Health beliefs interviews were conducted with 250 children aged 6-17 years. A factor analysis of the items resulted in six correlated factors which were interpreted as 1) specific health concerns, 2) general health concerns, 3) perceived parental concern, 4) perceived general susceptibility, 5) perceived susceptibility to specific conditions, and 6) perceived seriousness of and susceptibility to disease. Factor scores were computed and two-way analyses of variance (by age and sex of child) were conducted on six sets of factor scores. No significant sex differences or sex by age interaction effects were noted. Younger children scored significantly higher on "specific health concerns" and "perceived general susceptibility," while older children scored significantly higher on "perceived parental concern." Tests of differences among variances showed a tendency for the variability to be greater among younger children. The results are interpreted as providing partial support for a model of children's health beliefs and as a basis for further operationalization of concepts which are central to an understanding of motivated health behavior. Implications for practice are discussed.