# The Diagnostic Ledger

QuietStride Learning • Academic study reflection

Use one entry per study error. This ledger is a learning aid, not an exam outcome guarantee. Do not add patient identifiers or confidential case details.

## Import and reuse

Import this `.md` file as a Markdown page in Notion, then duplicate the blank entry for each new mistake. Import the accompanying CSV separately to create a table; set **Review date** to a Date property and **Decision** to a Select property if useful. Import behavior may vary by Notion version. The CSV contains one empty entry and one clearly labelled fictional example; delete either when no longer needed. No account, email address or newsletter signup is required to use these files.

## Blank entry - duplicate this section

### Context
- **Entry title:**
- **Track:** Undergraduate foundations / Admissions / CPTE
- **Topic or course:**
- **Date:**
- **Source or page:**

### 1. The Mistake
**Answer picked:**

**My reasoning:**

**Emotional state (optional; keep private):**

For example: rushed, uncertain or confident. Leave blank if you prefer. Remove this field before sharing your journal if you do not want to share it.

### 2. The Source Evidence
**Question and given facts:**

**Source or page and evidence that supports or contradicts my answer:**


**Assumption I added or information I overlooked:**


**Trap:** Correlation as cause / reversed condition / ignored unit / unsupported recall / other

### 3. The Structural Repair
**Corrected principle and the reasoning step I will change:**


**Next-time rule:** Before I conclude ..., I will check ...

**Fresh retry question:**


**Retry answer without notes:**


**How I checked the answer:**


### 4. Revisit
- **Review date:**
- **Decision:** Revisit / explain unaided / apply to a new example
- **Reason for decision:**
- [ ] I can name the assumption or missed evidence.
- [ ] I can explain the corrected reasoning without notes.
- [ ] I can apply the reasoning to a fresh example.

---

## Fictional worked example - evidence or assumption?

- **Entry title:** Optional revision guide and quiz scores
- **Track:** Undergraduate foundations
- **Topic:** Interpreting study evidence
- **Date:** Not assigned; fictional example
- **Source:** Original constructed example, not a real study

### The Source Evidence
In a fictional class, students who chose a new revision guide scored higher on a later quiz than students who did not choose it. No random assignment or earlier quiz scores were reported. Does this prove that the guide caused the higher scores?

### The Mistake
**Answer picked:** Yes.

**My reasoning:** The guide users scored higher, so the guide must have caused the difference.

**Emotional state (optional, fictional):** Rushed and confident. Keep this private or omit it before sharing.

### Assumption I added
I assumed the groups were comparable before using the guide. Motivation, prior knowledge or study time could differ. Those possibilities were not measured in the prompt.

### The Structural Repair
**Trap:** Correlation as cause.

**Correction:** The result is an association, not proof of a causal effect. It also does not prove that the guide has no effect; the causal question remains unresolved.

### Next-time rule
Before I make a causal claim, I will check how groups were formed, what was measured and which alternative explanations remain.

### Fresh retry question
A fictional club reports that members who attended optional review sessions earned higher scores. Are the sessions proven effective?

### Retry answer without notes
No. Self-selection and unreported starting differences remain possible explanations.

### Check and revisit
Compare the answer with the stated facts and the association-versus-causation distinction in assigned course materials. Choose a review date after a gap. Revisit if the distinction is still unclear; move on when you can explain it unaided and apply it to a new example.