Here, we explore how voluntary actions shape temporal preparation. In 4 experiments, participants responded to visual stimuli that appeared after a delay, sometimes triggered by their actions and sometimes externally. (4/7)
We found that: (1) When people triggered an event themselves, their RTs were slower than when the same event was externally triggered; (2) This was especially true for shorter delays (FPs), but the difference disappeared for longer FPs. (5/7)
Interestingly, this effect only showed up when FPs varied within a block. When FPs stayed constant, the difference vanished! This suggests that voluntary actions interact with uncertainty in temporal preparation. (6/7)
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