1. On the psychology of unwanted pregnancy;Adler,1980
2. Petersen, A. C. Teenage pregnancy. Paper presented at the Pediatric Research Conference, Michael Reese Hospital and Medical Center, December, 1978.
3. Wilen, J. B., & Petersen, A. C. Young adolescents' responses to the timing of pubertal changes. Paper presented at the annual convention of the American Psychological Association, Montreal, Canada, September 1980.
4. Jenkins, R., & Westney, O. Sociosexual development in black preadolescents. Paper presented in the symposium “Developmental Approaches to Population Research: Issues, Methods, and Problems” at the annual convention of the American Psychological Association, Montreal, Canada, September, 1980.
5. Cvetkovich, G. Towards a theory of psychosocial development and fertility control. Paper presented in the symposium “Developmental Approaches to Population Research: Issues, Methods, and Problems” at the annual convention of the American Psychological Association, Montreal, Canada, September, 1980.