ROCD related measures
The Relationship Obsessive-Compulsive Inventory (ROCI; Doron et al., 2012) is a self-report measure of obsessions and compulsions centered on one's romantic relationship. The scale includes 12 items loading on three relational dimensions: feelings towards one’s partner (e.g., "I continuously reassess whether I really love my partner"), one’s perception of partner's feelings (e.g., "I continuously doubt my partner's love for me"), and one’s appraisal of the "rightness" of the relationship (e.g., "I check and recheck whether my relationship feels right"). Participants rate the extent to which such thoughts and behaviors described their experiences in intimate relationships on a 5-point scale ranging from 0 (not at all) to 4 (very much). All subscales, as well as the total score including all 12 items, have been shown to relate to measures of OCD symptoms, measures of anxiety, depression and stress, and relationship measures (Doron et al., 2012). The internal consistencies of the subscales in our sample (Cronbach's alphas) ranged from .84 to .89. The internal consistency of the entire scale was .93 and its test-retest (9 weeks) reliability was .69.
2. The Partner Related Obsessive Compulsive Symptom Inventory (PROCSI):
The Partner-Related Obsessive-Compulsive Symptom Inventory (PROCSI; Doron et al., 2012) is a self-report measure of obsessions (i.e., doubts and preoccupation) and compulsion (i.e., checking) relating to one's partner's perceived flaws in six domains: physical appearance, sociability, morality, emotional stability, intelligence and competence. Findings indicated that the PROCSI can be coded as a six-factor measure or a one global-factor measure. Participants rate the extent to which such thoughts and behaviors describe their experiences in intimate relationships on a 5-point scale ranging from 0 (not at all) to 4 (very much). All subscales, as well as the total score including all 24 items, have been shown to relate to measures of OCD symptoms, measures of anxiety, depression and stress, and relationship measures (Doron et al., 2012). The internal consistencies of the subscales in our sample (Cronbach's alphas) ranged from .83 to .87. The internal consistency of the entire scale was .95 and the test-retest (9 weeks) reliability .77.
Other measures
The short form of the Obsessive Beliefs Questionnaire (Moulding et al., 2011) is an abbreviated version of the 44-item Obsessive Beliefs Questionnaire-Revised (OCCWG, 2005), a self-report measure of pan-situational cognitions associated with OCD, which was developed collaboratively by many of the prominent cognitive researchers of OCD. The 20-item OBQ loads on four domains represented in four subscales: (1) Responsibility, consisting of 5 items concerning the responsibility for bad things happening (e.g., " Even if harm is very unlikely, I should try to prevent it at any cost"); (2) Threat Overestimation, consisting of 5 items about preventing harm from happening to oneself or others, (e.g., "If I do not take extra precautions, I am more likely than others to have or cause a serious disaster"); (3) Perfectionism/uncertainty, consisting of 5 items reflecting high standards, rigidity, concern over mistakes and feelings of uncertainty (e.g., "In order to be a worthwhile person, I must be perfect at everything I do"); and (4) Importance/Control of thoughts, consisting of 5 items concerning the consequences of having intrusive distressing thoughts and the need to rid oneself of intrusive thoughts (e.g., "For me, having bad urges is as bad as actually carrying them out"). Participants rate all items on a 7-point scale ranging from 1 (disagree very much) to 7 (agree very much). All subscales of the 44-item OBQ have been shown to relate strongly to OCD-symptom measures, as well as to measures of anxiety, depression and worry (OCCWG, 2005; Tolin, Worhunsky, & Maltby, 2006). The internal consistencies of the subscales in several samples (Cronbach's alphas) ranged from .78 to .82. The internal consistency of the scale as a whole was .91(Moulding et al., 2011).