In an effort to better understand the causes of obsessive-compulsive disorder, recent developments in cognitive-behavioral models have incorporated classical constructs such as doubt. Obsessional doubt is explained by incompleteness and “not just right” experiences or operationalized as chronic indecisiveness. Specific instruments have been developed to assess these constructs: Obsessive Compulsive Trait Core Dimensions Questionnaire (OC-TCDQ), Not Just Right Experiences Questionnaire (NJRE-Q), and Indecisiveness Scale (IS). A sample of non-clinical participants (N= 253) completed the aforementioned questionnaires together with other measures of obsessive-compulsive symptoms, anxiety and depression. Results showed that the Spanish version of the three questionnaires have good psychometric properties. Moderate correlations were found between the constructs under study and with the psychopathological measures. Not just right experiences and feelings of incompleteness (OC-TCDQ), correlated moderately with obsessive-compulsive symptoms, a result which cannot be entirely explained by their association with anxious and depressive symptoms.