The TN0 Crash-Safety Research Centre started a research programme to establish sets of requirements for basic child dummy design characteristics. However, there is only very limited data available on child responses to impact loading and, therefore, most of the response corridors were obtained by scaling the responses of adults. In previous studies, the “Kroell thoracic response corridors” were scaled on the basis of the masses and the rib cage stiffness only. Scaling by this method assumes that the corridor shape is similar and, therefore, implicitly assumes that the thoracic damping of adults is equivalent to that of children. In the present paper a general scaling method is presented and applied to Lobdell’s mathematical thoracic response model to predict the thoracic response of children. To derive the scaled thoracic response of a child, the parameters of the model are scaled while using scaling procedures for mass, thoracic stiffness and damping. The thoracic response of the scaled Lobdell model is compared with the scaled “Kroell thoracic response corridors”. Even with uncertainties, such as the high dynamic stiffness of the Lobdell model and the current lack of child Post Mortem Human Subject validations, it is believed that a more realistic child thoracic response is derived.