The purpose of this study was to test Basil Bernstein's sociolinguistie theories. Based on an interview study of 138 kindergarten children, the data for the most part did not support Bernstein's ideas. Speech style indicators did not cluster into elaborated and restricted variants. Neither social control strategies nor school achievement scores were differentially related to elaborated and restricted variants. There was marginal evidence that some elaborated speech style indicators were related negatively to family size. Finally, children's social perceptions, a measure of elaborated codes at the psychological level, were related positively to their school achievement scores.