A Norwegian study of 341 young immigrants from different ethnic groups looked into their mental-health problems to see which groups were most vulnerable and what the risk factors were. The immigrants came from Iran, Somalia, Sri Lanka and Vietnam. The Somalis and Tamils (from Sri Lanka) had less problems than the Iranians and Vietnamese. The most important factors in whether the youngsters experienced problems were school-related problems, self-efficacy and intergenerational conflicts.
Oppedal, Brit - Psychosocial profiles as mediators of variation in internalizing problems among young immigrants with origins in countries of war and internal conflict European Journal of Developmental Psychology March 2008, 5(2), 210-234