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Mean engagement scores for the three videos as a function of audio signal (standard errors in parenthesis)
| Activity | |||
|---|---|---|---|
| Monologue | Manual action | Misdirection | |
| Sound | 15.7 (0.713) | 17.3 (0.685) | 21.7 (0.741) |
| No sound | 13.2 (0.682) | 17.5 (0.655) | 21.3 (0.710) |
