Journal article

Challenges and solutions for N-of-1 design studies in health psychology

Dominika Kwasnicka, Jennifer Inauen, Wim Nieuwenboom, Johanna Nurmi, Annegret Schneider, Camille E Short, Tessa Dekkers, A Jess Williams, Walter Bierbauer, Ari Haukkala, Federica Picariello, Felix Naughton

HEALTH PSYCHOLOGY REVIEW | ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD | Published : 2019

Abstract

Theories of behaviour change and health behaviour change interventions are most often evaluated in between-person designs. However, behaviour change theories apply to individuals not groups and behavioural interventions ultimately aim to achieve within-person rather than between-group change. Within-person methodology, such as N-of-1 (also known as single case design), can circumvent this issue, though has multiple design-specific challenges. This paper provides a conceptual review of the challenges and potential solutions for undertaking N-of-1 studies in health psychology. Key challenges identified include participant adherence to within-person protocols, carry-over and slow onset effects,..

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