Maternal Humming during Kangaroo Care: Effects on Preterm Dyads' Physiological Parameters.

Humming is probably more effective than speech for improving mothers' cardiorespiratory function and infants' self-regulation. We intend to understand the effects of (1) maternal humming vs. speech on preterm infants' physiological parameters, (2) maternal humming vs.

Emotional states and psychopathological symptoms in couples during pregnancy and post-partum.

Aims: Comparing depression, anxiety, stress and psychopathological symptomatology in: pregnancy vs. post-partum in men and in women, marital partners' (men vs. women) in pregnancy and in post-partum.

Prenatal attachment and sociodemographic and clinical factors in Portuguese couples.

Objectives: To observe differences between maternal and paternal prenatal attachment as a function of sociodemographic and clinical/obstetric factors.

Methods: Quantitative descriptive correlational study.

Instruments: Sociodemographic and Clinical Questionnaire; Maternal and Paternal Antenatal Attachment Scale (Portuguese version by Camarneiro & Justo).