Significant results were obtained both for the Within model (N = 24, Z = 1.67, p < .05, one-tailed) and for the Copy model (N = 24, Z = 4.27, p < .001, onetailed).
the effect was much larger for the Copy model, a conclusion which is confirmed by comparing the differences of differences between the two models (N = 24, Z = 4.27, p < .001, one-tailed).