Noam Sarna, Matan Mazor, and Reuven Dar | Open Access at Clinical Psychological Science
Fully-anonymized experimental data is available here.
You can try experiment 1 by clicking here.
You can try experiment 2 by clicking here.
A fully reproducible version analysis pipeline in RMD format is available here
To ensure preregistration time-locking (in other words, that preregistration preceded data collection), we employed randomization-based preregistration. We used the SHA256 cryptographic hash function to translate our preregistered protocol folder (including the pre-registration document) to a string of 256 bits. These bits were then combined with the unique identifiers of single subjects, and the resulting string was used as seed for initializing the Mersenne Twister pseudorandom number generator prior to determining all random aspects of the experiment. This way, experimental randomization was causally dependent on, and therefore could not have been determined prior to, the specific contents of our preregistration document (Mazor, Mazor & Mukamel, 2019).
protocol sum: f57b521e9203c84f0edf016bc8c87a953c9d2b7a795f17be40c058ed379a5b6c
Preregistration document from the protocol folder
protocol sum: 228116017b7c37c092a878c5f8f5a5f19a4a9ceecfe61497a59cfe2cdcbcfcae