Abstract
The effects of T-Group training laboratories held in The Netherlands were assessed, using an open-ended perceived change measure utilised in several previous studies. Dutch participants in these laboratories were shown to have improved more than members of control groups in communication ability, sensitivity, and self-and role-insight. The incidence of changes reported after Dutch laboratories is comparable with that found in studies conducted in the United Kingdom and the United States, although Dutch participants improved more in "active" communication to others while British and American participants improved more on the "receptive" side. Suggestions for improved assessment of laboratory training outcomes are made.