Formative Research

Formative research is investigation conducted during the development phase of an intervention, program, or policy to inform its design, refine its components, and identify potential barriers to implementation. Unlike summative evaluation, which assesses whether a completed intervention works, formative research shapes the intervention before it is finalized and tested.

Interventions designed without input from the target population or without understanding the implementation context can fail. Formative research reduces this risk by grounding the design in evidence about the needs, preferences, behaviors, and circumstances of the people the intervention is intended to serve. It identifies cultural barriers, language issues, logistical challenges, and design features that might reduce effectiveness or acceptability. Public health programs, educational curricula, technology products, and clinical interventions all benefit from formative research. When formative research is skipped, researchers may invest years and millions of dollars in a definitive trial of an intervention that was never well suited to its intended audience.

Formative research typically employs qualitative and mixed methods approaches. The process often begins with a needs assessment that identifies the problem, its causes, and its context. Methods include literature reviews, analysis of existing data, key informant interviews with stakeholders and experts, focus groups with members of the target population, surveys, direct observation, and community mapping.

Based on the initial findings, researchers develop a preliminary version of the intervention (or its components) and test it informally with small groups from the target population. This might involve presenting draft materials (brochures, app screens, lesson plans) and gathering feedback on clarity, appeal, and relevance. The intervention is then revised based on this feedback and tested again in an iterative cycle.

The process is explicitly iterative: design, test, revise, test again. Each cycle incorporates what was learned from the previous one. The goal is not to measure effectiveness (that comes later, in a definitive trial, usually after feasibility or pilot work) but to optimize the intervention's design before committing to a larger evaluation.

Frameworks for complex interventions recognize this work. The UK Medical Research Council framework for developing and evaluating complex interventions (updated in 2021) treats developing or identifying the intervention as one of its core phases, alongside feasibility, evaluation and implementation, although a research program can begin at any phase, depending on the key uncertainties. The output is typically a refined intervention protocol, accompanying materials, an implementation guide, and a logic model or theory of change that explains how the intervention is expected to produce its effects.

Formative research overlaps with formative evaluation, the program evaluation term for evaluation used to improve a program, for example by checking that it is feasible, appropriate and acceptable before it is fully implemented. Summative evaluation is the counterpart of formative evaluation: it judges a program once it is in place. Usage varies between fields, and some authors use formative research and formative evaluation interchangeably.

Formative research is most useful when developing a new intervention, adapting an existing intervention to a new population or setting, designing educational or communication materials for a specific audience, or planning a program that requires community engagement and participation. It is particularly important for complex interventions with multiple components, for interventions targeting culturally diverse populations, and for technology based interventions where usability affects effectiveness.

A common error is treating formative research as an optional step that can be skipped to save time. This often leads to interventions that are poorly matched to the target population's needs and preferences. Another mistake is conducting formative research with convenience samples that do not represent the intended beneficiaries (for example, testing materials with graduate students when the target audience is low literacy adults). Some researchers conduct formative research but fail to use the findings to modify the intervention, treating it as a box checking exercise rather than a genuine design input. Finally, inadequate documentation of the formative research process makes it difficult for others to understand how design decisions were made and to adapt the intervention for other contexts.

A research team developing a mobile app to support medication adherence in patients with HIV conducts formative research over 4 months. They interview 25 patients and 10 clinicians, conduct 4 focus groups, and observe medication routines in 15 patients' homes. Key findings: patients want customizable reminder times (not a fixed schedule), they are concerned about notifications that might reveal their HIV status to others, and many have limited data plans. The team redesigns the app to use discreet notifications, offline functionality, and flexible scheduling. A subsequent usability study with 20 patients confirms that the redesigned app is acceptable and usable, and it proceeds to a randomized trial.