Main samples general table
| Publication | Definition | Sample size | Age in years (SD) | Males (%) | Right handed (%) | Years of education (SD) |
| Asami 2009... | Individuals with PD | 24 | 37.03 (10.20) | 9 (38%) | 24 (100%) | 14.35 (2.05) |
| Carmona 2007... | Individuals with OCD | 18 | 12.86 (2.76) | 13 (72%) | 15 (83%) | N/A |
| Carrion 2009... | Individuals with PTSD | 19 | 11.50 (3.70) | 11 (58%) | 14 (74%) | N/A |
| Chen 2006... | Individuals with PTSD | 12 | 34.56 (4.91) | 4 (33%) | 12 (100%) | 10.21 (1.36) |
| Christian 20... | Individuals with OCD | 21 | 38.00 (9.60) | 15 (71%) | 14 (67%) | 14.60 (1.70) |
| Corbo 2005... | Individuals with PTSD | 14 | 33.36 (12.06) | 6 (43%) | 11 (79%) | N/A |
| Gilbert 2008... | Individuals with OCD | 25 | 37.50 (10.70) | 13 (52%) | N/A | N/A |
| Gilbert 2008... | Individuals with OCD | 10 | 12.90 (2.70) | 6 (60%) | 10 (100%) | N/A |
| Hakamata 200... | Individuals with PTSD | 14 | 45.60 (6.20) | 0 (0%) | 14 (100%) | 13.90 (1.50) |
| Hayano 2009... | Individuals with PD | 27 | 38.20 (9.90) | 10 (37%) | 27 (100%) | 14.00 (2.60) |
| Kasai 2008... | Individuals with PTSD | 18 | 52.80 (3.40) | 18 (100%) | N/A | 13.50 (2.60) |
| Kim 2001... | Individuals with OCD | 25 | 27.40 (7.00) | 17 (68%) | 24 (96%) | 14.20 (2.20) |
| Koprivova 20... | Individuals with OCD | 14 | 28.60 (6.10) | 5 (36%) | 14 (100%) | 14.36 (2.90) |
| Lazaro 2009... | Individuals with OCD | 15 | 13.70 (2.50) | 8 (53%) | 15 (100%) | N/A |
| Massana 2003... | Individuals with PD | 18 | 36.80 (11.30) | 7 (39%) | 18 (100%) | N/A |
| Milham 2005... | Individuals with anxiety disorders | 17 | 12.90 (2.30) | 8 (47%) | N/A | N/A |
| Pujol 2004... | Individuals with OCD | 72 | 29.80 (10.50) | 40 (56%) | 61 (85%) | 13.20 (3.60) |
| Riffkin 2005... | Individuals with OCD | 18 | 36.14 (12.99) | 8 (44%) | 17 (94%) | 12.08 (2.96) |
| Soriano-Mas ... | Individuals with OCD (2nd sample) | 30 | 31.90 (9.30) | 21 (70%) | 28 (93%) | 12.20 (2.90) |
| Szeszko 2008... | Individuals with OCD | 37 | 13.00 (2.70) | 14 (38%) | 21 (57%) | N/A |
| Uchida 2008... | Individuals with PD | 19 | 37.05 (9.75) | 3 (16%) | 18 (95%) | N/A |
| Valente 2005... | Individuals with OCD | 19 | 32.70 (8.80) | 10 (53%) | 17 (89%) | 11.68 (1.02) |
| van den Heuv... | Individuals with OCD | 55 | 33.70 (9.19) | 16 (29%) | 49 (89%) | N/A |
| Yamasue 2003... | Individuals with PTSD | 9 | 44.60 (16.00) | 5 (56%) | 9 (100%) | 12.80 (2.00) |
| Yoo 2005... | Individuals with PD | 18 | 33.30 (7.10) | 9 (50%) | 18 (100%) | N/A |
| Yoo 2008... | Individuals with OCD | 71 | 26.61 (7.50) | 47 (66%) | 68 (96%) | N/A |