L4A: Information Processing Stages - Stimulus Identification

Question 1

Answer 1

10
(Use AE)

Question 2

What type of RT situation is depicted in the following graphic, where a left foot response is required in response to seeing a blue triangle?

Answer 2

Discrimination (Go/No-Go)

Question 3

How many stage(s) of processing are missing
from a choice RT task?
A. 4
B. 3
C. 2
D. 1
E. 0

Answer 3

E. 0

Question 4

What 4 factors affect stimulus ID?

Answer 4

1. Clarity & Intensity
2. Modality
3. Familiarity
4. Predictability

Question 5

Factors affecting stimulus ID:

What is Clarity & Intensity?

Answer 5

Question 6

Factors affecting stimulus ID:

What is Modality?

Answer 6

Auditory simple RT is faster
than Visual simple RT

Visual Cortex further back in the brain

Question 7

Factors affecting stimulus ID:

What is (Pattern) Familiarity?

Answer 7

• Experts can recognise patterns of play more quickly than novices. (speed chess)
• Experience provides more exposure to meaningful patterns

Question 8

Factors affecting stimulus ID:

What is Predictability? (2 Factors)

Answer 8

• Temporal anticipation (when)
• Event/spatial anticipation (where)

Question 9

Factors affecting stimulus ID:

What is Temporal Anticipation?

Answer 9

Temporal anticipation (when)

• Predicting the arrival/timing of a stimulus
• Most related to savings in stimulus identification
  – e.g., anticipating the snap in football

Question 10

What is Event/spatial anticipation?

Answer 10

Event/spatial anticipation (where)

• Predicting the spatial location of a stimulus
• Most related to savings in response selection
• e.g. anticipating the location of a forehand return in tennis

Question 11

100m sprint start example: temporal anticipation,
in effect bypassing the stimulus identification stage

Answer 11

RT < 100 ms is considered a false start.
Sprinter ‘reacted’ before GO signal.
Anticipating the GO before it’s happened