Relationship of Maudsley Obsessional-Compulsive Inventory Subscales with Negative Priming

The relationship between the 4 subscales (Checking, Cleaning, Doubting, Slowness) and total score of the Maudsley Obsessional-Compulsive Inventory (MOCI) and performance in a negative-priming task and a response-speed task in 102 undergraduates was examined. Only Cleaning subscale performance correlated with magnitude of negative priming. Performance on the Checking, Slowing, and Doubting subscales was not significantly related to the magnitude of negative priming. The not significant correlation between Checking score and negative priming magnitude supports the findings of Maki, O'Neill, and O'Neill (1994), who observed that compulsive checking (of, e.g., whether the stove is turned off) appeared to be unrelated to deficiencies in inhibitory control. The present results are not, however, consistent with the view that obsessive-compulsive characteristics (as measured by the MOCI) result in a disruption in and a reduction of inhibitory control (Enright & Beech, 1993).     

Psychometric analysis of racial differences on the Maudsley Obsessional Compulsive Inventory

Black university students scored significantly higher than White students on the Maudsley Obsessional Compulsive Inventory (MOCI). They tended to endorse more Cleaning and Checking subscale items in the pathological direction. Subsequent analyses examined whether this finding is a reflection of valid group differences in the prevalence of OCD or a psychometric artifact. Structured interviews were conducted to determine the correspondence of MOCI scores with OCD diagnoses. The race difference in endorsement frequency on the MOCI did not extend to OCD diagnoses. The MOCI scores showed modest predictive validity in Whites, but they did not predict interview-based diagnoses in Blacks. Multivariate item response theory was then employed to examine race differences in the Cleaning and Checking subscales. Equivalent item discrimination parameters fit the data for Black and White participants for both subscales. A more restrictive model in which relative item difficulties were also constrained to be equal for Black and White participants did not fit. This interaction between race and item difficulty suggests that the items do not have equivalent psychometric properties in Blacks and Whites.     

Prevalence of DSM-III-R disorders among nonclinical compulsive checkers and noncheckers in a college student sample.

The prevalence of lifetime DSM-III-R disorders was assessed in a sample of 100 college students who were classified as compulsive checkers (n = 50) or noncheckers (n = 50) on the basis of their responses to the Checking subscale of the Maudsley Obsessional-Compulsive Inventory (MOCI). DSM-III-R disorders were assessed on the basis of responses to the Diagnostic Interview Schedule, Version III Revised (DIS-III-R), administered by trained, lay interviewers, blind to Ss' checking status. Checkers, compared to noncheckers, were significantly more likely to meet lifetime diagnostic criteria for Major Depressive Episode, Drug Abuse/Dependence, and Social Phobia. Analysis of a subsample (n = 74) selected on the basis of the consistency of responses to the MOCI across two administrations replicated the above effects, with two exceptions: (1) checkers were more likely to meet criteria for Obsessive Compulsive Disorder than were noncheckers, and (2) for males, but not females, Simple Phobia was more prevalent among checkers than among noncheckers. These findings extend our previous work by demonstrating that 'nonclinical' checking behavior is associated with a broad range of psychological syndromes and may, in fact, be more strongly associated with other disorders than it is with Obsessive Compulsive Disorder in a nonclinical sample.     

Psychometric properties of the Obsessive Compulsive Inventory-Revised among Icelandic college students

In the present study, the psychometric properties of the Obsessive Compulsive Inventory-Revised (OCI-R) (Foa, et al., 2002) were investigated. The OCI-R was administered to a total of 816 Icelandic college students. The Maudsley Obsessive Compulsive Inventory (MOCI) and the Penn State Worry Questionnaire (PSWQ) were administered to a subsample of 304 students, and the PI-WSUR (Padua Inventory Washington State University Revision), the PSWQ and the Multidimensional Perfectionism Scale (MPS) to another subsample of 212 students. Also, 89 students filled in the OCI-R twice with two weeks in between. The factor structure of the instrument was replicated in a confirmatory factor analysis. Cronbach's alpha and test-retest reliabilities of the OCI-R total scale and all subscales were satisfactory. Further, the OCI-R total score showed a significantly higher correlation with the PI-WSUR and the MOCI than with the PSWQ or the MPS. Finally, conceptually similar scales of the OCI-R and the MOCI as well as the PI-WSUR showed higher inter-correlations than the correlations that were observed between conceptually more distinct scales. It is concluded that the Icelandic version of the OCI-R has strong psychometric properties in a student population.     

