Table 2.
Cronbach’s Alpha and Factor Loadings for the 4-Factor Model
| Factor 1 Tics |
Factor 2 OCS |
Factor 3 Disinhibited |
Factor 4 Symmetry |
||
|---|---|---|---|---|---|
| Cronbach’s alpha | 0.88 | 0.92 | 0.77 | 0.87 | |
|
| |||||
| Factor loadings | |||||
| TS | Lift chin | 0.67 | 0.02 | −0.09 | −0.06 |
| TS | Knee-bending | 0.66 | 0.02 | 0.07 | 0.14 |
| TS | Teeth bearing | 0.63 | 0.10 | 0.07 | −0.17 |
| TS | Touch chin to shoulder | 0.60 | 0.04 | −0.08 | −0.08 |
| TS | Tensing buttocks | 0.58 | 0.02 | −0.16 | 0.18 |
| TS | Deep knee bending | 0.57 | −0.14 | 0.19 | 0.28 |
| TS | Quick eye turn | 0.56 | 0.13 | −0.07 | −0.04 |
| TS | Tensing abdomen | 0.56 | −0.03 | −0.15 | 0.12 |
| TS | Lip pouting | 0.56 | 0.13 | −0.04 | −0.11 |
| TS | Rolling eyes to one side | 0.55 | 0.02 | −0.10 | −0.01 |
| TS | Broadening nostrils | 0.55 | 0.20 | −0.22 | −0.08 |
| TS | Smiling | 0.54 | 0.07 | 0.03 | −0.04 |
| TS | Opening eyes wide | 0.52 | 0.10 | −0.10 | 0.01 |
| TS | Flexing or extending ankle | 0.52 | 0.12 | −0.13 | 0.07 |
| TS | Kicking | 0.52 | −0.01 | 0.32 | 0.03 |
| TS | Sticking tongue out | 0.51 | 0.06 | 0.24 | −0.13 |
| TS | Shrugging shoulders | 0.51 | 0.00 | 0.00 | −0.07 |
| TS | Nose twitching | 0.50 | 0.06 | −0.18 | −0.06 |
| TS | Squatting | 0.49 | −0.17 | 0.19 | 0.29 |
| TS | Biting tongue | 0.48 | 0.13 | −0.03 | 0.02 |
| TS | Touching | 0.48 | −0.14 | 0.22 | 0.35 |
| TS | Squinting | 0.48 | 0.13 | −0.15 | −0.01 |
| TS | Tapping | 0.48 | −0.07 | 0.12 | 0.26 |
| TS | Jerking shoulder | 0.47 | 0.00 | −0.05 | 0.02 |
| TS | Counting with fingers | 0.46 | 0.02 | 0.03 | 0.20 |
| TS | Bending or gyrating | 0.45 | −0.03 | 0.31 | 0.07 |
| TS | Pulling back pencil | 0.43 | −0.02 | 0.13 | 0.17 |
| TS | Throwing head back | 0.43 | 0.00 | −0.09 | 0.04 |
| TS | Skipping | 0.42 | −0.08 | 0.28 | 0.05 |
| TS | Chewing on lip | 0.42 | 0.15 | −0.04 | −0.11 |
| TS | Unusual postures | 0.42 | −0.03 | 0.28 | 0.09 |
| TS | Slower movements | 0.41 | −0.02 | 0.20 | 0.41 |
| OCD | Needs to touch, tap, or rub things | 0.41 | 0.13 | 0.14 | 0.39 |
| TS | Eye blinking | 0.41 | 0.15 | −0.27 | −0.04 |
| TS | Syllables | 0.40 | −0.16 | 0.40 | 0.05 |
| OCD | Contamination concern | 0.00 | 0.77 | −0.23 | −0.05 |
| OCD | Hoarding obsessions | −0.24 | 0.76 | 0.43 | −0.01 |
| OCD | Illness concern | 0.04 | 0.73 | −0.13 | 0.02 |
| OCD | Hoarding compulsions | −0.21 | 0.70 | 0.42 | −0.03 |
| OCD | Dirt or germ obsessions | −0.04 | 0.70 | −0.16 | 0.08 |
| OCD | Fears harming others if not careful | 0.03 | 0.66 | 0.14 | 0.07 |
| OCD | Fears responsible for something terrible | 0.03 | 0.65 | 0.05 | 0.19 |
| OCD | Thoughts may influence the outcome of some events if does certain things | −0.02 | 0.63 | −0.09 | 0.32 |
| OCD | Checks no self-harm | 0.03 | 0.62 | 0.08 | −0.08 |
| OCD | Fears harming others | 0.08 | 0.62 | 0.01 | 0.09 |
| OCD | Fears losing things | −0.02 | 0.62 | 0.10 | 0.18 |
| OCD | Contamination compulsions | 0.08 | 0.61 | −0.12 | 0.04 |
| OCD | Contamination obsessions | 0.22 | 0.61 | −0.08 | 0.03 |
