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Overview of experimental conditions; “P” stands for “protagonist”.
| Condition | Subject in S1 | Subject in S2 | Subject/Perspective in S3 |
| A: FID, prominent | P1 | P1 | P1 |
| B: FID, non-prominent | P2 | P2 | P1 |
| C: Control, subject change | P2 | P2 | P1 |
| D: Control, no subject change | P2 | P2 | P2 |
