Data for: Stimulus orientation and the first-letter advantage

The "Data" spreadsheet (Data.xlsx) reports merged data from all the participants, along with a legend for the relevant variables (i.e., column labels). The other files are the "raw" logfiles provided by the e-prime software for each participant. Note that for participants 21 and 22 there are 2 instances: this was done because participants originally assigned to these number IDs performed at chance-level, and were thus replaced by running other two aprticipants with the same number IDs.