I'm very new at statistics, so excuse me if my questions are to simple or obvious.
I have a dataset with response times for two conditions. These response times were converted into a binary score of either 0 (absence of the effect) or 1 (presence of the effect).
The experiment is designed in 7 blocks. For each block participants receive a 1 or 0. The total score for each subject can range from o to 7.
So, I want to do a split-half reliability to see if the criteria I used to evaluate the presence of the effect is a reliable indicator of what I'm studying. At first I just split the column of 1s and 0s in half and correlated it, but that give me a nonsense value (something like 0.0009) so I'm missing something here. Conceptually I know I should correlate two parts of the test that are supposedly measuring the same thing, but I'm having difficulties at figuring out exactly how to do this for this dataset.
Any help is much appreciated.