# Diary Protocol

**Study:** Desirable Difficulty: Behavioral Design for Health Compliance  
**Version:** 1.0  
**Date:** 2024-02-21

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## Purpose

Capture daily coffee consumption, context, and satisfaction to:

1. Establish baseline consumption pattern (Weeks 1 to 2)
2. Track intervention effects (Weeks 3 to 6)
3. Measure habit persistence (Weeks 7 to 8)

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## Daily Log Template

Capture each cup at moment of consumption via iOS Shortcut. The "Brew a Cup" shortcut guides the full pour-over ritual hands-free (see `07_automation_flow.md`), then chains to "Log a Cup" for data capture.

### Required Fields

| Field            | Format                       | Example                    |
| ---------------- | ---------------------------- | -------------------------- |
| Date             | YYYY-MM-DD                   | 2024-01-15                 |
| Total cups today | Integer (auto-calculated)    | 4                          |
| Cup 1 time       | HH:MM                        | 07:30                      |
| Cup 1 context    | home / work / out            | home                       |
| Cup 1 method     | automatic / pour-over / cafe | automatic                  |
| Cup 1 SEQ        | 1 to 5 scale                 | 4                          |
| Cup 2 time       | HH:MM                        | 09:45                      |
| Cup 2 context    | home / work / out            | work                       |
| Cup 2 method     | automatic / pour-over / cafe | automatic                  |
| Cup 2 SEQ        | 1 to 5 scale                 | 3                          |
| ...              | (repeat for each cup)        | ...                        |
| Notes            | Free text (optional)         | "Felt rushed this morning" |

### SEQ Scale Reference

Rate each cup at moment of consumption (EMA design).

| Rating | Meaning                                                  |
| ------ | -------------------------------------------------------- |
| 1      | Very unsatisfied: this cup was frustrating or unpleasant |
| 2      | Somewhat unsatisfied: more negative than positive        |
| 3      | Neutral: neither satisfied nor unsatisfied               |
| 4      | Somewhat satisfied: good experience                      |
| 5      | Very satisfied: excellent, enjoyable cup                 |

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## Weekly Check-in Notes

Quick sync at end of week, usually 10-15 min over Zoom.

### Rough Script (adapted as needed)

"Ok so looking at the log... [X] cups. Sound about right?"

- Any cups that stood out? Good or bad?
- (Weeks 3+) Hows the pour-over going? Getting faster?
- Skip any cups you wanted? What happened?
- Energy/sleep anything weird?
- Anything else?

_Note: in Week 4 I forgot to record one day and filled it in the next day_

### Closing

"Thanks. Same time next week."

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## Compliance Expectations

- **Cup logging:** Must be captured within 5 minutes of consumption via iOS Shortcut ("Log a Cup" runs automatically after "Brew a Cup" completes)
- **Weekly interview:** Scheduled in advance; can be rescheduled within 48 hours
- **Missed cups:** Flag in notes; do not back-fill SEQ ratings afterward (count only)

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## Data Storage

- Daily logs stored in shared spreadsheet (participant has view access)
- Weekly interviews recorded (audio only) with consent
- All data anonymized in final analysis (participant = "Bob")