About Us
The Behavioural Science Co. is the behaviour change and evaluation practice at Lonergan Research. We bring together two specialist agencies: The Behaviour Change Agency, delivering behavioural research, social marketing and consultancy to inform evidence-based strategies, and The Evaluation Agency, measuring how initiatives influence behavioural drivers, outcomes and impact. Both are connected by our Behaviour Logic Framework, because outcomes don’t change unless behaviour does.
Why Use Lonergan
Evidence-led
Grounded in behavioural science, social marketing, and best-practice frameworks
Design to impact
Connecting behavioural insight with drivers, behaviours, and outcomes
Outcome-focused
Measuring behavioural drivers, behaviours, and outcomes – not just awareness
Independent
Trusted, objective advice aligned to impact and accountability
Government-ready
Deep experience across policy, programs, evaluation, and reporting
Who We Work With
Government agencies and not-for-profit organisations seeking to:
- Design communications, programs, and services that influence behaviour
- Strengthen decision-making through behavioural evidence
- Evaluate effectiveness and demonstrate measurable impact
- Improve delivery, engagement, and community outcomes
Who we are
Joan Young,
Lead Researcher
Outcomes don’t change unless behaviour does
Joan Young,
Lead Researcher

Chris Lonergan,
CEO