| OCD | Checks nothing terrible | 0.05 | 0.60 | 0.11 | −0.02 |
| OCD | Fears will steal things | 0.06 | 0.60 | 0.22 | −0.16 |
| OCD | Religious obsessions | 0.06 | 0.60 | 0.03 | 0.06 |
| OCD | Concerned with bodily waste | 0.05 | 0.59 | −0.03 | 0.09 |
| OCD | Morality obsessions | 0.03 | 0.58 | −0.08 | 0.20 |
| OCD | Compulsions to prevent harm | 0.25 | 0.57 | −0.03 | 0.10 |
| OCD | Urges to offend | −0.05 | 0.57 | 0.56 | −0.10 |
| OCD | Checks no harm | 0.07 | 0.57 | 0.08 | 0.12 |
| OCD | Violent obsessions | 0.02 | 0.56 | 0.13 | 0.08 |
| OCD | Fears self-harm | 0.19 | 0.56 | −0.03 | 0.04 |
| OCD | Thoughts can influence the outcome of some events if does certain things | −0.02 | 0.54 | −0.10 | 0.33 |
| OCD | Mental rituals | −0.04 | 0.53 | 0.00 | 0.34 |
| OCD | Fears acting on an unwanted impulse | 0.09 | 0.53 | 0.29 | 0.12 |
| OCD | Self-harm urges | 0.11 | 0.52 | 0.35 | 0.01 |
| OCD | Superstitious fears | 0.02 | 0.50 | −0.14 | 0.35 |
| OCD | Sexual obsessions | 0.13 | 0.49 | 0.18 | 0.14 |
| OCD | Need confess | 0.00 | 0.49 | 0.12 | 0.18 |
| OCD | Animal obsessions | −0.08 | 0.48 | 0.00 | 0.12 |
| OCD | Need to explore surroundings | −0.14 | 0.46 | 0.42 | 0.03 |
| OCD | Concerned with a part of body or appearance | 0.02 | 0.45 | 0.05 | 0.20 |
| OCD | Superstitious behaviors | 0.03 | 0.42 | −0.08 | 0.34 |
| OCD | Urges to do sudden and reckless things | 0.11 | 0.40 | 0.30 | 0.13 |
| TS | Coprolalia | 0.25 | 0.05 | 0.71 | 0.00 |
| TS | Copropraxia | 0.27 | 0.06 | 0.66 | −0.08 |
| TS | Echolalia | 0.25 | −0.10 | 0.56 | 0.23 |
| OCD | Urges to be destructive | 0.02 | 0.51 | 0.55 | −0.02 |
| OCD | Urges to injure or mutilate others | −0.10 | 0.52 | 0.55 | −0.17 |
| TS | Words | 0.31 | 0.04 | 0.54 | 0.05 |
| TS | Palilalia | 0.27 | −0.02 | 0.50 | 0.25 |
| TS | Animal or bird noises | 0.26 | 0.06 | 0.41 | −0.11 |
| OCD | Symmetry obsessions | −0.07 | 0.09 | −0.04 | 0.82 |
| OCD | Needs certain things to be symmetrical | −0.02 | 0.06 | −0.01 | 0.76 |
| OCD | Ordering or arranging compulsions | −0.10 | 0.11 | 0.07 | 0.73 |
| OCD | Needs to have certain things evened-up | 0.08 | 0.06 | −0.05 | 0.73 |
| OCD | Thoughts about evening things up | 0.07 | 0.08 | −0.01 | 0.73 |
| OCD | Thoughts about lining things up | −0.01 | 0.09 | −0.01 | 0.71 |
| OCD | Obsessions about exactness | −0.03 | 0.20 | −0.05 | 0.70 |
| OCD | Re-reads or re-writes things | 0.06 | 0.20 | 0.05 | 0.59 |
| OCD | Needs to repeat routine activities | 0.03 | 0.14 | 0.11 | 0.58 |
| OCD | Counting compulsions | 0.11 | 0.14 | 0.05 | 0.54 |
| OCD | Has to do things the same way every time | −0.11 | 0.22 | 0.21 | 0.47 |
| OCD | Needs to know or remember certain things | 0.08 | 0.36 | 0.05 | 0.44 |
| OCD | Checks that did not make mistakes | 0.05 | 0.40 | −0.09 | 0.43 |
| TS | Writing the same letter or word over and over | 0.20 | 0.04 | 0.03 | 0.42 |
| OCD | Checks things | 0.11 | 0.35 | −0.11 | 0.42 |
Note: Items that loaded on 2 factors were assigned to both factors; primary loadings are in bold, secondary in bold and italics.