SLIDES FOR SIGNAL DETECTION THEORY LECTURE follow sdt handout, mostly on the board four possible outcomes (hits, misses, etc.) Information Shift Bias shift On board: internal noise and external noise On board: internal response noise-alone prob of occurence curve add signal-plus-noise PO curve add spikes per sec scale, then erase it draw arrow for criterion draw vertical line for criterion, label hits and misses new PO curves, label false alarms and correct rejections new PO curves, shift arrow and write down hit and false alarm rates ROC curve new PO curves with greater separation, add second ROC new PO with less spread On board: d'=separation/spread Draw in family of ROCs and label with different d' values