Figure 1.
Instrumental task during training.
One of two fractal cues was associated with a keyboard button (depicted in the yellow squares) and a food outcome (savory biscuits or chocolate). Food outcomes were available on a variable interval 10 (VI-10) schedule. Trials were presented randomly, lasting between 20 and 40 seconds each within a six minute block. Rest trials in which no reward is available were randomly presented in between trials, lasting for 10 seconds. Cumulative earnings were displayed at the end of each block.
Table 1.
Participant Characteristics.
Figure 2.
Difference in mean rates of responding for actions predicting valued relative to devalued outcomes over the last block of training and extinction trials in controls compared to social anxiety disorder patients.
Error bars depict standard error of the mean difference between controls and patients. *p<.05.
Table 2.
Hierarchical Multiple Regression Analyses Predicting Treatment Outcome from Goal-Directed Actions at Prior to Treatment.