Measuring Obsessions Without Worry: Convergent and Discriminant Validity of the Revised Padua Inventory in an Icelandic Student Population

The revised Padua Inventory (Padua Inventory-Washington State University Revision or PI-WSUR) was investigated in an Icelandic student population ( n = 431). The inventory was explicitly constructed to minimize the overlap between the measurement of obsessionality and worry. Its relationships with the Maudsley-Obsessive-Compulsive Inventory (MOCI) and the Penn State Worry Questionnaire (PSWQ) were investigated. The factor structure of the PI-WSUR was studied as well as the relations of PI-WSUR subscales with corresponding scales on the MOCI (checking, contamination). It was further investigated whether a factor analysis of the PI-WSUR together with PSWQ would indicate that the PI-WSUR and its different components were relatively uncontaminated by variance shared with worry. The results generally supported the psychometric properties of the Icelandic version of the PI-WSUR as well as its relative independence of PSWQ specifically.     

Maudsley Obsessional-Compulsive Inventory: obsessions and compulsions in a nonclinical sample

Obsessive-compulsive disorder is increasingly being studied in nonclinical samples. The self-report instruments used to select these samples, however, have not been validated with a diagnostic interview. This study thus investigated the predictive validity of the Maudsley Obsessional-Compulsive Inventory (MOCI) using the Anxiety Disorders Interview Schedule (ADIS), a semi-structured interview created according to DSM-III guidelines. Four sections of the ADIS--generalized anxiety disorder, simple phobia, social phobia and obsessive-compulsive disorder--were administered to 11 individuals who scored in the top 2% and 11 individuals who scored in the normal range of the MOCI 6-7 months prior to the interview. High nonclinical MOCI scorers reported more frequent and severe obsessions and compulsions as well as greater disturbance by these symptoms. In addition, the high MOCI group experienced more general worry and interference from worry, and more frequent and severe physiological symptoms when they worry. However, the two groups did not differ in terms of simple and social phobia symptoms. High MOCI scorers thus did not report a broad range of anxiety symptoms or fears, but specific obsessions and compulsions. These results provide further support for the validity of the MOCI in nonclinical samples over a 6-7 month interval.     

Psychometric properties of the OCI-R in a college sample

Two studies examined the psychometric properties of the Obsessive-Compulsive Inventory-Revised (OCI-R; Psychol. Assessment 14 (2002) 485) in a nonclinical student sample. In Study 1, we investigated the factor structure and internal consistency of the OCI-R using a sample of 395 undergraduate students. At a second testing session 1 month later, 178 students completed the OCI-R. Test-retest reliability was examined using data from 94 students who completed the OCI-R in both sessions. Convergent validity was also assessed with the Maudsley Obsessive-Compulsive Inventory (MOCI). In Study 2, we further investigated the convergent and divergent validity of the OCI-R using a new sample of 221 students who completed a battery of measures of obsessive-compulsive symptoms, worry, and depression. There was a significant order effect for both the OCI-R and the MOCI: means of each measure were significantly lower when presented second. Despite the order effect, statistical analyses indicated that the OCI-R has adequate test-retest reliability for the full scale and subscale scores, solid factor structure, and high internal consistency. Convergent validity with other measures of obsessive-compulsive symptoms was moderate to excellent, and divergent validity was good. The results indicate that the OCI-R is a short, psychometrically sound self-report measure of obsessive-compulsive symptoms.     

Religiosity and obsessive-compulsive behavior in Israeli Jews

Individual differences in obsessive-compulsive (OC) behavior in various cultures correlate with religiosity. The current paper explored the so far unstudied relationship between religiosity and OC behavior in Israeli Jews. Two studies were conducted. Study 1 focused on the relationship between religiosity and OC behavior in a representative sample of Israeli students. Study 2 focused on religious change and OC behavior in a non-random sample of 31 individuals who had become more religious (the MR group), and 30 individuals who were less religious (the LR group) than their parents. Instruments used were the Maudsley obsessive-compulsive inventory (MOCI), the student religiosity questionnaire, and questions about parental home observance, upbringing, and changes in religiosity. In the first study, no association was found between religiosity and OC behavior. Religiosity was related to some degree to perfectionism and to the parental attitude to upbringing. In the second study, a significant difference was observed between the MR and the LR groups on OC behavior as measured by the MOCI. Conclusion, among Israeli Jews a lot of religious observance is non-reflective, and is not associated with individual differences in personality or OC symptoms. Those who undergo religious change may do so in response to their behavioral propensities. One such path is that the more OC become MR, and the less OC less religiously observant.     

Factor Analysis of Scales Composed of Binary Items: Illustration with the Maudsley Obsessional Compulsive Inventory

It is well known that traditional factor analytic methods are designed for use with continuous data, and suboptimal for items with 2 response options (i.e., binary items). Nevertheless, traditional methods have been employed in all previous assessment of the dimensionality of the Maudsley Obsessional Compulsive Inventory (MOCI), a true/false measure of obsessive–compulsive symptoms ( R. J. Hodgson &; S. Rachman, 1977). The aim of this paper is to illustrate 2 techniques that are more suitable for factor-analyzing binary items than traditional methods, through application to the MOCI (n = 1,080). Computer files for use with the TESTFACT (D. Wilson, R. L. Wood, &; R. Gibbons, 1991 ) and Mplus (Muthén &; Muthén, 1998) computer programs are provided. Results from an inappropriately applied principal axis factor analysis are presented for comparison, and factor structures, loadings, and interfactor correlations are compared across methods.     

