TITLE:    Swets, Tanner, & Birdsall 1961 data - fit of the unequal variance SDT model;
DATA:     FILE IS C:\Users\DeCarlo\Documents\My Research\SMP\swets61_mplus.dat;
VARIABLE: NAMES ARE trial stim resp;
          CATEGORICAL = resp;
          within = stim;
          cluster = trial;
ANALYSIS: type = twolevel random; link=probit;
          estimator=ml;
MODEL:    %within%
          s | resp on stim;
          %between%
          s ON ; resp@0;
OUTPUT:   tech1;