Approximately 1 in 4 adolescent mothers will develop depression after delivering a child, though some studies suggest that as many as 53% will develop postpartum depression. A frequent accompanying symptom is emotion dysregulation which not only adversely affects their mental well-being, but jeopardizes their parenting and their child's health. Unfortunately significant barriers exist for young mothers, preventing access to treatment. This study will pilot the feasibility of having public health nurses deliver this 9-session program within a curriculum for teen mothers.

Up to 50% of women who become parents during the teenage years suffer from mental disorders after the birth of their children. While they most commonly develop depression, anxiety problems and substance use disorders are also common, and in many cases they are comorbid. A significant proportion of these young women will also manifest impairing but sub-syndromal levels of symptoms. A frequent accompanying symptom is emotion dysregulation which not only adversely affects their mental well-being, but jeopardizes their parenting and their child's health, as well as longer-term labour market outcomes.

Perinatal mental disorders are associated with significant suffering and high health care costs. Indeed, a single case of postpartum depression is estimated to cost $150,000, a figure that may be even higher in young mothers. Compounding these adverse effects is the fact that just 15% of women with young children and mental disorders receive evidence-based care, numbers that are almost certainly lower in young mothers given their well-known difficulties engaging in health care.

Getting these young women to engage in treatment can be a significant challenge, but given the substantial risks and costs associated with mental disorders in this group, as well as the effectiveness of preventive and treatment interventions (particularly the psychotherapies), it is important that innovative ways to engage and support adolescent mothers be developed. Since many will attend school either in a traditional or adapted setting, the educational system provides an ideal place to deliver interventions aimed at optimizing the mental health of teenage mothers.

The purpose of this pilot study is to develop and establish the feasibility of having public health nurses deliver a 9-session group cognitive behavioural therapy-based resilience curriculum within a school program for teenage mothers at the District School Board of Niagara. In addition to establishing the feasibility and acceptability of the curriculum, estimates of intervention effect and its variance will be generated to support a later large-scale study aimed at assessing its effectiveness.

CBT-based curriculum has been developed to help build resilience and optimize mood, anxiety, and emotion regulation in 15-24 year old women attending a supported school program in Niagara Region. Sixty women will be recruited and changes in depression, anxiety, emotion regulation, parenting, and behavioural problems in their children will be measured pre-group, immediately post-group, and 6 months later.

Inclusion Criteria:

• As this is a study of young mothers, women who are 15-24 years of age, speak English, and have a child under the age of 5 will be recruited.

Exclusion Criteria:

• Only women aged 15-24 years who have a child under the age of five will be eligible. Women must be enrolled in the Strive Niagara program.