The process of the decrease of the surface area due to crystallite growth in ceria at 943 K is described by a kinetic model involving oxygen and cerium diffusion. The experimentally found variations in the rate of crystallite growth are reported as a function of the content ( 10% cat.) of dopants, which are the cations Ca<sup>2+</sup>, Mg<sup>2+</sup>, Al<sup>3+</sup>, Y<sup>3+</sup>, Sc<sup>3+</sup>, Al<sup>3+</sup>, Th<sup>4+</sup>, Zr<sup>4+</sup> and Si<sup>4+</sup>. The variations are discussed on the basis of the diffusion of cerium vacancies as the rate-limiting step, and on the basis of calculated expressions of the concentrations of oxygen vacancies, electrons and cerium vacancies v<sub>s</sub>. the oxygen partial pressure and the dopant content. For cations that are smaller than Ce<sup>4+</sup>, the comparison between the experimental and theoretical rates asserts the validity of the model and allows the prediction of the efficiency of a cation to stabilize the surface area, from its associations with oxygen vacancies and with the electron-bearing species, Ce′<sub>Ce</sub>.