The COVID-19 pandemic presents significant risks to the mental health of the Australian population. Our project seeks to investigate the week by week impact of unprecedented lifestyle changes associated with social distancing. Chronic stress and social isolation have potential risks for adult mental health, family relationships and conflict, and child health, and development. There is evidence that rates of family conflict and domestic violence increase during and in the aftermath of crisis events, such as the 2010-2011 Canterbury earthquakes in New Zealand, the 2009 Victorian Bushfires in Australia, and the 2005 Hurricane Katrina in the US. Likewise, studies have found increases in substance use, including alcohol use, in populations affected by disasters and crisis events. There is also a significant likelihood that families in Australia, and internationally, will experience job loss or employment insecurity, chronic stress, and increased social isolation. These factors are known to increase a broad spectrum of risks related to parent mental health, family functioning, and child health and development. This project will track parents over the pandemic and provide timely information on the mental health effects of the emerging COVID-19 crisis on parents, families and children in Australia.