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Objective: To describe the initial steps in the development and validation of a new self-reported instrument designed to assess daily rhythms of mood symptoms, namely, the Mood Rhythm Instrument. Methods: A multidisciplinary group of experts took part in systematic meetings to plan the construction of the instrument. Clarity of items, their relevance to evaluation of mood states, and the consistency of findings in relation to the available evidence on the biological basis of mood disorders were investigated. The internal consistency of the questionnaire was evaluated through Cronbach's alpha. Results: All of the items proposed in a first version were well rated in terms of clarity. The items more frequently rated as ''rhythmic'' were related to the somatic symptoms of mood. Their peaks in 24 hours were more frequent in the morning. The items associated with affective symptoms of mood were rated as less rhythmic, and their peak in 24 hours occurred more frequently in the afternoon and evening. Males and females behaved more similarly with respect to somatic than behavioral-affective items. The second version of the Mood Rhythm Instrument had a Cronbach's alpha of 0.73. Conclusion:The proposed Mood Rhythm Instrument may be able to detect individual rhythms of cognitive and behavioral measures associated with mood states. Validation in larger samples and against objective measures of rhythms, such as actigraphy, is warranted.

Objectives: This study was aimed to evaluate the effects of the Breathworks' Mindfulness for Stress 8-week course on depressive and psychiatric symptoms, and on positive and negative affects, compared with active control and wait list. Method: A total of 84 primary care health professionals enrolled in the study, in quasi-experimental research design. The scales Beck Depression Inventory, Self-Reporting Questionnaire, Positive and Negative Affect Schedule, Self-Compassion Scale, and Five Facets of Mindfulness Questionnaire were applied before and after the interventions. Results: Depressive symptoms, psychiatric symptoms, and negative affects had a statistically significant decrease before postintervention evaluations in Mindfulness for Stress group, and the levels of self-compassion and observe and non-reactivity dimensions of mindfulness improved after the intervention. Conclusions: The Mindfulness for Stress program can be considered a feasible group intervention to improve the mental health of healthcare professionals.

Introduction:The Mood Rhythm Instrument (MRI) is a questionnaire developed to assess the circadian rhythm of mood-related behaviors. The aim of this study was to translate this instrument from Brazilian Portuguese into Spanish. Methods:The translation process consisted of forward translation, adjustment, back translation, back translation review and harmonization.Results: Comparing the initial Spanish translation and the final Spanish version, there were no semantic differences and the items were not changed. Conclusions:The Spanish version of the MRI is ready to be tested in a Spanish population. In the future, assessing and comparing mood-related behaviors in transcultural studies will be possible.