Behavioural Scientist · Sussex & London
Rachel Neller
Behavioural research that drives impact – across financial services, health and AI products.
- Studying
- MSc Behavioural Science, London School of Economics (2026–27)
- Working
- Behavioural Scientist, OrbitResearch Assistant, Centre for Behaviour Change, University of Bath
Currently looking for an organisation to partner with on my MSc dissertation (due Aug 2027). Click here for more info
I'm a behavioural scientist whose research has reshaped a product's architecture, won a client commission and informed a project funded by JP Morgan Chase. I'm currently studying for the MSc in Behavioural Science at the London School of Economics, while also working as a Research Assistant at the University of Bath's Centre for Behaviour Change and as a behavioural scientist at Orbit, an early-stage startup building infrastructure for referral-led growth.
The projects I've enjoyed the most have left products, services and policies better for the people who use them. If you have a behavioural question you'd like tested for an MSc dissertation, or want to talk about any of the above, get in touch.
Research interests
More on my research →Financial Health & Vulnerability
How financial pressure shapes payment behaviour, and how providers can design products and communications that deliver good outcomes under the Consumer Duty.
Motivation & Self-Determination
How factors like autonomy, competence and belonging motivate healthy and prosocial behaviours – and how this understanding can be built into AI and digital products.
Behaviour Change in Health
AI-assisted and patient-informed interventions for people managing several conditions at once, built from public involvement.
Behavioural Design of Spaces & Products
Choice architecture in workplaces, messaging and AI products: small changes to an environment that shift what people do.
Skills & tools
I've run research end to end, from study design and recruitment through analysis to client recommendations.
Research Methods
- A/B testing
- Interview studies
- Surveys
- Patient & public involvement
- Scoping reviews (PRISMA-ScR)
- Qualtrics
- Gorilla
Data Analysis
- R
- SPSS
- Excel
- Econometrics
- Thematic analysis
- Qualitative coding
- Python (beginner)
Frameworks
- COM-B
- Behaviour Change Wheel
- EAST
- Self-Determination Theory
- Hausmann growth diagnostics
Tools & Workflow
- OSF
- Covidence
- Embase · Scopus · Cochrane · EBSCOhost
- Google Workspace
- Microsoft Office
- Slack
- Plane
- Canva
Selected research
All research →-
2026
AI-Assisted Behavioural Activation for People with Multi-morbidity: A Rapid Scoping ReviewIn progress
A PRISMA-ScR scoping review. I co-drafted the OSF registration and search strategy, ran the design checks, and led the patient and public involvement sessions.
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2026
Do Behavioural Levers Shift Referral Motivation? A Mixed-Methods A/B Interview StudyIn progress
A study with 30+ participants that I designed and led. It informed a two-layer segmentation framework that was adopted into the product's architecture.
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2025
Too Little, Too Late: How Financial Vulnerability Shapes Credit Card Late Fee Payment Behaviour
Presented to ideas42's Financial Health team; the findings informed a wider ideas42 project funded by JP Morgan Chase.
Read more →
What colleagues say
“Rachel joined Fairer Finance for a two-week placement in September, and she made a strong impression from day one. She quickly adapted to our workplace environment, and showed great enthusiasm for learning throughout her time with us. Drawing on her background in behavioural science, Rachel contributed to several of our core consultancy projects, from reviewing customer communications to helping pitch a behavioural science training course.
One of the highlights from Rachel’s time here was the ‘lunch and learn’ presentation she delivered to the whole team. It was creative, interactive, and gave us plenty of food for thought. Rachel is incredibly reliable, thoughtful and professional – and I have no doubt she has a bright future ahead in both her studies and career.”
“Rachel played a leading role in developing a behavioural perspective for workplace design for large organisations. I enjoyed learning her perspectives on wellbeing insights, and how she provided tangible criteria and integrated this into the design process. Her ability to translate behavioural science into practical design considerations meant her work contributed meaningfully to the overall direction of our work together.”
“Rachel was a pleasure to work with during her time at Arup. She contributed thoughtfully to client projects, built strong relationships quickly, and brought a positive and engaged presence to the team.”
“Rachel combines natural relationship building with proactive systems improvement to excel across every level of business. An asset to the team.”