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Mental contamination refers to feelings of contamination that arise without physical contact with a contaminant. Mental contamination has been documented among sexual assault victims, some of whom report feeling dirty and wanting to wash in response to memories of the assault. This study examined variables associated with increased vulnerability to mental contamination. Female undergraduates (n = 100) filled out a series of questionnaires and listened to an audiotape that instructed them to imagine experiencing a forced kiss by an undesirable male. Controls (n = 20) imagined a consensual kiss by a desirable male. Women in the non-consensual condition reported stronger feelings of dirtiness and urge to wash than those in the consensual condition. Twenty-seven women in the non-consensual condition spontaneously rinsed in order to alleviate physical sensations evoked by the tape. Regression analyses revealed that significant predictors of dirtiness included contact contamination fear and disgust sensitivity, and there was a trend for anxiety sensitivity to predict dirtiness. Contact contamination fear was also a significant predictor of urge to wash. Prior experience with unwanted sexual contact was a significant predictor of rinsing, and there was a trend for fear of negative evaluation to predict rinsing. Discussion focuses on the implications of these findings for our understanding of mental contamination. Keywords: Contamination; Mental contamination; Obsessive--compulsive disorder; Vulnerability

An experiment was carried out in order to test the hypothesis that feelings of mental pollution can be induced without physical contact. A sample of 121 female university undergraduates were asked to imagine experiencing a non-consensual kiss at a party, as described on an audiotape, or a consensual kiss described on a comparable audiotape. The manipulation succeeded and participants in the non-consensual kiss condition reported significant feelings of mental pollution, negative emotions and cognitions, as well as the urge to wash. Further, eight participants in the non-consensual kiss condition engaged in washing/rinsing behaviour to counteract feelings of mental pollution. The results are consistent with the hypothesis and with reports from an earlier study of victims of sexual assault, a majority of whom described feelings of mental pollution post-assault. The results are also compatible with case descriptions of the onset of mental pollution and OCD subsequent to sexual trauma. Some possible implications of the results, clinical and theoretical are adumbrated. Keywords: Mental pollution; Sexual assault; Obsessive compulsive disorder

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. Keywords: Obsessive Compulsive Disorder; Test construction; Questionnaires; Self report; Psychological assessment

Compulsive cleaning is an attempt to remove feelings of contamination that threaten one's physical health, mental health or ability to function socially. The fear of becoming contaminated can be complex, powerful, persistent and easily spread. Contamination is defined, the main types of contaminants set out and the characteristics of the fear are described. The distinction between normal and abnormal feelings of contamination is considered, and abnormal beliefs about contamination are analysed. Attention is drawn to the fact that contamination can occur without any physical contact, and the concept of mental pollution is used to elucidate this process. The causes and consequences of contamination fears are described, and some connections between fear and disgust are considered. The concept of cognitive comorbidity is applied to an analysis of associations between the fear of contamination and obsessions, social fears and phobias. It is suggested that applying cognitive analyses and tactics may improve our ability to treat these powerful and tenacious fears. Keywords: Compulsive cleaning: Contamination; OCD; Pollution

Compulsive ordering and arranging, and a preoccupation with symmetry are features of obsessive-compulsive disorder (OCD) that have not been examined experimentally. Three connected studies were conducted to examine this phenomenon: a self-report measure of this behaviour was developed and validated, participants were asked to engage in tasks designed to assess preferences for order, and to assess the interference of disorderly surroundings in the completion of a stressful activity. The self-report measure has sound psychometric properties and validity. Participants with a strong preference for order were made more anxious by having to complete a difficult task in a disorganized environment. Participants without this preference did not show this effect. The results are discussed in terms of the phenomenology of compulsive ordering and arranging, and its relationships with both OCD and normal human behaviour. It is suggested that compulsive ordering and a drive for symmetry are extreme manifestations of the common preference for order and symmetry. Keywords: Ordering; Arranging; Symmetry; Obsessive-Compulsive Disorder; Assessment; Compulsions

This paper describes an investigation of the phenomenon of mental pollution in a sample of 50 female victims of sexual assault. Feelings of mental pollution were assessed using an interview and a questionnaire. An experimental procedure was employed to determine if feelings of dirtiness and the urge to wash could be provoked by deliberate attention to the assault memory. Thirty (60%) of the 50 participants reported some feelings of mental pollution subsequent to the assault, and feelings of mental pollution were related to post-assault washing behaviour. Deliberate recall of the assault resulted in stronger feelings of dirtiness and the urge to wash than did deliberate attention to a pleasant memory or scene. Nine women reported washing their hands in response to deliberate recall of the assault. These findings suggest that feelings of mental pollution may be prominent in victims of sexual assault. Keywords: Mental pollution; Sexual assault; Obsessive compulsive disorder; Post traumatic stress disorder

It is proposed that compulsive checking occurs when people who believe that they have a special, elevated responsibility for preventing harm, mainly to others, are unsure that the perceived threat has been reduced or removed. The intensity and duration of this checking is determined by three 'multipliers': increased responsibility, probability of harm and anticipated seriousness of harm. The recurrency of the checking is promoted by a self-perpetuating mechanism, comprising four elements: paradoxical increases in responsibility and in perceived probability of harm, reduced confidence in memory and the absence of a certain end to the threat. The relation between compulsive checking and other anxiety disorders is examined and the successes and failures of past or present treatments re-considered. Experimental predictions are set out and the therapeutic implications of the construal are discussed.

A psychometric study was conducted in order to collect basic information about post-event processing in social anxiety. It was found that such processing occurs commonly after an anxiety-evoking or embarrassing social event and post-event processing scores were significantly correlated (r = 0.40) with social anxiety. The recollections of the social event tended to be recurrent and intrusive, interfering with concentration. Post-event processing was associated with the avoidance of similar social situations. The results are discussed in terms of the Clark and Wells model of social phobia.