By nbUOS - 8/14/2016
i know this is more of an spss question but i imagine that other IAT users come across the same problems so why not ask:
i want to check my IATs reliability and here is where it goes wrong:
for a reliability analysis i need different "items" to be put together. only in my IAT output i get only one colum with all my items being summed up under it.
now i am delving into data restructuring but cant seem to get it to work so that i get the variable names per item.
does it have to be this difficult? i imagine there is a way everyone calculates their IATs reliability but i just cant find answers online (only happily reported alphas and or half split reliabilities without mention of the how to do this...)
cheers
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By Dave - 8/15/2016
What people commonly do is to simply calculate the correlation between the D-scores for the shorter combined "practice" blocks (expressions.da) and the longer combined "test" blocks (expressions.db); that's essentially a variation of "split half" reliability.
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