No effect of multi-axis dot pattern symmetry on subjective duration
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Description: Previous work has reliably shown that symmetrical or regular stimuli are judged as lasting longer than asymmetrical or irregular ones, even when actual duration is matched. This effect has been replicated with different methods and stimuli types, both in the UK and Japan. We aimed to a) replicate the effect of symmetry on subjective duration, and b) assess whether it was further modulated by the number of reflectional axes. There was no evidence for this. The failure to replicated cannot be explained by reduced statistical power or enhanced ceiling effects. There is no obvious stimulus based explanation. Mindful of the reproducibility crisis and file drawer problems in psychology, other time perception researchers should be aware of this null result.