Class Notes (835,108)
Canada (508,934)
Psychology (2,710)
PSYC 2700 (126)
Lecture 6

Lecture 6 chapter 5 part 2.docx
Premium

9 Pages
103 Views
Unlock Document

Department
Psychology
Course
PSYC 2700
Professor
Chris Herdman
Semester
Fall

Description
Lecture 6 Chapter 5: STS continued Amnesics - Amnesics can “learn” • Only certain types of things though • Shook hands with a little prick (tiny needle), next day, went to shake hands, and person would take hand back before handshake - Serial position curve revisited - Bjork and Whitten (1974) • Task:  10 pairs of words  20 seconds delay at end of list with distracter task  Cued recall  Present 1 word and generate the other one (from a pair) • Results:  Strong recency effects even with distracter! • Suggests:  Recency effects may reflect more than just retrieval from STS?  Maybe it has made it into LTS, but not very strongly STS codes - Kroll et al (1970) • Evidence for visual coding in STS • Task:  Shadowing (repeat word for word) + test letter (ex: H) (either aud/vis)  Retention interval 1 to 15 seconds  Recall test letter • Results:  Short interval recall 96%, aud = vis  Long interval: recall vis > aud  Independent variable visual or auditory  Independent variable short or long interval - Shulman (1971) • Evidence for semantic code in STS • Task:  List of 10 words (500ms each)  Probe: does it match item for list?  Probe type: related vs unrelated (e.x: boat/ship) • Results: false positive when related  Ex: item on list is boat, and probe is ship, they would say “yes, ship was on the list” • Suggests: items can be coded semantically in STS (not justAVL) Summary - Original STS/LTS distinction based on: - Amnesic data transfer from STS to LTS requires rehearsal cycles - Serial position curve Recency can occur in different memory tasks - Code Not justAVL, can use other codes in STS - Duration not questioning this (lasts about 15-20 seconds) Working memory - Baddeley (1985) • STM:  Initially viewed as a storage system  However, believed to be important for active processing of information  Needed new concept • WM (working memory):  Active system for the temporary storage and manipulation of information - Components of WM • If the CE is not good for whatever reason, you will have a hard time setting priorities and time-sharing • Part of the memory that is involved when you are planning things (CE) • As you age, the CE can become compromised - Eg: 55 X 5 • Central Executive:  Retrieves rules of computation  Initiates retrieval of facts (5 X 5 = 25)  Activates phonological loop to temporarily store product (“25”)  Etc - General assumptions of WM: • WM operates on many tasks (math, reading, driving) • WM limited in storage capacity • Limited in how much you can process Demands of task #1 can limit the performance on task #2 - Assumptions regarding the two subsystems (called slave systems) • Involve simple low-level processing  Rehearsal and maintenance of information • Subsystems are domain specific  Phonological is separate from the visuo-spatial • Each subsystem has own limited (small) pool of attentional resources  May also drain (rely on) resources from the C.E. Evidence for independence of phonological loop vs. visuo-spatial sketch pad - Logie, Zucco and Baddeley (1990) - Primary tasks • Visual memory span  Grid of squares on display  ½ (random) filled in  3 seconds presentation, blank display, new displa
More Less

Related notes for PSYC 2700

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit