Bellezza & Bellezza (1989): Error Similarity Analysis
This index evaluates error similarity analysis (ESA), namely estimating the probability that a given pair of examinees would have the same exact errors in common (EEIC), given the total number of errors they have in common (EIC) and the aggregated probability P of selecting the same distractor. Bellezza and Bellezza utilize the notation of k=EEIC […]