... Nevertheless, important indications of evidence for the effectiveness of residential treatment can be gleaned from evaluations and quasi-experimental designs. For example, studies suggest that residential treatment reduces adolescent symptoms and improves their psychosocial functioning (Bean, White, Neagle, & Lake, 2005;Black & Chung, 2014;Caldwell & Van Rybroek, 2005;Fishman, Clemmey, & Adger, 2003;Grella, Hser, Joshi, & Rounds-Bryant, 2001;Hair, 2005;Morral, McCaffrey, & Ridgeway, 2004;Winters, Stinchfield, Opland, Weller, & Latimer, 2000). This appears especially true for youth who complete treatment (Jainchill, Hawke, DeLeon, & Yagelka, 2000) and participate in aftercare (Godley, Godley, Dennis, Funk, & Passetti, 2006). ...