Data Science

October 31, 2025

The Invisible Threat to Your Brand Data: Unmasking High-Frequency Survey Takers

Bots aren’t the only threat to data quality. Meet the real issue: high-frequency survey takers completing 100+ surveys a day.

The Invisible Threat to Your Brand Data: Unmasking High-Frequency Survey Takers

If your brand metrics feel off, it might be more than just a feeling

Your team diligently manages trackers, concept tests, and pre/post campaign analyses. Through them all, you’re screening out the bots. You’re eliminating the speeders. You’re rooting out the straight-liners. But something’s been creeping into your data. Something that can’t be explained by campaign performance or sampling error.

It’s not the bots.
It’s not the obvious miscreants.
It’s real people attempting over 100 surveys a day. And they’re skewing your results.

At EMI, I’ve been meticulously studying the not-so-elusive high-frequency survey takers, what I’ll herein be referring to as the 100+ Club. While they may not have strong opinions on the topic of your research, their influence on your data is anything but neutral.

Meet the 100+ Club: Real People. Dubious Behavior.

Tracking respondent-level activity data across the sample ecosystem, I’ve found that these high-frequency survey takers make up around 4% of the sample ecosystem on average. However, I’ve observed an exponential increase in their incidence, with recent research indicating they sometimes comprise upwards of 10% of a given survey’s sample. And when they sneak into your study, they add a substantial degree of noise, ultimately impacting research outcomes and attendant business decisions.

Here’s their profile:

Demographics

  • Skew male, age 35–44
  • Overrepresented at income extremes

Device & Platform Bias

  • More likely to use mobile phones over desktops
  • Predominantly on Android OS, not iOS
  • Favor Chrome browsers

AI Early Adopters

The 100+ Club’s familiarity and usage of generative AI platforms is noteworthy:

  • 13 points higher awareness of ChatGPT
  • 16 points higher for Microsoft Copilot and Google Gemini
  • 53% used ChatGPT in the last 30 days (vs. 42% in the ≤10 group)

 

Gen AI Familiarity

Gen AI Usage

Why Their Ratings Are Misleading

These respondents aren’t just frequent survey takers; their predictable patterns can and do undermine data quality.

Brand Awareness Collapse

Across 23 different brands that are measured in EMI’s research-on-research, the 100+ Club’s average aided awareness was 18 points lower than respondents who attempted 10 or less surveys in a 24-hour period. In some brands that were measured, the gap increased to 20 points or more. If awareness is one of your key brand health metrics, it’s worth noting that this group drags it down and introduces unnecessary unease.

Aided Brand Awareness

 

Inflated Brand Ratings

In your brand funnel, awareness typically feeds into consideration, which in turn leads to favorability and intent. But the 100+ Club breaks that funnel completely.

Despite their lower claimed brand awareness, the high-frequency survey takers consistently rate brands more favorably than other respondent groups.

Average Brand Rating

Some notable examples:

  • Coca-Cola and McDonald's scored 10–15 points higher in brand favorability among 100+ Club members, even as their awareness was significantly lower.
  • United Airlines and American Express showed similar distortion. The respondents in the 100+ Club (who were least familiar with the brands) rated them disproportionately high.

Taken together, the findings indicate that these respondents aren’t truly evaluating your brand. They’re simply defaulting to a “positive” answer. Possibly because it’s the first response option they can click on. Possibly because they know that’s what you want to hear. Either way, the implication for brand teams is unequivocal:

Without knowing the source, brand ratings can’t be trusted as a true reflection of reality.

Eager to Purchase Everything

If your team is conducting concept testing and using purchase intent or acceptance rates to determine which ideas to advance, take note that high-frequency survey takers can artificially inflate your confidence.

In research-on-research, I’ve tested concepts that spanned everything from an eco-friendly grocery chain to high-end audio products. Across every category, the 100+ Club’s purchase intent hovered 5–10 points higher than that of lower-activity groups.

Average Concept Rating

This behavior can make it very difficult to identify which concepts are truly resonating. It reduces natural variance and attenuates the signal.

So, when a concept gets the “green light,” brand teams need to ask themselves:

Who actually ‘liked’ it…and do we trust this data?”

What Researchers Should Ask For

Even if you don’t run a panel or provide sample, you can still drive quality by asking the right questions to your sample providers, like:

  • “Do you track high-frequency behavior across surveys?”
  • “Can you filter respondents using mobile/Android/Chrome patterns?”
  • “Do you monitor for AI-assisted behavior?”
  • “What percent of your sample exceeds 100 attempts per day?”

Final Thoughts

Real people are inconsistent. Their brand awareness, purchase intent, and favorability can shift (often unpredictably and without obvious cause). If your data never reflects that – if every concept scores high, brand awareness is always steady, and purchase intent only climbs – it’s not a sign of perfection. It’s a warning. Take a closer look at who’s really answering before you make your next big decision.

data quality

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Disclaimer

The views, opinions, data, and methodologies expressed above are those of the contributor(s) and do not necessarily reflect or represent the official policies, positions, or beliefs of Greenbook.

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