Memory deficits in compulsive checkers: replication and extension in a clinical sample

Thirteen checkers and twelve noncheckers, identified on the basis of their responses to the checking subscale of the Maudsley Obsessional-Compulsive Inventory (MOCI; Rachman and Hodgson, 1980), were recruited from a sample of 99 consecutive admissions to the outpatient department of a community mental health center. Consistent with our previous research with nonclinical samples of college students (Sher et al., 1983, 1984), checkers were found to show deficits in memory, especially recall for recently completed actions, compared to noncheckers. This result demonstrates the replicability of our previous findings across different types of samples and implicates deficits in memory for actions as a potentially important determinant of checking behavior. Assessment of spontaneous imagery associated with the anamnestic process suggested that checkers utilized less imagery, especially visual imagery, when recalling biographical information. Additional measures collected at the time of testing indicated that checkers were more neurotic and reported more psychological distress than noncheckers.     

The Maudsley Obsessional-Compulsive Inventory and OCD in a Norwegian nonclinical sample

The 30 item Maudsley Obsessional-Compulsive Inventory (MOCI) was given to 294 under graduate students. The inventory achieved an acceptable internal consistence, but somewhat low reliability. There were no sex difference in total MOCI score, or in any of the subscales. 31% of the variance seemed to be explained by item 18: "attending too much to details", and more than 65% of the variance is explained by the checking subscale. The data give some interesting indications of the prevalence of OCD in the population.     

The Vancouver Obsessional Compulsive Inventory (VOCI)

The original Maudsley Obsessional Compulsive Inventory (MOCI) has been widely used and is considered to be one of the best available self-report instruments for measuring observable obsessive-compulsive problems such as washing and checking. However, it has several limitations and requires updating. Our revision of the MOCI, the Vancouver Obsessional Compulsive Inventory (VOCI), was designed to provide assessment of a range of obsessions, compulsions, avoidance behaviour, and personality characteristics of known or theoretical importance in obsessive-compulsive disorder (OCD). The development of the VOCI is described, and we provide evidence of its reliability and validity. Our findings in samples of people with OCD, people with other anxiety disorders or depression, community adults, and undergraduate students suggest that the VOCI is a promising new measure. We anticipate that, like its predecessor, the VOCI will have widespread use in both research and clinical settings.     

Obsessive-compulsive symptoms in eating disorders

Obsessive-compulsive symptoms were measured in a consecutive series of new referrals with anorexia nervosa (n = 29) and bulimia nervosa (n = 77). In contrast with previous reports, there was no significant difference on MOCI scores between eating disorder groups and normal controls. A consecutive series of 38 patients with bulimia nervosa then entered a structured treatment programme. Poor outcome cases had a higher score on the MOCI-doubting sub-scale. However, there was no significant difference in obsessive-compulsive scores between those who were binge-free and those who were bingeing daily at the end of treatment and there was no significant in outcome between high and low-scorers on the MOCI. This study fails to support the view that the eating disorders are a subtype of OCD. Previous conflicting results are attributed to selection bias and the effects of low body weight.     

The impact of gender on the assessment of body checking behavior

Body checking includes any behavior aimed at global or specific evaluations of appearance characteristics. Men and women are believed to express these behaviors differently, possibly reflecting different socialization. However, there has been no empirical test of the impact of gender on body checking. A total of 1024 male and female college students completed two measures of body checking, the Body Checking Questionnaire and the Male Body Checking Questionnaire. Using multiple group confirmatory factor analysis, differential item functioning (DIF) was explored in a composite of these measures. Two global latent factors were identified (female and male body checking severity), and there were expected gender differences in these factors even after controlling for DIF. Ten items were found to be unbiased by gender and provide a suitable brief measure of body checking for mixed gender research. Practical applications for body checking assessment and theoretical implications are discussed.     

The Multidimensionality of Motivation for Jewish Religious Behavior: Content, Structure, and Relationship to Religious Identity

The present study examined the content and structure of self–reported motivation for Jewish religious behavior. Initial items were generated from comprehensive and detailed responses to a semi–structured interview and an open–ended questionnaire. Principal component factor analysis with orthogonal rotation was carried out on the responses of a sample of 323 research participants to two parallel sets of the 111 items produced by the above process. The factor structures for each of these sets of items were highly similar to each other and consisted of the following five reliable factors: belief in a divine order, ethnic identity, social activity, family activity, and upbringing. These factors appear to reflect the way religious behavior can contribute to the satisfaction of a number of general human motives. Persons with different religious identities were found to attribute their performance of religious ritual to different motives, providing a partial explanation for the apparent anomaly of the performance of religious ritual by persons who identify themselves as secular.     

