Market research diary studies

Some of the richest insights come not from what people recall after the fact, but from observing how their thoughts, feelings and behaviours evolve in the moment. Diary studies provide a powerful window into this lived experience, capturing episodes as they unfold in participants' own words. 

What does a diary study involve?

Participants are recruited according to agreed screening criteria and then asked to record their experiences, reflections, or behaviours over a set period, usually through digital tools such as mobile apps, online platforms or video diaries. All aspects of the study are designed by DJS Research and are tailored to meet the needs of your project and audience. This allows our researchers to capture in the moment data, revealing the realities of decision making, routines, and emotions as they happen, rather than relying solely on retrospective accounts.

Where can diary studies add value?

Diary studies are used widely in health, education, and consumer research to explore processes, journeys, or behaviours that unfold over time. They offer an authentic, participant led view of experience and can complement interviews or focus groups by providing greater depth and context.

Typical applications include:

• Customer journeys: Understanding how needs, attitudes and behaviours evolve across multiple touchpoints, from initial awareness to post-purchase reflection.
• Product and service development: Capturing real world feedback as consumers interact with a product or service in their daily lives, highlighting moments of delight, frustration or confusion.
• Behavioural change research: Tracking how habits, motivations or barriers shift over time in response to interventions, communications or environmental factors.
• Emotional experience tracking: Gaining access to feelings and reflections that might be forgotten, minimised or difficult to express in a single interview setting.

How diary studies support qualitative research

Diary studies add texture and chronological depth to qualitative insight. They allow participants to record experiences in their natural environments, leading to more authentic and unfiltered data. As a ‘pre-task’ diaries help participants notice their own behaviours before discussing them in a group or depth interview. Researchers can then analyse entries to identify themes, patterns, and emotional touchpoints, before following up with in-depth interviews or workshops to explore the underlying ‘why’.

This combination of real time data collection followed by reflective discussion creates a rich narrative that links behaviour with context and meaning.

Diary studies at DJS Research

At DJS Research, we design diary studies that fit the objectives and audience of each project, from small exploratory samples to large scale programmes. Depending on the topic, participants might capture entries through photos, videos, voice notes, or short written reflections.

Our researchers use specialist online platforms to manage participation, reminders, and data collection, ensuring a seamless experience for participants and a structured, analysable dataset for our analysis. We often integrate diary tasks within broader mixed mode programmes, combining them with interviews, workshops, or ethnographic methods to bring clients closer to their audiences’ lived realities.

From exploring daily media consumption to recording financial behaviours and tracking sustainable shopping habits, our diary-based methodologies help uncover not only what people do, but why as well as understanding how they feel about their experiences.