Academic profile
Neal Haddaway
Find out more

About me

I am a freelance researcher working in evidence synthesis methodology. My background is in environmental science, but since 2012 I have been developing and testing methods in interdisciplinary evidence synthesis (systematic reviews, systematic maps, evidence maps, etc.). My specialities include systematic mapping methods, evidence synthesis technology (tools to support evidence synthesis), developing communities of practice, Open Science and evidence synthesis (Open Synthesis), evidence synthesis capacity building and education, and stakeholder engagement in evidence synthesis.

Services I offer


I offer a range of freelance services to support evidence synthesis needs, primarily as expert advice, but also for the conduct of discrete evidence synthesis projects or tasks.

Methods Advice

I provide support to those wanting develop evidence synthesis pipelines or establish synthesis procedures within new or existing research systems. This can include advice on guidance and best practices in evidence synthesis, or on integrating synthesis methods, tools and frameworks within existing research systems. I also provide advice on hosting hackathons and free virtual conferences.


I provide a range of group and one-on-one training both online and in person. Current courses include:

  • 1-day Introduction to Systematic Reviews and Maps Workshop (ideal for review commissioners/users)
  • 2-day Systematic Review and Mapping Methodology Workshop (learn how to conduct robust reviews)
  • Half-day Developing Protocols for Systematic Reviews and Maps Workshop (ideal for people needing support in designing and finalising review/map protocols)
  • 1-day Stakeholder Engagement in Evidence Synthesis Workshop
  • Half-day Planning and Resourcing Evidence Synthesis Projects Workshop
  • 1-day Advanced Searching for Systematic Reviews Workshop
  • Half-day Tools and Technology for Supporting Evidence Synthesis Workshop
  • Half-day Arranging Free Virtual Conferences Workshop
  • Half-day Running a Hackathon Workshop

Fill in this expression of interest form if you're interested in joining an existing planned workshop online, or email me to make an enquiry about a commissioned/private workshop.

Tool design

I have deveoped a range of evidence synthesis tools collaborative and independently, including: citationchaser; PRISMA2020 flow diagrams; EviAtlas; bibfix; PredicTER. These OpenSource tools are developed in R and hosted online as free-to-access web-based Shiny apps. I can help to develop bespoke tools for your organisation's evidence synthesis needs, making use of the extensive expert coding network from the Evidence Synthesis Hackathon. Contact me to make an enquiry.

Review conduct

I have been involved in the conduct of approximately 50 evidence syntheses, providing methodological advice and mentoring, and also managing, leading, and contribution to core review activities including stakeholder engagement, planning, protocol development, searching, eligibility screening, data extraction and coding, critical appraisal of validity (risk of bias assessments), narrative, quantitative (meta-analysis) and qualitative synthesis, data visualisation, report writing, and communications (including website and data platform design). I can provide any of these services as individual or collective tasks for your review project, and can help to source highly skilled colleagues for tasks requiring additional support.


Read more about my background and experience below