Why don't health professionals check patient understanding? A questionnaire-based study

Checking patient understanding, by asking questions about information presented in a medical consultation, is a core communication skill but its use is not frequently assessed. The newborn hearing screening commenced in England with a pilot of its implementation in January 2002. Because it is a new screening test, it provided an opportunity for studying the effective communication of novel information. A randomized controlled trial of training newborn hearing screeners to present information about the screening test and to ask questions to check understanding was commenced but had to be prematurely ended as the majority of the screeners did not ask the questions. The aim of this study was to understand why the screeners did not ask questions to check understanding of the information provided. Questionnaires were sent to screeners who participated in the study to elicit their responses to the use of the questions to check understanding. A response rate of 87% (26/30) was achieved. Screeners who reported not asking the questions were more likely to express a lack of confidence in their ability to ask questions, and to perceive asking questions as an ineffective way of increasing patient understanding. The study suggests that the ability and willingness of healthcare professionals to use simple communication skills may have been overestimated and training needs to target skills as well as beliefs about the effectiveness of using them.     

Danger Ideation Reduction Therapy (DIRT) for treatment-resistant compulsive washing

Five intractable cases of obsessive-compulsive disorder were treated with the Danger Ideation Reduction Therapy (DIRT) program. All five cases: (1) had displayed excessive washing/cleaning behaviour for at least 10 years; (2) had failed to respond to a minimum of two separate, 12-week drug trials with serotonergic agents; (3) failed to respond to at least 15 sessions of exposure and response prevention at the beginning of the present trial, and; (4) satisfied the DSM-IV criteria for OCD with Poor Insight. DIRT was conducted in 14, weekly, individual sessions or until, in the judgement of the treating clinician: (1) clinically significant gains were apparent with minimal symptomatology remaining, and (2) clients displayed a sound grasp of the cognitive model underpinning DIRT procedures. At post-treatment, substantial reductions in scores on the Padua Inventory (PI), Maudsley Obsessional-Compulsive Inventory (MOCI), Beck Depression Inventory-II (BDI-II) and two global rating scales were apparent for four of the five subjects. These improvements were maintained at 4-to-6 month follow-up, with four of the five cases meeting Jacobson and Truax's (1991) criteria for 'recovery' on the MOCI and the PI by this assessment stage. While one subject remained non-responsive, the present findings suggest that DIRT may be a viable option for treatment-resistant cases of compulsive washing. The theoretical implications of the findings are discussed.     

Vulnerability to depressive mood reactions: toward a more powerful test of the diathesis-stress and causal mediation components of the reformulated theory of depression

To provide a more powerful test of the diathesis-stress component of the reformulated theory of depression (Abramson, Seligman, & Teasdale, 1978), we extended and refined the Metalsky, Abramson, Seligman, Semmel, and Peterson (1982) study and examined whether the content of college students' attributional styles (hypothesized attributional diathesis) as measured at Time 1 interacted with the outcomes students received on a class midterm exam to predict their subsequent depressive mood responses. In addition, to test the mediation component of the theory, we examined whether the relation between the hypothesized attributional diathesis and failure students' subsequent depressive mood responses to their low midterm grades was mediated by the particular causal attributions these students made for their low grades. The results partially corroborated the current statement (Abramson, Alloy, & Metalsky, 1986; Abramson, Metalsky, & Alloy, 1986a, 1986b) of the diathesis-stress component of the theory. Whereas students' immediate depressive mood reactions were predicted solely by the outcomes they received on the class midterm exams, their enduring depressive mood reactions were predicted solely by the hypothesized Attributional Diathesis X Outcome on Midterm Exam interaction. The direction and form of the interaction were in line with prediction. The results fully corroborated predictions derived from the mediation component of the theory as they applied to students' enduring mood responses.     

Psychometric properties of the Padua Inventory in Chinese college samples

The aim of the present study was to investigate the psychometric properties of the Padua Inventory in Chinese college samples. Three different samples (N1 = 1,939, N2 = 1,341, and N3 = 298) of Chinese college students were recruited. Exploratory factor analyses yielded a four-factor structure which was similar to that found in previous studies. Further, present results showed good internal consistency as well as convergent and divergent validity with the subscales of the Symptom Checklist-90 and the Penn State Worry Questionnaire. Although no sex difference was found on total score, women had significantly higher scores on Factor 2 (Urges and worries of losing control over motor behaviors) and Factor 4 (Checking), while men had significantly higher scores on Factor 3 (Contamination). Implications of ter the results and directions for research are discussed.