| Clue | Source | Date |
|---|---|---|
| A bumpy approach to one's way of thinking? | The Times Cryptic | 09 Sep 2024 |
| Phony ogler involved in dealing with bumps (10) | ||
| The head's study | ||
| Discredited study of skull shapes — her only GPO (anag) | The Guardian Quick | 21 Aug 2023 |
| Fanciful science guidebooks originally brought in help Roy on broadcast | ||
| Skull-centered pseudoscience | Wall Street Journal | 02 Oct 2015 |
| Skull-centered pseudoscience | ||
| Skull study | ||
| Head-bump study | ||
| Study of skull bumps. |