The process of assertive training is described with emphasis placed on its applicability to problems in female assertiveness. Male and female members of four assertive training groups were compared on the Wolpe-Lazarus assertive inventory. Male members obtained a significantly lower score than female members i.e., men reported themselves as significantly more assertive than women. Differences in specific areas of assertive behavior emerged between the sexes. Women were less able than men to set limits for themselves or express negative feelings. Men, on the other hand, had difficulty in expressing positive feelings. By focusing on nonverbal behavior, verbal behavior and communication style, autonomic response and cognitive and attitudinal variables, the study used assertive training to change these patterns of female expression. (Author/LAA)