Tribes of Trust or Distrust, "Attitude Roots" and Encouraging Scientific Participation in the Tobacco Harm-Reduction Debate.

Implications This commentary provides an analysis of non-scientific influences on the tobacco harm reduction debate. It makes use of the "attitude roots" model and the issue of misplace trust and distrust. Greater participation in the debate by experts is encouraged, along with efforts to minimize the effects of non-scientific, biasing effects on judgments.