Presents abstracts of research papers discussed at the 17th Annual Meeting of Adolescent Psychiatry held on November 17, 1999 in Fukushima, Japan. 'Importance of image of father in the clinical course of an adolescent case,' by C. Fujita, S. Koyota, T. Ozaki, Y. Nakano and C. Yasutake; 'The turning point for a pair of twin girls,' by M. Nishikawa, K. Goto and R. Kaku.