摘要 : Background: It is important to know whether the public opinion on drug policies can be measured in a reliable and valid way. One of the threats to the validity of surveys on attitudes toward drug policies are wording effects, of w... 展开 Background: It is important to know whether the public opinion on drug policies can be measured in a reliable and valid way. One of the threats to the validity of surveys on attitudes toward drug policies are wording effects, of which the most well-known is the forbid-allow asymmetry, i.e., people are often more willing to not allow something than to forbid it. The aim of the present study was to estimate the size of the allow-forbid asymmetry when measuring attitudes toward drug policy issues in the Norwegian adult population. 收起