when fewer responses are given than the length of the the list, the response list is padded out with empty strings (''). These are showing up as repeats in the repeats column of the CFR_allSs data set.

These are not repeats in the spirit of truly duplicate output items and should be changed to zeros.

when a zero-length response is given due to hitting the Enter key when no text has been entered, no First Press (FP) time is recorded. When this is followed by a non-zero length response, the RT and CRT calculations are disrupted due to the response time being NA.

These should be removed from the data somehow. The difference between onset and return key press is usually very short (most are < 300 ms).

another alternative to removing is to sort them to the end of the output list when calculating RT.