Design = 2 x 2 Number of trials per stimulus = 60 60 60 60 MARGINAL ANALYSES ***************** *** Top across Bot *** ------------------------- Bot MRI probabilities: level P1 P2 1: 0.683 0.667 2: 0.467 0.817 (z_obs): ( 2.3658**) ( 1.7993* ) 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: 0.908 0.477 1.02 2: 0.819 -0.084 0.67 (z_obs): ( 0.258 ) ( 2.397**) CONCLUSIONS: PS ~DS ----------------------------------------------- *** Bot across Top *** ------------------------- Top MRI probabilities: level P1 P2 1: 0.867 0.783 2: 0.483 0.783 (z_obs): ( 4.8061**) ( -0.1108 ) 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: 1.894 1.111 1.36 2: 0.742 -0.042 0.74 (z_obs): ( 3.155**) ( 4.428**) 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 0.650 0.033 0.217 0.100 0.592 0.091 0.274 0.042 12 0.183 0.283 0.033 0.500 0.101 0.366 0.116* 0.418 21 0.300 0.033 0.183 0.483 0.161* 0.172** 0.322* 0.344* 22 0.117 0.067 0.100 0.717 0.040* 0.144 0.177 0.640 --------------------------------------------------------------- NOTE: * p<.10; ** p<.05, two-tailed; -- probs are too small --------------------------------------------------------------- SUMMARY: sampling independence has failed in the following cells stimulus = 12 response = 21 stimulus = 21 response = 11 stimulus = 21 response = 12 stimulus = 21 response = 21 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' : 0.367 0.843 0.908 crit: 0.674 -0.674** 0.477 SI => ~DS; =d's => ?PI beta: 1.198 0.397 1.021 <- betas not tested for equivalence stimulus @ level 2 on Bot d' : 0.924 1.018 0.819 crit: 1.020 -0.354** -0.084 SI => ~DS; =d's => ?PI beta: 1.675 0.416 0.668 <- 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' : 1.929 2.014 1.894 crit: 1.657 0.480** 1.111 SI => ~DS; =d's => ?PI beta: 3.802 0.346 1.363 <- betas not tested for equivalence stimulus @ level 2 on Top d' : 0.933 0.565 0.742 crit: 1.282 -0.598** -0.042 SI => ~DS; =d's => ?PI beta: 2.139 0.608 0.736 <- 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) ______________________________________________________________________