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A/B test ideas

€170K in A/B Tests Lost to Cognitive Load

Minus €170K in combined loss during the test periods. These tests added information, broke a familiar format, or introduced a new decision point. Cognitive Load doesn't announce itself.

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€170K in A/B Tests Lost to Cognitive Load

What's inside

What you get

It hides in grey hex codes, extra cart lines, and helpful nav categories.

Even if none of them felt risky, all of them lost.

That's why I documented every single one.

Here's what you'll get:

7 real losing tests across PDP, PLP, cart drawer, and navigation

Individual CR drops ranging from -1.36% to -4.30%

The exact changes that hurt conversion and why

Revenue loss per test

The cognitive load pattern hiding behind every failed hypothesis

We ran the tests, measured the damage, and documented the lesson.

𝗪𝗮𝗻𝘁 𝘁𝗵𝗲 𝗳𝘂𝗹𝗹 𝗯𝗿𝗲𝗮𝗸𝗱𝗼𝘄𝗻?

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2. 2. Comment "LOAD"

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The CRO agency behind 250+ of the world's leading online businesses

Whether high-growth startups or global leaders in e-commerce, travel, insurance, or retail, we consistently drive measurable revenue increases.

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Grover
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Natural Elements
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Tourlane
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Holy
Junglück
PV
Wunschgutschein
Motel A Mino
Mofakult
Bruna
Buah
Waterdrop
Purelei
Giesswein
Schiesser
Livefresh
Blackroll
The Female Company
Ryzon
1 Kom Ma 5
Kickz
Horizn Studios
Seeberger
Luca Faloni
Priwatt
T1tan
Snocks
Plantura
NatureHeart
Zahnheld
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Ironmaxx
NKM
Oceansapart
Omhu
Send a Friend
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BGA
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Trusted by 250+ brands

  • Strauss
  • Koro
  • Sunday Natural
  • The Body Shop
  • Grover
  • Hello Fresh
  • Natural Elements
  • AG1
  • Bluebrixx
  • Woom
  • Hornbach
  • Tourlane
  • Congstar
  • Holy
  • Junglück
  • PV
  • Wunschgutschein
  • Motel A Mino
  • Ryzon
  • Kickz
  • The Female Company
  • Livefresh
  • Schiesser
  • Horizn Studios
  • Seeberger
  • Luca Faloni
  • Zahnheld
  • Snocks
  • Bruna
  • NatureHeart
  • Priwatt
  • Jumbo
  • NKM
  • Oceansapart
  • Omhu
  • Blackroll
  • 1 Kom Ma 5
  • Purelei
  • Giesswein
  • T1tan
  • Buah
  • Ironmaxx
  • Waterdrop
  • Send a Friend
  • Fitjeans
  • Mofakult
  • Plantura
  • BGA
  • Coop
DRIP / Apex

Prediction-based experimentation for online shops from €100k a month.

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