Members of closed groups tend to share details of their successes and failures more freely than in open groups, making each closed group a great learning venue. (sheerhubris.com)
This is particularly true for open groups that don't enforce membership guidelines. (elearningindustry.com)
Therapy groups include between 6 - 12 participants and are run as open groups with weekly evening meetings as scheduled. (psychologyspecialistsme.com)