The factor of timing on intelligible speech among normally-hearing persons was studied to determine some ways in which it differs from the speech of the deaf. Additional data was gathered on the temporal aspects of the speech of deaf and hearing children and hearing adults. The data corroborated earlier studies indicating that (1) deaf speakers tend to speak at a much slower rate than hearing speakers; (2) the difference between the durations of stressed and unstressed syllables is proportionately much smaller for deaf than for hearing speakers; (3) deaf speakers tend to insert more pauses, and pauses of longer duration, within running speech. (SK)