Question

Questions/Tasks

1. Explain in a paragraph or two the concept of signal detection.

2. What is the independent variable(s) in this experiment? (Sensation and Perception: Signal Detection)

3. What is the dependent variable in this experiment?

(Sensation and Perception: Signal Detection)

4. Define “Hit”, “Miss”, “False Alarm” and “Correct Rejection” in the context of this experiment.

(Sensation and Perception: Signal Detection)

Answer 1

1. Signal detection is the process of understanding about the psychological means of perceiving the physical stimulus. Signals are present all around us, but we are selecting some of them, we are not focusing on some of them, and we some times will not identify some of them. The process of make a selection into the process of filtering on signals around us. The processes could be termed as hit, miss, correct rejection, false alarm. Hit is when the signal is present and response is made. Miss is when there is signal present but we will not recognize it, as if we get a miss call in our phone. correct rejection is when there is no signal present and we will not identify it. When we identify a signal without its actual stimulus it is called false alarm.

2. Independent variable in the study is alarm given to check whether it makes any change in the dependent variable.

3. Dependent variable is the study is the response collected to know whether there is correct signal detection happening in the case.

4. Hit is when the sound is present and the person is able to identify it

Miss is when the sound is present but the person is not identifying it

false alarm is when the person identify the sound without it actually presented.

correct rejection is when there is no sound presented and the subject is not detecting it