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Yet understanding of benchmarking data does increase with tenure in the business. We would expect confidence to increase with understanding, but instead the more critical - or more cynical - we become.
So does that mean you shouldn't trust external data sources? Of course not. But it does mean you should approach their use with caution.
What should you be mindful of in making benchmarking comparisons?
According to our surveyed researchers, the foremost of these is questionnaire consistency. (See Fig 3)
- Having consistent scales or answer categories is the most important consideration regardless of tenure.
- Question wording is also critical to maintain comparability.

Data collection methodology is also highly relevant.
- Ensuring the same methodology is used (web vs. phone, for example) is important to two-thirds of researchers.
- Field period - or making sure the timing overlaps - is less critical.
To the extent that these items are consistent between your data and the external data, there is no question that making these comparisons is of great value. But what are the ramifications if these items don't align?
Question text, scale and response category differences can be difficult to overcome. We've had a lot of experience converting data collected with one scale to match a new scale.Making those comparisons becomes even trickier in combination with other differences such as question wording or data collection timing.
Also bear in mind how missing data (don't know, not applicable, refused) are handled in both studies - scale conversion won't overcome a fundamental difference in the way the data are reported.

This way you can match the question wording and scales to the normative data. Barring that, designate a subgroup of sample to administer the key questions to match the syndicated data.
If the screening or sampling criteria are different, there isn't a lot you can do to overcome those differences. But there are a few options to bring value:
- The most important thing to do is to recognize whether differences exist. If you are comparing your product's buyers to buyers of the category in general, ask questions about how those buyers were screened (Recent buyers - how recent? First purchase or repeat only? Adult only or adult and teen? US only or international?) Understand the "universe" to make informed decisions.
- Next, consider filtering your own data to match that of the benchmarking data. Suppose you want to compare consumers in your footprint to normative data, but the normative data was only collected in a sub-region of your footprint. Filter your own data to match. You won't get a total market view, but you will have comparative data for specific regions.
- Similarly, if the provider of the benchmarking data can cut their data in different ways, you may be able to filter their data to match your own.
Finally, other methodological disparities, such as field period timing, data collection methodology, or sponsorship identification, also impact comparability of data sets. Our experience tells us that changing from non-identified to identified sponsor not only can increase survey response rate but also have a positive impact on the ratings. Competitive ratings collected with a blind or neutral sponsor can suffer in comparison. And asking competitor ratings only among your own customers can lead to a skewed view of the competitive landscape.
So what's the bottom line?
Dig into the methodology of the benchmarking data, and as much as you can, keep an analytic eye for discrepancies that can mar your comparisons.
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