2008n-543 adolescent child communitydevelopment counseling familysocialwork greatbritain greatbritaincommunitywork group groupcounseling groupprocesses grouppsychotherapy grouprelationstraining groupworkineducation handbooks hv45n8741988 intergrouprelations mentaldisorders methodology methods physiology psychotherapy reference research servicesocialauxadolescents socialcasework socialchange socialgroups socialsciences socialwork socialworkwithchildren socialworkwithteenagers socialworkwithyouth studyandteaching task-centeredsocialwork therapy unitedstates wa320m245g1997