Table 4.

Factor loadings, eigenvalues and variance explained for the best fit, five factor model

	Factor 1	Factor 2	Factor 3	Factor 4	Factor 5
	Taboo	Contamination/cleaning	Doubts	Rituals/superstition	Hoarding/symmetry
Forbidden/perverse thoughts, images, impulses	0.88	0.10	0.02	0.10	0.00
Content involves children on incest	0.84	0.15	0.03	0.04	−0.09
Sexual behavior towards others	0.82	0.14	0.07	0.22	0.12
Obsessions involving homosexuality	0.81	0.17	0.00	0.21	−0.10
Violent or horrific images	0.70	0.09	0.17	0.17	0.11
Fear will act on unwanted impulses	0.70	0.00	0.38	0.05	0.14
Fear of blurting obscenities/insults	0.66	0.08	0.31	0.00	0.21
Fear will steal things	0.62	0.27	0.27	0.09	0.38
Fear of doing something embarrassing	0.60	0.12	0.25	0.08	0.38
Fear might harm self	0.58	0.09	0.20	0.26	0.10
Concern with sacrilege/blasphemy	0.56	0.20	0.17	0.26	0.01
Intrusive (nonviolent) images	0.52	0.14	0.01	0.41	0.12
Concern with right/wrong, morality	0.48	0.14	0.30	0.28	0.10
Concern with dirt or germs	0.10	0.92	0.13	0.03	0.06
Excessive/ritualized hand washing	−0.04	0.88	0.15	0.16	0.01
Other measures to prevent/remove contaminants	0.12	0.81	0.10	0.19	0.03
Concerns with bodily secretions	0.27	0.78	0.16	0.08	0.01
Cleaning household items/objects	−0.04	0.74	0.06	0.15	0.26
Excessive showering, grooming	−0.03	0.73	0.02	0.25	0.24
Excessive concern with animals	0.23	0.73	0.10	0.10	0.17
Bothered by sticky substances	0.13	0.72	0.02	0.19	0.19
Concern with household cleaners	0.20	0.70	0.21	0.14	0.17
Concern with environmental contaminants	0.26	0.66	0.24	0.12	0.00
Concerned will get ill because of contaminant	0.26	0.62	0.33	0.12	−0.02
Concern about contaminants	0.02	0.57	−0.20	−0.07	0.17
Checking that did not harm others	0.32	0.10	0.81	0.12	−0.02
Fear will be responsible for something terrible happening	0.19	0.10	0.76	0.15	0.08
Fear might harm others	0.37	0.20	0.73	0.05	0.09
Checking that nothing terrible did/will happen	0.25	0.13	0.72	0.27	0.06
Checking locks, stoves, appliances	−0.19	0.09	0.63	0.08	0.30
Checking that did not make mistake	0.06	0.16	0.60	0.15	0.44
Fear might harm others because not careful enough	0.59	−0.02	0.59	0.00	0.03
Checking did not harm self	0.37	0.27	0.53	0.25	0.15
Concerned will make others ill	0.29	0.49	0.51	0.10	−0.06
Superstitious behaviors	0.20	0.20	0.14	0.76	0.08
Lucky/unlucky numbers	0.18	0.11	0.07	0.73	0.16
Superstitious fears	0.21	0.17	0.17	0.73	−0.02
Need to repeat routine activities	0.00	0.05	0.11	0.69	0.28
Colors with special significance	0.19	0.23	0.11	0.60	0.11
Counting compulsions	0.05	0.08	0.11	0.52	0.42
Ritualized eating behaviors	0.21	0.23	−0.02	0.48	0.33
Mental rituals	0.34	0.05	0.13	0.45	0.20
Measures (not checking) to prevent harm or terrible consequences	0.32	0.13	0.39	0.43	−0.04
Ordering/arranging compulsions	0.00	0.18	−0.03	0.27	0.71
Hoarding obsesions	0.25	0.17	0.04	0.12	0.63
Symmetry obsessions	−0.03	0.18	−0.07	0.22	0.62
Hoarding compulsions	0.20	0.14	0.06	0.16	0.62
Excessive listmaking	−0.09	−0.06	0.11	−0.12	0.59
Fear of losing things	0.18	0.12	0.37	0.17	0.58
Re-reading, re-writing	0.08	0.13	0.19	0.45	0.49
Need to know, remember	0.34	0.10	0.15	0.30	0.46
Fear of not saying the right thing	0.27	0.18	0.26	0.23	0.42
Cronbach’s alpha	0.85	0.87	0.81	0.74	0.73
Eigenvalue	17.5	5.2	3.9	2.9	2.1
Variance explained (%)	0.32	0.10	0.07	0.05	0.04
Cumulative variance explained (%)	0.32	0.42	0.49	0.55	0.58

Numbers depicted in bold indicate items with factor loadings >0.4 which were included in the corresponding factor in the calculation of the mean score per items for this factor