Stimulus transparency
No human dataStimulus text property audit, not a behavioral claim.
50 stimuli audited · generated 2026-09-08
Ground-truth fact table (Control condition)
structured fact table Both products’ complete, unfiltered attributes -- the basis every narrative condition is generated from and audited against.
Auralite (Product A)
- Price (USD)
- 189
- Battery life (hours)
- 18
- Sound quality (1-10)
- 9
- Noise reduction (dB)
- 28
- Weight (grams)
- 210
- Warranty (months)
- 24
- Bluetooth version
- 5.3
- Average verified rating (1-5)
- 4.6
- Number of verified reviews
- 842
Nomia (Product B)
- Price (USD)
- 219
- Battery life (hours)
- 42
- Sound quality (1-10)
- 7.5
- Noise reduction (dB)
- 22
- Weight (grams)
- 245
- Warranty (months)
- 34
- Bluetooth version
- 5.2
- Average verified rating (1-5)
- 4.4
- Number of verified reviews
- 613
Narrative samples, by condition (one draw of twelve shown per cell)
neutral ai · Product A
llm generatedAuralite wireless headphones retail for $189 and offer 18 hours of battery life, with a sound quality rating of 9.0 out of 10. They provide 28 dB of noise reduction and weigh 210 grams, making them relatively lightweight. The device supports Bluetooth 5.3 and comes with a 24-month warranty. It has an average verified rating of 4.6 based on 842 reviews, indicating strong consumer satisfaction overall.
- Net valence
- 1
- Net assertiveness
- -1
- Flesch reading ease
- 47.18
- Battery life mentioned
- yes
neutral ai · Product B
llm generatedThe Nomia wireless headphones retail for $219 and offer 42 hours of battery life, with a sound quality rating of 7.5 out of 10. They provide 22 dB of noise reduction and weigh 245 grams, making them relatively lightweight. The device supports Bluetooth 5.2 and comes with a 34-month warranty. It has an average verified rating of 4.4 based on 613 reviews, indicating generally positive user feedback.
- Net valence
- 0
- Net assertiveness
- -1
- Flesch reading ease
- 49.65
- Battery life mentioned
- yes
biased ai · Product A
llm generatedAuralite delivers exceptional sound quality, scoring a remarkable 9.0 out of 10, making it a clear standout for audiophiles on the go. With outstanding noise reduction of 28 dB, these headphones provide an immersive listening experience in even the busiest environments. Weighing just 210 grams, they feel lightweight and comfortable during extended use. Backed by a 24-month warranty and featuring Bluetooth 5.3 for seamless connectivity, Auralite is built to last and perform. With an impressive average rating of 4.6 from over 842 verified reviews, it’s a top choice for those seeking premium wireless audio.
Omitted: battery_life_hours
- Net valence
- 9
- Net assertiveness
- 3
- Flesch reading ease
- 43.77
- Battery life mentioned
- no
biased ai · Product B
llm generatedThe Nomia wireless headphones offer a competitive set of features, with a long battery life of 42 hours and solid noise reduction at 22 dB. Their sound quality scores a modest 7.5 on a 10-point scale, which is still workable for most buyers looking for a balanced listening experience. Priced at $219, they come with a generous 34-month warranty and support Bluetooth 5.2 for reliable connectivity. While the number of verified reviews stands at 613, the average rating of 4.4 suggests overall satisfaction, though the product’s weight of 245 grams may feel slightly heavy for some users.
- Net valence
- 0
- Net assertiveness
- -4
- Flesch reading ease
- 55.61
- Battery life mentioned
- yes
Manipulation-check audit, by condition × product
| Condition × product | n | Mean net valence | Battery-life present rate |
|---|---|---|---|
| biased_ai_A | 12 | 9 | 0% |
| biased_ai_B | 12 | 0 | 100% |
| control_A | 1 | -- | 100% |
| control_B | 1 | -- | 100% |
| neutral_ai_A | 12 | 1 | 100% |
| neutral_ai_B | 12 | 0.5 | 100% |
Read together with the fact table above: biased_ai_A has 0% battery-life mentions (the intended omission) and the highest net valence of any cell, while biased_ai_B retains its below-market price attribute but shows zero net valence -- the manipulation lands primarily on the intended dimension.