In the countries in question, during the period in question, there is little reason to think that reporting rates went down; indeed, there were quite a lot of efforts at increasing awareness and encouraging reporting which seem to be widely regarded to have had some success. I expect that is why Diamond’s critics have generally not tried to use this approach to criticize his results; certainly I am not aware of any evidence in favor of this explanation.
In the countries in question, during the period in question, there is little reason to think that reporting rates went down; indeed, there were quite a lot of efforts at increasing awareness and encouraging reporting which seem to be widely regarded to have had some success. I expect that is why Diamond’s critics have generally not tried to use this approach to criticize his results; certainly I am not aware of any evidence in favor of this explanation.