Abstract
Mental health conditions research often relies on reductionist cultural assumptions about the population studied and instruments validated from majority populations. In exhaustively reviewing the limited body of Amish mental health conditions research, we find that studies are well-executed by methodological protocols but that findings are inconsistent or limited in generalizability, instrument validity remains contested, and study investigation into Amish cultural and religious dynamics is limited. A case study from a sizeable Amish community in Ohio illustrates how various ideologies-notably old Amish religious theology, the scientific-psychological, and the Evangelical Protestant-have generated population-internal controversies among the Amish over defining and treating mental health conditions, suggesting that mental health conditions research and diagnosis of ethnic religious adherents should better account for internal cultural-religious dynamics. In order to make some assertions about how Amish culture and religion impacts mental health conditions, future research should include pre-study investigations into the targeted population's cultural and religious dynamics, consist of more nuanced case reports from therapists and psychiatrists, and include replication studies at different times and places, with deliberate attention to contextual factors.