Figure 1

Mean Iowa Gambling Task net scores on each of the five blocks. The performance of the tattooed and non-tattooed groups. Performance in IGT block 1, block 2 and block 3 did not differ between the two groups, but the differences between group differences became significant in blocks 4 and 5. The positive net score of the non-tattooed group from block 2 to 5 can be explained by their fast learning in contrast to the tattooed women, who did not improve during the task and exhibited non-optimal outcomes because they failed to correct disadvantageous choices.