This research details the changing ways in which young people of different ages differently warrant the conviction that, notwithstanding evidence of good and bad behaviours, selves can be understood as unified across the various roles and contexts that they occupy. Canadian adolescents and young adults were asked to explain the apparent disunity…

Giyoo Hatano was an international scholar--an adaptive expert himself. His creative methodologies and theoretical insights have enriched the work of researchers in many countries. How Hatano lived his life and treated others provides enriching insights as well. In this essay, we focus on "adaptive expertise", one of Giyoo Hatano's major…

To bring out Giyoo Hatano's contributions to the understanding of culture and cognitive development, we note first his special style--thoughtful, inventive, and always focused on central issues and on combining theory with data--and then, for three areas, some of the conceptual advances he proposed. The areas have to do with ties between cognitive…