Millennial Fellowship · Field study in practical reasoning

Cognitive Decision Sandbox · shared notes on how people decide

CDS is a calm research lab for watching cognitive biases in the wild. We log the autopilot moves that steer daily choices, translate them into clear stories, and hand participants a bias map they can act on right away.

Open participant console

View study protocol

Observatory snapshot

Live telemetry window

Participants observed

Starting cohort

Scenarios completed

Starting cohort

Last refresh

Not yet sampled

Window length: 100 most recent anonymized sessions

Participants observed

Starting cohort

Scenarios completed

Starting cohort

Mean accuracy

Starting cohort

Session rating

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Starting cohort

Bias primer

Quick definitions before you dive in

Use these cards as a north star: what a bias is, why the sandbox exists, and what to expect from your run. We keep the language warm but grounded so anyone can explain it back to their team.

Cognitive bias in one sentence

Biases are the mental shortcuts that keep us fast but can blur the facts. They are not flaws—just autopilot moves we can name and steady.

Glossary · anchoring, confirmation, sunk cost, framing, more

Why CDS exists

The sandbox is our field notebook for watching those shortcuts in real conversations. Each run captures why a person paused, what nudged them, and which cue helped them reset.

Aim · map everyday decisions in plain language

What you get back

Twelve scenes, instant feedback, a reflection prompt, and an invite to share or revisit. You leave with a bias radar, accuracy trend, and a short takeaway you can act on.

Artifacts · scorecard, bias map, reflection memo

Live observatory

Telemetry that feeds the research journal

This is the public dashboard for our bias telemetry—how often anchors anchor, how quickly people recover, and how many participants add reflection notes. Everything is anonymized, but the patterns are real.

Accuracy distribution (rolling)

Normalized accuracy scores from the last 100 sessions.

Bias pulse

Top expressed heuristics

See which shortcuts showed up most in the last N sessions. Use the selector to widen the window and watch trends settle.

Window

Observatory synced · values anonymized at source

Protocol map

How a residency unfolds

Three phases keep the pace steady: welcome, explore, reflect. Blocks of text are short, bullets are plain, and every card reminds participants what will be asked of them.

Minute 0–2

Warm-up & intent

Pick the hat you’re wearing today, choose topics, and jot a quick intention. Framing your context makes the upcoming bias spikes easier to interpret.

Role + interest picker
Baseline confidence check
Quick intention note

Minute 3–8

Scene immersion

Twelve adaptive dilemmas surface one at a time. Each choice reveals a bias hint, timing note, and a “why it mattered” sentence you can replay later.

Adaptive branching
Live bias labels
Grounded vs. risky moves

Minute 9–12

Reflection & share-back

A short journal prompt, a bias radar, and an optional share link tie the loop. Use the memo to brief your team or revisit it before the next sprint.

Reflection depth score
Bias radar or bar pulse
Public share invite

Bias glossary

Six shortcuts we surface over and over

Keep this pocket list handy. Each tile names what triggers the bias plus one counter move we coach participants on. Use it as a cheat sheet before running CDS or debriefing a teammate.

How to read this

• Definition explains the mechanism in plain language.
• Counter move is the exact question or habit we cue during runs.
• Share this block when onboarding teams so everyone speaks the same shorthand.

Anchoring

Clinging to the first number, date, or hunch even when it’s unrelated to the decision.

Counter move

Blind the opener. Collect at least two independent estimates before you set a target.

Confirmation Bias

Searching for evidence that agrees with your position while skipping anything that contradicts it.

Counter move

Write the “what would prove me wrong?” test up front and go gather that data first.

Sunk Cost

Letting past time or money spent force you to keep going, regardless of present value.

Counter move

Ask: “If we started today, would we still choose this?” If not, pivot with a fresh plan.

Framing Effect

Landing on different conclusions just because the same outcome was worded positively or negatively.

Counter move

Translate every option into the same unit (probability, dollars, people affected) before judging.

Availability

Assuming a risk is common because it’s vivid or recent in memory, not because of the real odds.

Counter move

Pull the base rate or historical win/loss table and compare it to the headline story.

Bandwagon

Treating popularity as proof that an idea fits your context.

Counter move

List the problem you’re solving and the constraint you face; if they’re blank, pause the copycat move.

Participation

Join an upcoming residency

Each residency zooms in on a single question about cognitive bias—this round studies how journaling rhythm affects bias recovery. Expect two 25-minute sessions, one reflection, and a short share-back. Notes can be typed, drawn, or recorded.

See instrumentation

Snapshot

Current residency

Q4 · 2026

Focus

Bias surfacing + reflective cadence

Documentation

Shared with fellows & advisors via private memos.