perception 1

Question 1

What is the signal detection theory(SDT)?

Answer 1

a basic perceptual task is to determine if a stimulus is present or absent

Question 2

what is sensitivity refer to in SDT?

Answer 2

ability to discriminate signal from noise

Question 3

what is bias refer to in SDT?

Answer 3

tendency to provide one answer over the other

Question 4

to make SDT data make sense you need results with what?

Answer 4

with hit and miss when target present and false alarm and correct rejection when target is absent

only need one from each

Question 5

what does sensitivity depend on?`

Answer 5

distinctiveness and variability of internal responses(overlapping of distributions)

depends on stimulus, sensory system, attention ect…

Question 6

what does bias depend on?

Answer 6

how lopsided the evidence must be to say that the target is absent or present

can depend on relative cost of misses versus false alarm