One hundred eighty 4-man groups (90 of men and 90 of women) using 3 types of net (All-Channel, Wheel and Circle) under 3 conditions (Planning Period (PP), Rest Period (RP) and Control) were run in a single session with 5 complex problems to determine whether a single 2-minute planning period after solution of the first problem would result in significant improvement in performance on subsequent problems. Results indicate that while there may be a tendency for PP groups (except for Wheel Women) to show an improvement on time and messages, this improvement failed to reach a level of statistical significance. Ratings of their own performance did indicate that PP groups had higher morale at a borderline level of significance. Other results confirm previous reports of the superiority of All-Channel and Circle nets on time and morale, wheels on use of fewer messages to solve problems. Interaction effects for sex and net were significant showing women superior on All-Channel and Circle nets, men on Wheels on time and messages. Women also had significantly higher scores on self-ratings of satisfaction and cooperation. (Author/TA)