There is a growing need for multicultural collaboration in child mental health services, training, and research. To facilitate such collaboration, this study tested the 8-syndrome structure of the Child Behavior Checklist (CBCL) in 30 societies. Parents' CBCL ratings of 58,051 6- to 18-year-olds were subjected to confirmatory factor analyses, which were conducted separately for each society. Societies represented Asia; Africa; Australia; the Caribbean; Eastern, Western, Southern, and Northern Europe; the Middle East; and North America. Fit indices strongly supported the correlated 8-syndrome structure in each of 30 societies. The results support use of the syndromes in diverse societies. ; Masha Y. Ivanova; Thomas M. Achenbach; Levent Dumenci; Leslie A. Rescorla; Fredrik Almqvist; Sheila Weintraub; Niels Bilenberg; Hector Bird; Wei J. Chen; Anca Dobrean; Manfred Dpfner; Nese Erol; Eric Fombonne; Antnio Castro Fonseca; Alessandra Frigerio; Hans Grietens; Helga Hannesdttir; Yasuko Kanbayashi; Michael Lambert; Bo Larsson; Patrick Leung; Xianchen Liu; Asghar Minaei; Mesfin S. Mulatu; Torunn S. Novik; Kyung Ja Oh; Alexandra Roussos; Michael Sawyer; Zeynep Simsek; Hans-Christoph Steinhausen; Christa Winkler Metzke; Tomasz Wolanczyk; Hao-Jan Yang; Nelly Zilber; Rita Zukauskiene; Frank C. Verhulst