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We aim to study the the reliability and factorial structure of the Postpartum Bonding Questionnaire (PBQ)administered through two different formats, offline (paper-and-pencil) and online. We also compared clinical, obstetrical, reproductive, and psychopathological variables related to poor mother infant bonding (MIB). A cross-sectional study was conducted on 1,269 mothers. The offline group included 812 women who attended a 40-day postpartum clinical appointment. The online group consisted of 457 women recruited during admission for delivery who volunteered to carry out the online protocol 40 days postpartum. All the participants individually completed the PBQ, the Edinburg Postnatal Depression Scale (EPDS) and other clinical and sociodemographic variables. The 4-factor solution proposed in the PBQ and its Spanish validation showed good model fit for both samples. Online participants reported higher levels of stress, depressive symptoms, and poor bonding, specifically on PBQ scores and the Rejection and Anger subscales. No differences were found in both samples regarding the type of statistical associations between PBQ and sociodemographic, reproductive, obstetric and psychological outcomes. Online assessment may be an appropriate option for detecting possible alterations in MIB due to the reduction of desirability bias, the increased perception of anonymity, and being a more cost-effective method. [ABSTRACT FROM AUTHOR]

Aims: To translate and adapt the Maternal Attachment Inventory (MAI) into Spanish; to develop a short form of the instrument that can be used during early childhood; and to test its psychometric properties in a large sample of Spanish mothers. Design: Cross‐sectional study of adaptation and cultural validation of instruments. Methods: Data were collected between February and September 2018. In Stage I, the instrument was culturally adapted using a standardized translation and back‐translation method. In Stage II, the factor structure of the Spanish version was tested in a sample of 300 mothers with children aged between 2 and 7 years, and on the basis of the findings a short form of the instrument was developed. Finally, in Stage III, in a second sample of 356 mothers, confirmatory factor analyses of first‐, second‐order and bi‐factor structure were conducted to find the optimal factor structure of the short form of the Spanish MAI. Convergent validity, internal consistency and test–retest reliability were also examined. Results: A bi‐factor structure with four sub‐scales and 17 items emerged from the factor analyses conducted in Stages II and III. Scores on the short form were negatively correlated with mother‐to‐infant bonding disorders. The short form presented adequate internal consistency and test–retest reliability. Conclusions: The Spanish MAI short form is a valid and reliable measure for assessing maternal attachment in mothers of children aged between 2 and 7 years. Impact: We present a short version of the MAI for healthcare professionals, adapted for application in a new age range and validated for use with Spanish mothers. [ABSTRACT FROM AUTHOR]