Master's thesis · IAE Poitiers (CEPE) · 2026
Nutri-Score and snacks for 3-6 year olds: what parents actually do in the aisle
A qualitative study with 13 parents. Everyone knows the Nutri-Score, yet it carries little weight at the moment of choice. Five competing forces explain why.
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Thesis cover
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The 7-step snack-aisle decision model
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Influence matrix by profile
01Context
The Nutri-Score has been displayed in France since 2017 and awareness is very high. Yet most packaged children's snacks are rated C, D or E, and little is known about how much the label really weighs when a parent shops for a child aged 3 to 6, an age when food preferences take shape.
02Challenge
How do parents trade off the Nutri-Score, price, their children's requests and their own values in the snack aisle? And what place does the label really hold in the final decision?
03My role
I carried out the whole study: framing, literature review, interview guide design, recruitment, conducting and transcribing interviews, analysis and writing.
04Approach
- Literature review on nutrition labelling, consumer decision-making and children's food socialisation.
- Five exploratory working hypotheses.
- Diversified sample of 13 parents of children aged 3 to 6 in France (income, purchase frequency, family context).
- Semi-structured guide piloted on two preliminary interviews, then refined during fieldwork.
- Phone interviews conducted between January and July 2025, fully transcribed.
- Inductive thematic coding, then a typology and a decision model.
05Deliverables
- A research thesis of about 70 pages.
- A typology of 5 parent profiles.
- A 7-step model of decisions in the snack aisle.
- An influence matrix of 6 factors by profile.
- Recommendations for brands, retailers and public health actors.
06Results
- Every parent knows the Nutri-Score, but the gap between stated support and real influence on purchases is systematic.
- The label often works less as a buying guide than as a marker of "good parenting" and a way to ease guilt.
- Five forces compete with it: the child's wishes, price, cultural cues (organic, natural, homemade), mental load and family values.
- The child is a real co-decision-maker, even when not in the store. Snack time is also a moment of family peace.
- For brands: target both audiences (nutritional quality for parents, enjoyment for children), reformulate transparently, and speak to the relational side of snack time.
- Thesis defended in June 2026.
Five parent profiles
An analytical grid, not a statistical segmentation.
The nutrition strategist
Plans and optimises. The Nutri-Score is a central tool among others.
The contextual pragmatist
Adapts criteria to the situation. The most common profile.
The emotional peacekeeper
Puts family peace first. The label stays symbolic.
The culturally anchored
Heritage and values first: organic, homemade. The label is marginal.
The budget-constrained
Price decides. The label informs but cannot steer.
Influence matrix by profile
Weight of each factor in the decision, from 0 (none) to 4 (decisive).
| Profil | Nutri-Score | Price | Child's wishes | Cultural values | Mental fatigue | Visual marketing |
|---|---|---|---|---|---|---|
| Nutrition strategist | 4 | 1 | 1 | 2 | 0 | 0 |
| Contextual pragmatist | 2 | 2 | 2 | 2 | 2 | 2 |
| Emotional peacekeeper | 1 | 1 | 4 | 1 | 3 | 3 |
| Culturally anchored | 1 | 2 | 2 | 4 | 1 | 1 |
| Budget-constrained | 0 | 4 | 3 | 1 | 3 | 2 |
Source: thesis, table 5.
The 7 steps of the snack-aisle decision
An analytical model. In real life, steps can overlap or be skipped.
- 1
Initial intention
Wanting to do the right thing, a shopping list, established principles.
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Facing the shelf
Too many options, promotions, visual overload. The intention weakens.
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Non-nutritional cues
Packaging, licensed characters, colours, multibuy offers, before the score is even read.
- 4
The child steps in
Real or anticipated. The decision becomes relational.
- 5
Cognitive shortcut
Picking whatever settles the situation: fatigue, limited time.
- 6
Final trade-off
The dominant criterion wins: health, family peace, price, values or habit.
- 7
Post-purchase rationalisation
"I'll make up for it tonight by cooking vegetables."
Documents
Full thesis (in French)
Literature review, methodology, findings, typology, recommendations.
PDF · 70 pages · 1.9 MB
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