Cumulative Link Mixed Model fitted with the Laplace approximation

formula: depvar ~ Difficulty * Sound + (1 + Sound | pp) + (1 | stim)
data:    datafile3

 link  threshold nobs logLik  AIC     niter      max.grad cond.H 
 logit flexible  615  -762.33 1554.66 1461(4387) 2.23e-04 7.3e+02

Random effects:
 Groups Name          Variance  Std.Dev.  Corr          
 pp     (Intercept)   8.469e-01 9.203e-01               
        Sound1quiet   8.061e-03 8.978e-02 -0.549        
        Sound3forward 2.112e-02 1.453e-01  0.711  0.198 
 stim   (Intercept)   8.721e-13 9.339e-07               
Number of groups:  pp 30,  stim 20 

Coefficients:
                              Estimate Std. Error z value Pr(>|z|)   
Difficulty2Hard               -0.84031    0.28942  -2.903  0.00369 **
Sound1quiet                    0.04542    0.22338   0.203  0.83889   
Sound3forward                 -0.14167    0.24323  -0.582  0.56026   
Difficulty2Hard:Sound1quiet    0.08116    0.38269   0.212  0.83204   
Difficulty2Hard:Sound3forward  1.24156    0.44853   2.768  0.00564 **
---
Signif. codes:  0 *** 0.001 ** 0.01 * 0.05 . 0.1   1

Threshold coefficients:
    Estimate Std. Error z value
1|2  -2.6298     0.2696  -9.754
2|3  -1.1159     0.2451  -4.552
3|4   0.6096     0.2410   2.529
