The objective of this study is to design and validate an online intervention aimed at promoting well-being in women with postpartum depression. For this, the design of a multicomponent protocol consisting of empirically validated positive interventions and comparing these with a group Cognitive Behavioral Therapy (CBT) is proposed, following the National Institute for Health and Care Excellence (NICE) recommendations for the treatment of depression. Participants will be screened for inclusion in the program if they meet clinical criteria. After that, they will be randomly assigned to a CBT group or a positive psychology intervention (PPI) group.

Participants will be randomly assigned to the CBT group or the PPI group. Both groups will be treated identically except for the type of intervention. Group assignment will be blind to both patients and investigators.

Both interventions have 10 weekly sessions. Sessions will be in groups and online.

CBT includes 3 modules: behavioral activation, cognitive restructuring, and interpersonal skills. Main contents (10 sessions): (1) Symptoms of Depression. Myths about motherhood. CBT approach; (2) Stress and Anxiety. Relaxation; (3 and 4) Increase pleasurable activities. Balance in life. To manage time; (5) Management of negative thoughts. Health concerns; (5 and 6) Increase positive thoughts; (7) social skills; (8) Communication skills and parner support; (9) Plan for the future. New routines and strategies; (10) Relapse prevention. CBT has been shown to be effective in reducing depressive symptoms and modifying attentional biases (Pearson et al., 2013).

On the other hand, a new protocol of positive interventions adapted for women after maternity (PPI) will be designed and applied. This multicomponent protocol includes interventions that have already been empirically validated in treating depression. PPI includes 2 modules: hedonic well-being and eudaimonic well-being. Main contents (10 sessions): (1) Symptoms of Depression. Myths about motherhood. PPI approach; (2) Mindfulness and positive emotions; (3) Gratitude and savoring; (4) Emotion regulation (5) Positive relationships and social support; (6) Compassion; (7) Personal strengths; (8) Goals and values; (9) Resilience; (10) Relapse prevention.

Inclusion Criteria:

• Women who have been mothers in the last year

Exclusion Criteria:

• Women who have been mothers in the last month,
• Women who meet the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria for substance abuse and/or dependence within 30 days prior to study participation,
• Women who have a serious mental disorder that makes it difficult to follow the protocol (e.g. serious neurocognitive problems or brain damage; schizophrenia and other psychotic disorders).

Information on the evaluation and intervention protocol can be requested from the researchers. Likewise, the individual participant data can be provided on demand to guarantee the transparency of the study.

Since the end of the study (June 2024) and for 10 years

The individual participant data can be provided on demand to guarantee the transparency of the study.