Introduction / Sidney Strauss -- U-shaped behavioral growth in ratio comparisons / Ruth Stavy ... [et al.] -- U-shaped curves / D. Dean Richards and Robert S. Siegler -- Non-monotone assessment of monotone development / David Klahr -- An information processing viewpoint on nonmonotone assessment of monotone development / J.G. Wallace -- Starting to talk worse / Melissa Bowerman -- First intimations of artistry / Howard Gardner and Ellen Winner -- Face perception--anomolies of development / Susan Carey -- Revising children's drawings of simple rhythms / Jeanne Bamberger -- Intuitive thinking / Donald A. Schon -- Non-monotonic developmental trends in social cognition / Walter Emmerich -- Studies in the development of cognitive processes / Jacques Mehler.