Audit Cognitive Tendency Checklist

---
name: audit-cognitive-tendency-checklist
description: Use when reviewing a specific investment decision before committing capital — checking it against a checklist of named psychological tendencies (incentive-caused bias, social proof, commitment/consistency bias, authority influence, and others) that could be distorting the judgment behind it.
source: Charlie Munger, "The Psychology of Human Misjudgment" (speech, USC Business School, 1995; compiled in "Poor Charlie's Almanack," 2005)
tags: [finance, investing, cognitive-bias, decision-audit, munger, checklist]
related: [audit-investment-thesis, apply-lollapalooza-effect-detection, apply-behavioral-investing-discipline, apply-dual-process-diagnostic]
---

# Audit Cognitive Tendency Checklist

Before committing capital to a specific investment decision, check it against Munger's named checklist of psychological tendencies — incentive-caused bias, social proof, commitment and consistency bias, authority influence, and others — to catch distortions in judgment that a purely financial or thesis-based review can miss.

## Why This Is Best Practice

**Adopted by:** Charlie Munger delivered "The Psychology of Human Misjudgment" as a speech at USC Business School in 1995, later compiled in "Poor Charlie's Almanack" (2005), cataloging roughly two dozen named psychological tendencies that systematically distort human judgment, drawn from psychology research and Munger's own decades of business and investment decision-making. He explicitly recommended running specific, consequential decisions through this checklist as a discipline distinct from — and complementary to — financial analysis.
**Impact:** Munger repeatedly illustrated, through specific historical business and investment case studies, how decisions that looked financially sound on paper were driven substantially by an unexamined psychological tendency — a company's leadership continuing a failing strategy due to commitment/consistency bias, an investor following a recommendation primarily due to the recommender's authority rather than independent verification, or a decision shaped by incentive-caused bias in the party providing the analysis. Explicitly checking a decision against the named tendency list surfaces these distortions in a way that reviewing only the financial thesis does not.
**Why best:** A financial thesis review checks whether the numbers and the business argument are sound; it does not by default check whether the *process* that produced the decision was itself distorted by an identifiable psychological tendency. Running through Munger's specific, named checklist as a discrete step — distinct from the financial and business-quality review — catches distortions that a purely analytical review structurally can't, because the distortion often lives in how the analysis was arrived at, not in the analysis's internal logic.

Sources: Munger, "The Psychology of Human Misjudgment" (1995 speech; compiled in "Poor Charlie's Almanack," 2005)

## Steps

### Step 1: Run the decision through the tendency checklist explicitly, as a distinct step

After completing the financial and thesis analysis (see `audit-investment-thesis`), deliberately review the decision against specific named tendencies, including at minimum:
- **Incentive-caused bias** — is anyone providing information or a recommendation about this decision compensated or otherwise incentivized in a way that could distort their view (a broker, a promoter, an analyst covering a company their firm banks for)?
- **Social proof** — is the appeal of this investment substantially because others are buying it, rather than from independent analysis?
- **Commitment and consistency bias** — has a public or psychological commitment already been made (a stated thesis, a prior public recommendation) that creates pressure to justify continuing rather than to reassess honestly?
- **Authority influence** — is the decision leaning on a credible-seeming authority's endorsement in place of independent verification?
- **Availability bias** — is a recent, vivid event (a dramatic gain or loss, a recent news story) being weighted more heavily than the more relevant base-rate evidence?

### Step 2: For each tendency flagged, isolate its specific influence on the decision

Where a tendency is identified as plausibly present, explicitly separate what portion of the decision's appeal rests on that tendency versus on independently verifiable analysis — a decision that holds up when the identified tendency's influence is set aside is on firmer ground than one that doesn't.

### Step 3: Re-verify conclusions independently of any flagged authority or social-proof source

If authority influence or social proof is identified as a meaningful factor, deliberately re-derive the conclusion from independently verifiable facts and analysis, without relying on the credibility of the source that originally supplied it — a conclusion that only holds because of who said it, not because of what was actually verified, has not really been tested.

### Step 4: Check for incentive misalignment in every party who contributed input to the decision

For each source of information or analysis feeding into the decision — company management, sell-side analysts, financial media, personal contacts — identify what that source's incentives actually are, and weight their input accordingly rather than assuming good-faith objectivity by default.

### Step 5: Treat the checklist as a discipline applied to consequential decisions specifically, not a routine formality

Reserve this explicit checklist review for genuinely consequential decisions (a significant position, a departure from an established plan) rather than applying it as a rote formality to every minor action — the value comes from genuine, focused scrutiny on decisions where a psychological distortion would be most costly.

## Rules

- Run the tendency checklist as a distinct step from financial and thesis analysis, not folded into it — the two catch different kinds of problems.
- For any tendency flagged as present, explicitly test whether the conclusion holds independently of that tendency's influence.
- Weight every information source by its actual incentive structure, not by assumed objectivity.
- Reserve this discipline for genuinely consequential decisions where a psychological distortion would be costly, not as a routine check on every minor action.

## Examples

**Incentive-caused bias caught:** An investor is considering a position based substantially on a compelling recommendation from a source who, on closer examination, has a financial incentive tied to increased trading volume or assets under management in that specific position. Running the checklist surfaces this incentive misalignment, prompting the investor to re-verify the thesis independently rather than relying on the recommendation's credibility.

**Social proof and authority influence identified together:** An investor notices their interest in a popular investment is driven substantially by its widespread adoption among a peer group and endorsement from a well-known public figure, rather than from independently verified analysis. Explicitly isolating these two tendencies, the investor re-derives their view from first-principles research, and the conclusion changes materially once the social-proof and authority-driven appeal is set aside — a clear signal that the flagged tendencies were doing more work than the underlying analysis.

## Common Mistakes

- **Treating financial thesis review as sufficient without a separate psychological-tendency check** — a sound-looking financial argument can still be substantially the product of an unexamined bias in how it was arrived at.
- **Assuming information sources are objective by default** — every source has some incentive structure; failing to check it means potentially weighting biased information as if it were neutral.
- **Applying the checklist as a rote, superficial formality** — genuine value comes from focused scrutiny on consequential decisions, not from mechanically checking boxes on every minor action.
- **Failing to re-derive a conclusion independently once a tendency is flagged** — identifying that social proof or authority influence is present does no good if the conclusion isn't actually re-tested without relying on that influence.

## When NOT to Use

- For routine, low-consequence decisions where the overhead of a full tendency review exceeds the decision's actual stakes.
- As a substitute for the underlying financial and business-quality analysis — see `audit-investment-thesis`; this checklist catches a different category of problem (process distortion) than thesis quality does.
- When the decision has already been independently verified from first-principles sources with no reliance on any single potentially-biased input — the checklist's value is in catching *unexamined* influence, not in second-guessing conclusions already reached through a rigorous, independent process.

> **Finance disclaimer:** This skill encodes professional best practices for educational purposes. It is not financial advice. Consult a licensed financial advisor before making investment decisions.