Contextual inquiry is costly but can yield dense situated evidence
Aliases: field research cost · information yield · contextual data density
What it is
Contextual inquiry can produce high information yield per session because action, setting, artifacts, relationships, and explanation are aligned. Its cost includes access, scheduling, travel, privacy work, and intensive analysis. “Highest density” is not a universal ranking; the investment pays when context materially determines behavior.
Why it happens
The field aligns multiple forms of evidence in time but generates heterogeneous material. Access permissions, bystander consent, and workflow interruption slow recruitment, while media and artifacts raise deidentification and analysis cost. Without focused questions and a recording frame, rich evidence becomes an unmanageable archive.
Studying it
Assess yield through decision-relevant findings, unique contextual factors, and analysis hours rather than note count. A pilot can compare incremental evidence from contextual inquiry, remote interviews, or diaries. Record failed access, prohibited spaces, and uncovered periods because missing context defines the claim boundary.
Where it stops holding
Attitudes, terminology, or simple concept reactions may not require field access. Diaries can be more efficient for dispersed or rare behavior, and simulation safer for hazardous settings. More detail is not stronger inference: one rich case cannot estimate prevalence and remains open to overinterpretation.
Applying it
- Use contextual inquiry when place, tools, or coordination can change the answer.
- Pilot one session to estimate access, capture, transcription, and analysis cost.
- Define required tasks, artifacts, and exceptions and avoid unfocused recording.
- Review incremental decision evidence per total hour and move unsuitable questions to lighter methods.