Design = 2 x 2 Number of trials per stimulus = 100 100 100 100 MARGINAL ANALYSES ***************** *** Top across Bot *** ------------------------- Bot MRI probabilities: level P1 P2 1: 0.840 0.810 2: 0.730 0.780 (z_obs): ( 1.8237* ) ( 0.4382 ) 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: 1.872 0.994 1.12 2: 1.385 0.613 0.90 (z_obs): ( 1.710* ) ( 1.891* ) CONCLUSIONS: ~PS ~DS ----------------------------------------------- *** Bot across Top *** ------------------------- Top MRI probabilities: level P1 P2 1: 0.890 0.700 2: 0.730 0.700 (z_obs): ( 2.8538**) ( -0.0772 ) 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: 1.751 1.227 1.85 2: 1.137 0.613 1.05 (z_obs): ( 2.164**) ( 2.870**) 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 0.730 0.110 0.160 0.000 0.748 0.092 0.142 0.018-- 12 0.190 0.540 0.110 0.160 0.219 0.511 0.081 0.189 21 0.040 0.150 0.690 0.120 0.139** 0.051** 0.591 0.219** 22 0.020 0.200 0.280 0.500 0.066* 0.154 0.234 0.546 --------------------------------------------------------------- NOTE: * p<.10; ** p<.05, two-tailed; -- probs are too small --------------------------------------------------------------- SUMMARY: sampling independence has failed in the following cells stimulus = 21 response = 11 stimulus = 21 response = 12 stimulus = 21 response = 22 stimulus = 22 response = 11 ___________________________________________________________ Signal Detection MICROANALYSES ****************************** *** Top | Bot *** Top levels: 1 & 2 ------------------------ subject's response on Bot: 1 2 Marg. CONCLUSIONS stimulus @ level 1 on Bot d' : 2.516 1.551** 1.872 crit: 0.916 1.691** 0.994 SI => ~DS; and ?~PI beta: 0.423 4.134 1.115 <- betas not tested for equivalence stimulus @ level 2 on Bot d' : 1.842 1.310* 1.385 crit: 0.341 0.744** 0.613 SI => ~DS; and ?~PI beta: 0.343 1.123 0.896 <- 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' : 1.764 2.097 1.751 crit: 1.122 1.863** 1.227 SI => ~DS; =d's => ?PI beta: 1.526 5.515 1.849 <- betas not tested for equivalence stimulus @ level 2 on Top d' : 0.531 1.406** 1.137 crit: -0.805 1.044** 0.613 SI => ~DS; and ?~PI beta: 0.567 1.616 1.052 <- 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) ______________________________________________________________________