Individual ROC curves of redundant target performance

Each plot shows the mean hit rate vs. false alarm rate for the last six sessions of the five different biasing phases of the experiment (black squares - Different biasing conditions; black circles - Equal biasing condition; black triangles - Same biasing conditions) and for successive 3-session blocks across the entire experiment (open diamonds). The solid curves represent the best-fitting functions based on signal detection theory. The dashed lines represents the best-fitting function based on high threshold theory.