diary-study-plan

To design a diary study, define research goals and success metrics, then establish a 1-4 week duration with 8-15 screened participants. You must specify daily or event-triggered entry prompts, choose capture methods like text or photo, and plan onboarding and check-in cadences.

To design a diary study, define research goals and success metrics, then establish a 1-4 week duration with 8-15 screened participants. You must specify daily or event-triggered entry prompts, choose capture methods like text or photo, and plan onboarding and check-in cadences.

A diary study typically requires 8-15 participants who have been properly screened and compensated. Planning for this specific participant count helps manage attrition and ensures data quality throughout the longitudinal data collection period.

You analyze diary study data by applying a predefined analysis framework to code and synthesize text, photo, audio, or video entries across participants. This process identifies themes, trends, and insights from the longitudinal qualitative data.

Use a longitudinal diary study instead of a one-off interview when you need to evaluate user experiences during a product rollout, feature adoption, or customer journey over time, capturing real-world behavior as it happens rather than relying on recall.