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: 0.433 0.950 2: 0.533 0.783 (z_obs): ( -1.1934 ) ( 2.6315**) 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: 1.477 -0.168 0.26 2: 0.867 0.084 0.74 (z_obs): ( 1.525 ) ( 1.096 ) CONCLUSIONS: PS DS ----------------------------------------------- *** Bot across Top *** ------------------------- Top MRI probabilities: level P1 P2 1: 0.700 0.533 2: 0.783 0.450 (z_obs): ( 0.9428 ) ( -1.0078 ) 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: 0.608 0.524 1.14 2: 0.658 0.784 1.35 (z_obs): ( 0.147 ) ( 1.042 ) 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 0.233 0.200 0.467 0.100 0.303 0.130 0.397 0.170 12 0.133 0.400 0.333 0.133 0.249* 0.284 0.218 0.249* 21 0.033 0.017 0.750 0.200 0.039 0.011-- 0.744 0.206 22 0.017 0.200 0.533 0.250 0.119** 0.098* 0.431 0.352 --------------------------------------------------------------- NOTE: * p<.10; ** p<.05, two-tailed; -- probs are too small --------------------------------------------------------------- SUMMARY: sampling independence has failed in the following cells stimulus = 12 response = 11 stimulus = 12 response = 22 stimulus = 22 response = 11 stimulus = 22 response = 12 ___________________________________________________________ Signal Detection MICROANALYSES ****************************** *** Top | Bot *** Top levels: 1 & 2 ------------------------ subject's response on Bot: 1 2 Marg. CONCLUSIONS stimulus @ level 1 on Bot d' : 1.291 1.857 1.477 crit: -0.431 0.431** -0.168 SI => ~DS; =d's => ?PI beta: 0.249 0.397 0.262 <- betas not tested for equivalence stimulus @ level 2 on Bot d' : 1.310 0.814 0.867 crit: -0.566 0.674** 0.084 ~SI but =d's => ?PI and ?~DS beta: 0.202 1.243 0.738 <- 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' : 0.771 0.363 0.608 crit: 0.097 0.929** 0.524 SI => ~DS; =d's => ?PI beta: 0.800 1.312 1.143 <- betas not tested for equivalence stimulus @ level 2 on Top d' : 1.857 0.335** 0.658 crit: 0.431 0.805 0.784 ~SI & ~=d's => ?~PI and ?~DS beta: 0.397 1.238 1.349 <- 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) ______________________________________________________________________