This randomized control trial aims to investigate whether a novel intervention, the "Building Regulation in Dual Generations (BRIDGE)" program, improves mental wellness and parenting practices among mothers of 3 to 5-year-old children who have elevated symptoms of depression. The main two questions this study aims to answer are: * Does participation in the BRIDGE program reduce maternal depression symptoms? * Does participation in the BRIDGE program improve children's mental health? Researchers will compare the BRIDGE intervention to an established mental health intervention (i.e., Dialectical Behaviour Therapy skills group) and to a services-as-usual control group to see if participation in BRIDGE leads to greater improvements than either the general mental health treatment or community services as usual. Participants will: * Complete a set of questionnaires pre- and post-intervention, and at 6-month follow-up. * Complete a virtual assessment with their child at pre- and post-intervention. * Be randomized to BRIDGE, Dialectical Behavioural Therapy(DBT) skills group, or a services-as-usual control group. * Participate in the 16-week BRIDGE or DBT Skills only group, if randomized to either of these groups. If they are randomized to services-as-usual they will receive a list of community resources they can access. * Complete weekly symptom monitoring via questionnaires, if randomized to BRIDGE or DBT Skills * Wear a Fitbit device during pre- and post-intervention, as well as throughout the 16-week intervention period.
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Change in depression symptoms
Timeframe: The PHQ-9 will be assessed during eligibility screening, pre-intervention (T1), immediately after the intervention (T2), and at 6-month follow-up (T3).
Change in child mental illness symptoms
Timeframe: Assessed at pre-intervention (T1), immediately after the intervention (T2), and at 6-month follow-up (T3).