To assess whether these results were influenced by drug dependence reported by 54 of our 96 alcoholics, we reanalyzed the data to include only the 42 ALCs (36 of which had Caine data) with no history of drug (i.e., cocaine, opioid, amphetamine, cannabis) dependence. As was found in the entire ALC group, these analyses revealed a group difference among Caine subgroups on Immediate Memory (F(2,34)=5.69, p=.007) and Delayed Memory (F(2,34)=6.38, p=.004). Specifically, Caine 2+ was impaired compared with Caine 0 and Caine 1 on Immediate Memory and impaired compared with Caine 0 on Delayed Memory. Caine 1 was impaired compared with Caine 0 on Immediate Memory and Delayed Memory. In addition, a group difference was reported on the Upper Motor composite (F=2,34)=3.37, p=.046), with Caine 2+ having lower scores than Caine 1 and Caine 0 (Figure 8).
