Picture Source: http://www.amsciepub.com/doi/abs/10.2466/pms.1918.104.22.168
Performance of criminals and neurotics on the Kahn test of symbol arrangement.
The diagnostic power of the Kahn Test of Symbol Arrangement (KTSA) in differentiating between criminals and neurotics was examined. Three groups of males–30 incarcerated criminal recidivists, 30 neurotics, and 30 trainees in a work-placement bureau–were given the KTSA and an intelligence test. The groups were equated for age and socioeconomic status. Qualitative differences between the symbol-patterns of the criminals and the neurotics were noted. The KTSA scores of the two groups differed from those of the control group but not from each other.
Abstract Source: http://www.ncbi.nlm.nih.gov/pubmed/887361