Most importantly, although strong efforts were made to evaluate the effect of age differences between groups statistically, the major limitation of the present study is the significant age difference between groups. In order to counter this limitation, an identical statistical analysis (using mixed- linear model) was performed on a smaller age-matched sample (15 subjects in each group). The results of the present study were replicated. More studies are required with larger age-matched samples to further evaluate these findings. Nevertheless, the findings of the present study shed light on functional aspects of NoGo N2 and indicates possible deficits in alcoholics. The present study was conducted on male samples that may pose a limitation to the generalization of the findings. Gender differences in the characteristics of ERP waveforms have often warranted separate studies in the alcoholism literature. A proper sampling based on gender was not possible due to lower availability of female subjects who meet the inclusion criteria of the present study. More studies are required with representation of both genders and larger samples to evaluate these findings and extend generalizability.
