Partial and methodologically questionable replications of the Luria experiments on the child's verbal regulation of his motor behavior have led to results and conclusions contradictory to Luria's findings. An error in the methodology of two of these replications is discussed as the reason for a new investigation of Luria's hypothesis. Several experiments performed with children between 3 and 8 years of age are reported here. In general, data tend to support the hypothesis of a regulatory effect of the rhythmic aspect of speech over the simultaneous motor behavior of children from 3 1/2 years of age on. However, the results did not confirm predictions derived from the part of Luria's hypothesis concerning the possible regulatory function of the meaningful aspect of speech. (Author/ED)