DRD2 and Anxiety: In the analysis based on each polymorphism, one-way ANCOVA showed significant difference in the score for State Anxiety according to the genotype of the -141C Ins/Del polymorphism in the DRD2 gene (F = 3.53, df = 2, p = 0.031); That for Trait Anxiety, according to the genotype of the Ser311Cys polymorphism in the DRD2 gene or the PstI site polymorphism in the TH gene (F = 3.96, df = 2, p = 0.048 and F = 3.25, df = 2, p = 0.041, respectively).