perception

Question 1

main functions of sensory and perceptual systems

Answer 1

1) detecting that a stimulus is present
2) detecting a change in a stimulus
3) identifying what objects or events led to a stimulus

Question 2

sperling - whole report

Answer 2

• recall all items from the initial display
• 4.3 items recalled
• NOT influenced by # of items in the display

Question 3

sperling - partial report

Answer 3

1) tone is presented during the blank screen
2) the pitch of the tone indicates which row the subject was supposed to report

• 75% recalled
• # of items reported increased as the # of items in the display decreased

Question 4

sperling - conclusions

Answer 4

• differences in reports = differences in what is REMEMBERED rather than what is PERCEIVED
• whole report –> subjects quickly forgot the other items
• difference in recall could be attributed to output interference (# of items that have to be reported)