Lecture 3b, Information Processing I

Question 1

3 Stages of Information Processing

Answer 1

stimulus identification: receive sensory information & detect, discriminate and classify information (what is relevant)

response selection: decide on plan of action and translate stimulus to response

response programming: organize and prepare response & send right motor commands

Question 2

Stimulus Detection and Stimulus Discrimination

Answer 2

• together this is the stimulus identification stage
  stimulus detection: detect that a stimulus has occurred
  stimulus discrimination: recognize what stimulus it is (discriminate between stimuli)
  -> stage 1a and 1b

Question 3

Response Selection

Answer 3

select appropriate
-> stage 2

Question 4

Response Programming

Answer 4

program the response
-> stage 3

Question 5

What two stages of information processing can we calculate the duration for using 3 types of RT tasks?

Answer 5

stimulus discrimination and response selection

Question 6

Subtractive Method: Simple RT task (what stages are involved?)

Answer 6

• 1 stimulus and 1 response
  what stages are involved? stimulus detection and response programming - 2 of the 4 stages are needed

Question 7

Subtractive Method: Choice RT task (what stages are involved?)

Answer 7

• 2 stimuli and 2 responses
  what stages are involved: stimulus detection, stimulus discrimination, response selection, response programming - all 4 stages are need in choice RT task

Question 8

Subtractive Method: Go/No-go RT task (what stages are involved?)

Answer 8

• many stimuli and 1 response
  what stages are involved? stimulus detection, stimulus discrimination, and response programming - 3 of four stages are needed (not response selection)

Question 9

Subtractive Logic: How can we calculate for discrimination time?

Answer 9

if we know the RTs for simple RT task and go/no-go discrimination RT task we can calculate for stimulus discrimination
- find a task that has response selection and one that does not (but has every other stage)…then subtract

Question 10

Subtractive Logic: How can we calculate for selection times?

Answer 10

if we know the RTs for go/no-go discrimination RT task and choice RT task we can calculation for selection times
- find a task that has stimulus discrimination and one that does not (but has every other stage)…then subtract