Whether adolescent LR has any firm correspondence with the low LR link to AD outcomes is unknown. LR as discussed in earlier sections is generally assessed in young adulthood. No prospective, laboratory-based alcohol challenge studies are likely to be done with periadolescents for ethical reasons, which limits the opportunity to pursue any links. However, the importance of early self-exposure to alcohol is unquestioned, and this is an area where continued attention should be directed. For example, it may be possible to ascertain useful information based on self-reports or by employing real-time self-recording measures of actual adolescent drinking.