AP PSYCHOLOGY

Detailed explanation-1: -If the signal is present the person can decide that it is present or absent. These outcomes are called hits and misses. If the signal is absent the person can still decide that the signal is either present or absent. These are called false alarms or correct rejections (CR) respectively.

Detailed explanation-2: -in signal detection tasks, an incorrect observation by the participant that a signal is present in a trial when in fact it is absent. The false-alarm rate is the proportion of incorrect yes responses in such a task.

Detailed explanation-3: -A Hit rate was the ratio of the number of Hits to the number of Hits plus Misses, and a False Alarm rate was the ratio of the number of False Alarms to the number of False Alarms plus Correct Rejections (see Table 3).

Detailed explanation-4: -Signal detection theory predicts how one detects the presence of weak stimuli amidst background noise. Detection of stimuli depends on the intensity of the stimuli, environmental noise, response criteria, physical factors such as fatigue or healthiness, and psychological factors such as motivation or expectations.

Detailed explanation-5: -They propose a theory called signal detection theory. This holds that there are no absolute thresholds but rather, detection of a stimuli depends on the energy of the stimulus and the costs and benefits to you of detecting that stimulus.