Perceived value and PERVAL: measuring without confusing value, price and willingness to pay.
Evidence status
What was reproduced, and what it does not prove.
The educational specification and fixture are verified. The Python run reproduces the mean of 3.6 and rejects a count of scores other than four or a value off the scale. It reproduces no PERVAL psychometric scale.
- Technical specification of the teaching value profile, specification in French (opens in a new tab)
v1, 31 August 2026 · CC BY 4.0 · specification in French · Method document written by marketing-mix.net. The figures are illustrative: they are not market measurements.
Key distinctions
Three conditions before calculating.
A multidimensional construct
A single average often hides different profiles. The dimensions must stay visible before any synthesis.
A scale adapted to the context
The original items are not universal. Their wording, their language and their population must be documented and pre-tested.
A clear boundary with price
Perceived value can inform a price hypothesis, but replaces neither a willingness-to-pay measurement nor a demand experiment.
Method
Building a usable measure in four steps
- 01Define the object and the audience
Set offer, use, moment, population and comparison alternative; without that perimeter, two scores are not comparable.
- 02Choose and pre-test the items
Keep the dimensions needed, source the wordings and check comprehension, variance and ceiling effects.
- 03Report the profile before the index
Show each dimension, sample size, dispersion and missing data; the mean is only a descriptive summary.
- 04Connect to a testable decision
State the action considered and the additional evidence required — comparison, concept test, price experiment or longitudinal follow-up.
Editable perceived-value profile
Enter four comparable scores from 1 to 5. The tool returns a descriptive mean and blocks the result if a dimension is missing.
The dimension profile remains the priority. This score is neither a price nor a willingness to pay.
An identical average score can hide two value propositions
Illustrative example: quality 4.2; emotion 2.6; social 4.5; value for money 3.1, on a scale from 1 to 5.
Descriptive mean = (4.2 + 2.6 + 4.5 + 3.1) / 4 = 3.6. The profile mainly reveals an emotional weakness despite a high social signal.
The result opens an investigation into the experience and the context of use. On its own it does not justify a price increase or decrease.
Acceptance conditions
What must be true to act.
- 01
Block the synthesis if a required dimension is absent or outside the declared scale.
- 02
Compare only measurements taken with the same instrument, the same audience and the same context.
- 03
Show the dimensions and the dispersion before any average or weighting.
- 04
Test separately any conclusion about price, demand or causality.
Limits
What this analysis does not prove.
- This page authorises neither the full reproduction of a protected scale nor its use without local validation.
- Self-reported scores are sensitive to context, wording and response bias.
- An average constitutes neither a monetary value nor a brand valuation.
- PERVAL does not replace a willingness-to-pay measurement or a market test.
References