A study compared test scores obtained by adult learners taught oral, written, and/or interpersonal communication skills by four different methods over two different lengths of time. The learners and those in a control group, which was not taught at all, were 171 bank employees. The teaching methods were executive coaching (one tutor and one learner), small group (1 teacher with 2-3 learners), computer-based training (CBT) (1 learner with a computer and instructional software), and classroom (1 teacher with 16 learners). Learners were further divided into 2 time blocks (10 hours of training or 20 hours of training) delivered at the rate of 1 hour per week. The Nelson-Denny Reading test and the Dailey Business English test were used pre- and post- training. Manova and post-hoc procedures indicated that the executive coaching methodology produced five scores significantly higher than the small group and classroom methodologies. One score was higher for the small group method over the classroom treatment. All results were at the .01 level of significance. No significant results were found for the CBT or classroom treatment groups. Results imply that, of the four teaching methods studied, the best one to use would be the executive coaching methodology. (YLB)