Design = 2 x 2 Number of trials per stimulus = 178 180 178 180 MARGINAL ANALYSES ***************** *** Top across Bot *** ------------------------- Bot MRI probabilities: level P1 P2 1: 0.685 0.770 2: 0.800 0.650 (z_obs): ( 2.4401**) ( 2.4588**) NOTE: MRI fails if ABS(z_obs) >= 1.645 or equivalently p<.10, 2-tailed Bot Signal Detection Marginal Estimates: level d'12 cr12 beta12 1: 1.221 0.483 0.86 2: 1.227 0.842 1.32 (z_obs): ( 0.031 ) ( 2.479**) CONCLUSIONS: PS ~DS ----------------------------------------------- *** Bot across Top *** ------------------------- Top MRI probabilities: level P1 P2 1: 0.770 0.922 2: 0.562 0.900 (z_obs): ( 4.2041**) ( 0.6487 ) NOTE: MRI fails if ABS(z_obs) >= 1.645 or equivalently p<.10, 2-tailed Top Signal Detection Marginal Estimates: level d'12 cr12 beta12 1: 2.158 0.738 0.48 2: 1.437 0.156 0.45 (z_obs): ( 3.081**) ( 4.149**) CONCLUSIONS: ~PS ~DS ----------------------------------------------- ______________________________________________________________________ *** NOTES ***: for all significance tests, * is p<.10, 2-tailed ** is p<.05, 2-tailed (no stars) is n.s. ~ means NOT (e.g., ~PS means PS failed) ? means POSSIBLY (e.g., ?~DS means DS possibly failed) ______________________________________________________________________ CONDITIONAL ANALYSES ******************** Sampling Independence Joint Probability (observed) vs. ********************* Product of Marginals (predicted by SI) 2-way SI ******** Response 11 12 21 22 Stim 11 0.472 0.213 0.298 0.017 0.528 0.158 0.242 0.072** 12 0.017 0.783 0.061 0.139 0.062** 0.738 0.016** 0.184 21 0.022 0.208 0.539 0.230 0.129** 0.101** 0.432** 0.337** 22 0.000 0.350 0.100 0.550 0.035-- 0.315 0.065 0.585 --------------------------------------------------------------- NOTE: * p<.10; ** p<.05, two-tailed; -- probs are too small --------------------------------------------------------------- SUMMARY: sampling independence has failed in the following cells stimulus = 11 response = 22 stimulus = 12 response = 11 stimulus = 12 response = 21 stimulus = 21 response = 11 stimulus = 21 response = 12 stimulus = 21 response = 21 stimulus = 21 response = 22 ___________________________________________________________ Signal Detection MICROANALYSES ****************************** *** Top | Bot *** Top levels: 1 & 2 ------------------------ subject's response on Bot: 1 2 Marg. CONCLUSIONS stimulus @ level 1 on Bot d' : 2.038 1.517** 1.221 crit: 0.288 1.453** 0.483 SI => ~DS; and ?~PI beta: 0.225 2.866 0.856 <- betas not tested for equivalence stimulus @ level 2 on Bot d' : 1.981 1.316 1.227 crit: -0.792 1.034** 0.842 ~SI but =d's => ?PI and ?~DS beta: 0.029 1.640 1.323 <- betas not tested for equivalence *** Bot | Top *** Bot levels: 1 & 2 ------------------------ subject's response on Top: 1 2 Marg. CONCLUSIONS stimulus @ level 1 on Top d' : 2.529 2.120 2.158 crit: 0.492 1.611** 0.738 SI => ~DS; =d's => ?PI beta: 0.142 3.218 0.479 <- betas not tested for equivalence stimulus @ level 2 on Top d' : 1.477 1.547 1.437 crit: -1.296 0.527** 0.156 ~SI but =d's => ?PI and ?~DS beta: 0.050 0.683 0.445 <- betas not tested for equivalence ______________________________________________________________________ *** NOTES ***: for all significance tests, * is p<.10, 2-tailed ** is p<.05, 2-tailed (no stars) is n.s. ~ means NOT (e.g., ~PS means PS failed) ? means POSSIBLY (e.g., ?~DS means DS possibly failed) ______________________________________________________________________