This proceedings document presents the texts or summaries of 52 papers given at a 1992 conference on Fragile X syndrome. Preliminary information includes names and institutional affiliations of conference faculty, information about the National Fragile X Foundation, awards presented at the conference, and a list of resource centers (by state). Papers are organized into the following four categories: (1) physical, cognitive, and behavioral phenotype and medical follow up (e.g., medical management, physical features, seizures, oculovisual dysfunction, learning disability, socioemotional characteristics of adult mentally retarded men with Fragile X syndrome, behavioral assessments, and psychosis); (2) educational and behavioral interventions (e.g., the Fragile X Educational Assistance Program, combined occupational and speech therapy, assistive technology, psychotherapy, vocational training, and facilitating a parent/family support group; (3) cytogenetic and molecular diagnostic testing (e.g., molecular genetics, the genetic lesion causing the disorder, genetic counseling, prenatal diagnosis, cytogenetics, prevalence of chromosomal abnormalities, and carrier testing of persons with suggestive family histories); and (4) social concerns (screening, economic impact of the Fragile X syndrome in Colorado, and ethical issues in the provision of genetic services). Papers include references. (DB)