The QDAS team

Together, we have more than 80 years’ experience conducting research and training researchers to use customised software for qualitative analysis.

Christina Silver, Ph.D. 

Christina Silver

Christina has been using and teaching CAQDAS packages since 1997. She has conducted many different research projects, big and small, with and without the use of qualitative software – including her own studies and many other academic and applied research projects.

Christina's strength is in working out creative and efficient ways to analyse different types of data using dedicated software. She enjoys the dynamic nature of intensive workshop-based training and bespoke one-on-one coaching where she can not only train participants in the operation of software, but together with them, design strategies that are best suited to the needs at hand. This way, she learns from those she works with as well as supports them in their analysis. 

Christina has designed and carried out analysis for many independent organisations. She has taught under- and post-graduate qualitative methods courses in UK and European universities and currently contributes to doctoral programmes at several institutions. Christina is the Director of the UK arm of QDAS (Qualitative Data Analysis Services Ltd.) and is the manager of the CAQDAS Networking Project.

Christina is co-author of Using Software in Qualitative Research: A Step-by-Step Guide with Ann Lewins and The Five-Level QDA® method with Nicholas Woolf

Christina has expertise in all the major CAQDAS packages, including ATLAS.ti, Dedoose, MAXQDA, NVivo, QDA Miner, Quirkos and Transana.

Christina is based in the UK and travels around the world for QDAS.

Find out more about Christina on her LinkedIn profile and follow her on Twitter

Ann Lewins

Ann Lewins

Ann has been using and teaching Computer Assisted Qualitative Data AnalysiS (CAQDAS) packages since 1994. She pioneered the development of institutional support for the use of this range of software applications, helping to create the CAQDAS Networking Project. She has worked with a wide variety of developers of software, methodologists and researchers in different academic and applied disciplines. She has trained widely across Europe. Ann is based in the UK.

Much of Ann’s teaching and research consultations have been to provide direct advice about the use of software in the context of specific research questions and requirements. A constant variation in the demands and objectives of each project has kept Ann grounded in the needs of researchers while she is always looking to optimize the tools available to help their work.  She adopts a real-world approach to using software and alongside her other work with individual projects has recently specialized in providing advice to large collaborative research projects where the logistics and realities of work at grass roots have to be properly considered and planned ahead of time.

With her long experience Ann takes a lateral approach to rationalizing tasks. She is sometimes the ‘fixer’ - the person who works out convoluted or incremental software based solutions to a particular analytical challenge.  This comes in handy at times! 

Ann is co-author of Using Software in Qualitative Research: A Step-by-Step Guide with Christina Silver. 

Jennifer Patashnick

Jennifer Patashnick

Jennifer has been using and teaching CAQDAS packages since 1998. She previously worked for Video Intervention/Prevention Assessment (VIA) at Children's Hospital Boston, where she was the Analysis Coordinator for ten years. At VIA, Jen implemented the use of qualitative software to code, structure, and model data and was responsible for the analysis of large amounts of data generated by young people in the form of audiovisual narratives. Her academic areas of interest include medicine, child development, and linguistic anthropology, but she has worked with researchers in all fields from education to fisheries and beyond.  Jen is based in the USA and resides near Boston, Massachusetts. 

Sarah L Bulloch, PhD.

Sarah L Bulloch

Sarah is a social researcher who is passionate about methods, with expertise in qualitative and quantitative methods, as well as in mixing the two. 

Having applied multiple and multinomial logistic regressions, as well as multilevel and structural equation modelling in her PhD at the University of Surrey, UK, she started her research career as a quantitative social scientist. Since then, she has also worked on research projects with qualitative materials, supported by software, including the analysis of video during post-doctorate research with the QUIC team at the CAQDAS Networking Project. As co-investigator on an Economic and Social Research Council research grant at the University of Southampton, UK, Sarah explored both qualitative writings from the Mass Observation Archive and British Household Panel Survey data, to undertake longitudinal mixed methods analysis. 

Sarah has knowledge and experience of research in different contexts, having worked in the academic, voluntary, government and private sectors. She undertook two postdoctoral research fellowships, worked on contracts with government and small businesses, and in policy and practice-based research as Research Manager for the disability charity Scope. 

Throughout her jumping from sector to sector and from method to method, Sarah's constant has been her love of teaching and learning; finding ways of making the most of data. Her teaching experiences ranges from social capital, trust, volunteering, gender and disability issues, to methodology. She currently teaches introductory and advanced workshops in a range of CAQDAS packages, as well as teaching quantitative analysis using SPSS. Sarah teaches in both English and German.

Sarah has published in a range of fields with a range of methodologies. Please see the publications page for more details.

Nicholas Woolf, PhD.

Nicholas Woolf

Since 1998 Nick has taught qualitative research methods, instructed participants in several hundred CAQDAS workshops in the US and Canada, and consulted to numerous qualitative research projects, from individual Ph.D. dissertations to large multi-national projects.

After observing the challenges and the learning process of several thousand CAQDAS workshop participants, Nick developed a perspective and a set of principles for helping researchers more quickly gain the expertise that long-term users of CAQDAS develop through trail-and-error. He called this the Five-Level QDA method, which he presented as the keynote address at the 2013 ATLAS.ti User’s Conference in Berlin.

After this conference he worked with Christina Silver in further developing and offering the method as a CAQDAS pedagogy, and their textbook Qualitative Analysis using ATLAS.ti/MAXQDA/NVivo: The Five-Level QDA method was published by Routledge in 2017. Nick is now an emeritus advisor to Qualitative Data Analysis Services Ltd.

Jason Teal 

Jason Teal

Jason has been working in social research across central and local government, and in the charitable sector since 1999. He has experience with quantitative, qualitative and mixed methods and the use of dedicated software.

He has been involved in many aspects of business intelligence; for example designing and leading on research and consultation projects, developing and undertaking impact assessments and evaluations, and generating and implementing strategic and operational performance frameworks.

Jason’s particular interest is in breaking down the mystique of data for practitioners, enabling those less experienced with analytic techniques to get the most out of their data and ensure their results have impact. He has developed and delivered bespoke training in applied research design, data analysis and the effective communication of research findings to diverse practitioner audiences.  

It is important to Jason that data are understood and analysis is both useful and used - that audiences feel confident to look behind the headlines, understand the broader picture that is being painted, and how that data can be used in the planning and decision-making process.

For QDAS Jason undertakes coding and analysis and leads on business management. He is based in the UK. 


Thank you for a fantastic session. It is one of the best software training sessions I have had the pleasure of attending. It was a lovely interplay of method with technique while keeping the focus and making progress with the software.

Robert Galavan, Professor of Strategic Management
School of Business, National University of Ireland Maynooth