Based on the concept of a mathematical manifold, the model developed for this study was designed to measure and provide insights into the interaction of gender and access to computers among Canadian adolescents, as well as the multiple situational and personal variables which can constrain or facilitate computer access for the adolescent. The model was tested on data gathered by questionnaire from 2,818 Canadian 11th grade students representing urban areas in all 10 Canadian provinces. The general manifold model was adapted to predict access in three different usage categories--recreational use, nonrecreational home use, and school use--and each of these adaptations was tested on the male and female data separately. Subsequent adaptations of the model to reflect hypotheses about gender differences in access patterns were also tested with the male and female data. The full models and the male and female models provided reasonable to strong fits for the data. These results offer insights into patterns of computer use by adolescents and support the viability of the manifold model as a theoretical framework for further research. Data tables and diagrams of the models are appended. (25 references) (Author/MES)