Behaviour-in-Systems is a way of looking at problems that:   

• Uses behavioural science to understand what people actually do and why   
• Uses systems thinking to understand how behaviour shapes and is shaped by context 
• Integrates both systems and behavioural sciences ideas to develop intervention programmes that work. 

Behaviour-In-Systems is an approach to understanding and managing complexity that integrates behavioural and systems science. It's origins are in the early work in Behavioural Systems Mapping pioneered by Dr. Paul Chadwick whilst at the UCL Centre for Behaviour Change. It has since been developed and extended through 6 years of applying the principles to a range of real world projects.

There is no one single way of applying the Behaviour-in-Systems approach. Each project is unique and needs it's own methodology to ensure it is useful for the needs of the organisation.  

The approach draws upon a range of frameworks, models and methodologies to best address the needs of the problem and the organisation.  

 However, almost all projects using a Behaviour-In-Systems approach involve the following:

• Improving shared understanding of the problem and solutions accross diverse stakeholders 
• Creation of a visual map of the key outcomes, people, organisations, behaviours and influences involved in a complex problem
• Explanation of the causal relationships and feedback loops that keep the system from changoing, and the leverage points that can be used to shift outcomes
• Explanation for why previous attempts might have not produced the desired results, or the factors limiting the success of previous interventions
• A theory of change and practical roadmap for implementing change