- conditional reasoning, contingency detection, statistical reasoning problems, conjunction problems, ‘gambler’s fallacy’ problems, outcome bias problems, and a hindsight bias problem. Adult normative responses increase with age Results correlated in two clusters, analytic and heuristic Analytic and heuristic reasoning responses were generally not correlated Analytic reasoning seems to change more with age than heuristic reasoning Analytic reasoning is less broadly correlated for early adolescents than for late adolescents Strengths: Large number of tasks Adolescents of different ages Easily comparable to adult-normed data Weaknesses: Cross-sectional No measurement of problem solving time(analytic problem solving takes longer)