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. Author manuscript; available in PMC: 2021 Feb 26.
Published in final edited form as: Psychol Med. 2017 Jun 27;48(2):279–293. doi: 10.1017/S0033291717001672

Table 1.

Factor loadings and internal consistency for OCD exploratory factor model

F1 F2 F3 F4 F5 F6 F7 F8
Doubts/Scrupulosity Symmetry/Exactness Contamination Aggressive urges Fear-of-harm Need for sameness Superstitions Hoarding
Cronbach’s alpha 0.76 0.85 0.76 0.77 0.65 0.60 0.72 0.75
Item
Checks that did not make mistakes 0.81 0.27 0.03 −0.13 −0.10 0.00 −0.03 0.02
Re-reads or re-writes things 0.60 0.50 −0.12 0.01 0.00 −0.01 −0.18 0.04
Checks that did not or will not harm others 0.60 0.00 0.08 0.17 0.04 0.21 0.04 −0.02
Needs to tell, ask, or confess things 0.57 0.05 0.07 0.11 0.12 0.19 −0.01 −0.05
Is excessively concerned with right or wrong (morality) 0.54 0.01 0.16 −0.03 0.05 0.07 0.17 0.01
Is concerned with upsetting thoughts having to do with God, religious teachings or beliefs 0.51 −0.13 0.10 0.16 0.04 −0.19 0.08 0.08
Has mental rituals (other than checking or counting) done intentionally to feel better 0.40 0.12 0.02 0.07 0.05 −0.12 0.24 0.10
Has obsessions about symmetry 0.00 0.83 0.08 0.03 0.02 −0.09 0.02 −0.04
Needs certain things to be symmetrical 0.02 0.78 0.07 0.08 −0.06 −0.04 0.04 −0.09
Often has thoughts about lining things up −0.09 0.78 0.00 −0.01 0.17 0.06 −0.03 0.12
Has ordering or arranging compulsions 0.02 0.75 0.02 0.03 0.05 0.20 0.03 0.05
Has obsessions about exactness 0.25 0.66 −0.02 −0.08 0.09 0.06 0.00 0.07
Needs to have certain things evened-up 0.03 0.61 0.01 0.08 −0.02 −0.39 0.16 −0.06
Often has thoughts about evening things up −0.05 0.61 0.00 0.08 0.02 −0.46 0.14 0.06
Has counting compulsions 0.28 0.48 −0.03 0.01 −0.01 −0.08 0.05 0.03
Needs to repeat routine activities (like going in and out of a doorway or getting up and down from a chair) 0.15 0.43 0.03 0.01 0.09 −0.08 0.15 −0.02
Does other things to prevent or remove contact with contaminants −0.01 0.14 0.82 0.06 −0.01 −0.02 −0.04 −0.06
Is concerned with dirt or germs −0.05 0.15 0.80 0.02 0.09 0.06 0.01 0.01
Is concerned will get ill because of contamination 0.01 −0.07 0.78 −0.08 0.19 −0.07 0.13 −0.01
Is concerned with illness or disease 0.18 −0.08 0.56 −0.03 0.12 −0.02 0.21 0.06
Is concerned or disgusted with bodily waste or secretions (like urine, feces, or saliva) 0.06 0.11 0.56 0.21 −0.01 −0.07 −0.02 0.01
Is excessively concerned with environmental contaminants (like asbestos, radiation, or toxic waste) 0.31 −0.03 0.55 0.02 −0.09 −0.17 0.09 0.05
Is excessively concerned with animals (like insects) 0.00 0.16 0.49 −0.01 −0.06 0.08 −0.03 0.24
Is bothered by sticky substances or residues 0.02 0.24 0.48 0.01 0.05 0.04 −0.12 −0.02
Has experienced unreasonable urges to be destructive −0.12 0.09 0.05 0.87 −0.02 0.04 −0.05 0.08
Has experienced urges to injure or mutilate others −0.18 −0.08 0.01 0.84 0.04 0.21 0.02 0.06
Has experienced unreasonable urges to offend others −0.06 −0.02 0.04 0.82 −0.03 0.09 0.03 0.07
Has experienced unreasonable urges to injure self 0.04 0.01 0.04 0.67 0.18 −0.14 −0.05 0.01
Has experienced unreasonable urges to do sudden and reckless things (behaviors) 0.03 0.16 −0.05 0.64 0.05 −0.05 0.06 −0.06
Fears acting on an unwanted impulse 0.18 0.09 −0.02 0.53 0.26 −0.06 −0.02 −0.04
Has experienced a strong need to explore surroundings 0.05 0.03 −0.10 0.41 −0.06 0.11 0.04 0.38
Fears blurting out obscenities 0.18 0.06 −0.04 0.41 0.32 −0.06 −0.11 −0.03
Fears will steal things 0.04 −0.20 0.05 0.40 0.06 −0.23 0.09 0.32
Fears that might harm self −0.07 0.04 0.22 0.01 0.83 0.03 0.02 −0.01
Fears that might harm other people 0.12 −0.03 −0.02 0.01 0.74 0.01 0.15 0.07
Takes measures (other than checking) to prevent harm to self or others, or terrible consequences 0.32 0.05 0.26 0.02 0.53 0.04 −0.05 −0.05
Needs to touch, tap, or rub things 0.08 0.30 0.04 0.05 0.41 −0.14 0.02 0.04
Has to keep a strict timetable or routine for doing ordinary activities −0.03 0.26 0.10 −0.01 0.00 0.51 0.37 0.10
Has to do things the same way every time 0.02 0.41 −0.01 0.01 0.01 0.47 0.33 0.09
Has unreasonable, silly thoughts that may influence the outcome of some events if does certain things 0.02 −0.02 −0.07 0.05 0.27 0.05 0.84 −0.01
Has silly thoughts that can influence the outcome of some events if does certain things 0.00 0.00 0.01 0.03 0.23 −0.01 0.82 −0.16
Has superstitious fears 0.05 0.06 0.16 0.02 −0.05 −0.26 0.64 0.04
Has superstitious behaviors −0.03 0.11 0.10 0.02 0.06 −0.23 0.54 0.07
Has colors with special significance 0.07 0.03 −0.02 0.20 −0.04 −0.05 0.50 0.05
Has lucky or unlucky numbers 0.00 0.19 0.12 −0.07 0.03 −0.21 0.44 0.16
Has obsessions about hoarding or saving things 0.04 0.01 0.00 0.04 0.01 0.02 0.01 0.93
Has compulsions to hoard or collect things 0.00 0.07 0.03 0.06 −0.02 0.01 −0.09 0.90
Fears losing things 0.22 0.08 0.12 0.08 0.03 −0.02 0.12 0.41

Items that loaded on 2 latent factors ≥0.40 were assigned to the factor with the higher loading.