Bias Brain Press
Cover of Cognitive Biases: Judgments and Perceptions, Volume 1 - a coloring book by Mitch Platt

Volume 1 · A coloring book by Mitch Platt

Cognitive Biases:
Judgments & Perceptions

A coloring book about the shortcuts your brain takes and the ridiculous ways they fail. No mandalas. No flowers. Just flawed thinking to be colored.

Buy on Amazon Get Free Sample Pages
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The Book

Your brain is lying to you right now. It does it constantly, automatically, and usually in ways you never notice.

Fifteen biases across 64 pages, 8.5 by 11 inches. Each one gets a Definition, History, Variant, Usage Note and Example on one page, and a full page to color on the other. Two blank pages after every spread, so nothing bleeds through onto an illustration.

Also a decent gift for the overthinker, the therapist, the student, or the person who is definitely wrong and definitely not listening.

Buy Volume 1 Available at Amazon

Free Sample Spreads

Two complete spreads from Volume 1 - Status Quo Bias and Pro-Innovation Bias - free to download and print. Each spread is one text page and one coloring page. Click any page to preview it full-size.

Status Quo Bias - text page with definition, history, and example
Status Quo Bias · Text Page
Status Quo Bias - coloring page of a prehistoric hunter-gatherer scene
Status Quo Bias · Coloring Page
Pro-Innovation Bias - text page with definition, history, and example
Pro-Innovation Bias · Text Page
Pro-Innovation Bias - coloring page of a robot chef in a gadget-filled kitchen
Pro-Innovation Bias · Coloring Page
Download Both Spreads (PDF)

One 4-page PDF, print-ready at 8.5×11″. Free for personal use.

Release October 1, 2026

Volume 2 — Social Dynamics

Get your art on the cover, win the entire Cognitive Biases Series, see details below.

  1. Download the page.
  2. Color it.
  3. Scan your image to ensure it can be used. High quality photos will be ok.
    How to photograph it
    • Press the page flat — a book on each corner works.
    • Daylight near a window, no direct sun. No flash: it blows out the paper and kills your color.
    • Hold the camera straight above the centre of the page, not at an angle.
    • Fill the frame with the page. Don’t crop into the art.
    • Watch for your own shadow falling across the paper.
    • Shoot at your camera’s highest quality setting.
  4. Please make sure your file is high resolution or it will not be able to be used. If you have a GIMP file, Adobe file or something similar, please export as a standard image file.
  5. Email your submission to colormycover@biasbrain.press. If your file is too large to be attached it is best to use a Google Drive or Microsoft OneDrive share link.
Download the Page Submit Here

Winner decided September 25

Didn’t catch this one in time? Get on the list and you’ll know when the next cover opens up.

About Bias Brain Press

I color. I train AI.

I got tired of waiting for someone else to make the thing I actually wanted to buy. The coloring book market has roughly 100,000 titles that all share the same DNA: mandalas, flowers, steampunk girls, and swear words, repeat. I searched for something different and found nothing. So I decided to build it myself, but I had one rule, if I'm doing this, it's going to be a quality product. Not a side hustle. Not a quick throw-together. The idea sat for two years while I worked my day job training large language models. I'm into philosophy and human behavior so I thought, a cognitive biases coloring book... Did I mention I can't draw?

What I am good at is prompting AI models with meticulously engineered instructions to make them output exactly what I want. Four years of training AI models taught me how to make machines do precise, repeatable work. So I built an app... well, I instructed an LLM to build it. An app that calls the top image generation APIs. I wrote a set of system instructions that dictates the style of the art before I even say a word. The app scales the image to the correct aspect ratio, and exports print-ready resolution. Two months of iterating prompts and finding the right model for the job. I rebuilt the app from scratch three times, but finally, I was ready to start working.

Only then I realized, a bias happens inside a person's head. How was I going to get this onto a single page, in one frame, with no words? Fifteen times? It never crossed my mind how hard this would be to get right, but I also never intended to just throw together some AI slop. I wanted to make something genuinely interesting and something I'd actually want to color.

This is Bias Brain. Volume 1 is just the start.

Contact Me

Questions, press, or colored-in pages you're proud of:

mitch@biasbrain.press