PSC 1 Lecture 9: Lecture 9: Memory

9 views5 pages
8 Jun 2018
School
Department
Course
Professor
Lecture 9: Memory
Memory
Faye Treatser
o Oct 1985: Faye Treatser is raped
o Nov 8: Walter Snyder is questioned by police, fingerprinted and released
o Same day: Faye Treatser views a picture of Walter. She indicates he is not her
attacker.
o Nov 11: Faye sees Walter outside her apartment and identifies him as the attacker
o Jan 1986: Detective Shiftic summons Faye to the police station. Snyder is in the
waiting room. Faye ID's him again.
o "I am 100% sure"- Faye Treatser
o Court case took place
o DNA provides evidence it was not Snyder.
Thus, human memory is fallible. We make mistakes.
Atkinson & Shiffrin 3 stage memory model
Sensory memory
o Visual sensory memory is called iconic memory.
o Echoic memory is auditory sensory memory.
o Duration: About 1/2 second
o Capacity: ?
o No-tone and tone conditions
o No tone condition:
accuracy- 50%
o Tone condition:
Flash letters
Play high, medium, low tone
Subject reports: 100% accurate.
Short tem memory
o Duration: 30 seconds, without rehearsal.
Unlock document

This preview shows pages 1-2 of the document.
Unlock all 5 pages and 3 million more documents.

Already have an account? Log in
o Capacity: 7 plus or minus 2 "chunks"
Primacy and Recency effects
o Give a string of digits
o Without rehearsal, digits from the beginning and end get remembered well, but not
the digits in the middle.
o Primacy: first items in the list are well remembered.
o Recency: if we test it as soon as we see it, items at the get remembered better than
those at the middle
o Primacy related to LTM and Recency related to STM.
Long Term Memory
o Storage in LTM depends on rehearsal
o If you rehearse long enough, information gets stored and is refreshed by retrieval.
Working memory: Alan Baddeley
Modern replacement of 3-stage Memory
Replace STM with working memory
More active system
Central executive: decision making system
o What information to retrieve from LTM and what information to keep
Phonological loop: keeps auditory information we might need in an active state.
Visual spatial sketch pad: keeping the visual information we night need active.
Central executive calls wither of the sub systems for information.
Long term memory
Duration: until you die
Capacity: unknown
Problems for 3-satge model: time in STM does not mean information is stored in LTM.
Craig & Watkins 1973 study helped show the flaws in 3-stage model
Unlock document

This preview shows pages 1-2 of the document.
Unlock all 5 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
Monthly
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.