Randomisation modes
The Randomiser tab in Path Logic offers three modes. They appear for both pages and sections. Wording changes slightly (blocks vs pages vs subsections), but the meaning is the same.
Open Path Logic → Randomiser on the page or section you want to configure.
1. No randomisation
Section titled “1. No randomisation”Everyone sees the same content in builder order.
Use when:
- You have a fixed script or task sequence
- Order matters (instructions before tasks, screener before main study)
- You only need routing via display logic or branching
Example: A screener page, then three fixed task pages, then thank you.
2. Randomise order
Section titled “2. Randomise order”Everyone sees all items, but the order is shuffled per participant.
Use when:
- You want to counterbalance question or page order
- Length is fixed but order bias is a concern
- Every item must still be seen (unlike subset mode)
Example: Four rating questions on one page — each participant answers all four, but in a random order.
Not the same as: Presenting a subset. Shuffle keeps the full set; subset hides items.
3. Present a subset
Section titled “3. Present a subset”Each participant sees K items picked from a pool of N (for example, 1 of 3 pages, or 2 of 5 blocks). Items not picked are hidden for that participant.
Use when:
- The study would be too long if everyone saw everything
- You are running a between-subjects design where each person gets one version
- You want exposure sampling without naming groups yet
Important: By default, subset mode is anonymous random sampling — the platform picks K items from the pool, but there is no named “Group A” stored for analysis. If you need groups in results, enable Randomisation groups.
Where each mode applies
Section titled “Where each mode applies”| Scope | What gets randomised | Guide |
|---|---|---|
| Page | Content blocks on one screen | Page randomisation |
| Section | Pages or subsections in a section | Section randomisation |
Choosing between shuffle and subset
Section titled “Choosing between shuffle and subset”| Question | If yes → |
|---|---|
| Must every participant see every item? | Randomise order |
| Can participants skip some items entirely? | Present a subset |
| Do you need named groups in results? | Present a subset + Randomisation groups |
| Is assignment from a URL or sample field? | Display logic instead |