What is Barrier Analysis?
A comprehensive overview of this evidence-based methodology
Barrier Analysis is a rapid assessment tool developed in 1990 by Tom Davis to identify behavioral determinants so that more effective behavior change strategies can be developed. The approach draws from several behavior change theories including the Health Belief Model and the Theory of Planned Behavior.
The methodology focuses on identifying what is preventing a target group from adopting a positive behavior (the "barriers"), as well as the factors that facilitate or would facilitate their adoption of the behavior (the "enablers"). By comparing those who practice the behavior (Doers) with those who don't (Non-Doers), Barrier Analysis helps program planners build more effective and targeted interventions.
Typically conducted in 10-14 days, Barrier Analysis uses a standardized questionnaire to interview 45 Doers and 45 Non-Doers of a particular behavior. The assessment explores 12 potential determinants of behavior that can block or enable adoption of positive behaviors.
The Barrier Analysis Process
A step-by-step overview of how Barrier Analysis is conducted
Define the Behavior & Context
Identify the precise behavior to be studied and define the specific context, priority group, and details of the behavior.
Develop the Questionnaire
Create a standardized questionnaire that explores the 12 determinants of behavior change through open-ended and probing questions.
Collect Field Data
Interview approximately 45 Doers (those who practice the behavior) and 45 Non-Doers (those who don't) from the priority group.
Code & Analyze Responses
Code responses, identify statistically significant differences between Doers and Non-Doers, and determine which determinants are most influential.
Design Targeted Interventions
Use findings to create behavior change interventions that address the most significant barriers and leverage the identified enablers.