Complex sentence: Early work in this field included the post-World War II use of experimental, non-narrative films to calm veterans suffering from shell shock, and the 1970s saw boys in a group creating short films together to foster group cohesion, mastery skills, and better communication.
Split into simpler sentences: Early work in this field included the post-World War II use of experimental, non-narrative films to calm veterans suffering from shell shock. The 1970s saw boys in a group creating short films together to foster group cohesion, mastery skills, and better communication.