Forgetting - Mr.Wolman

download report

Transcript Forgetting - Mr.Wolman

MEMORY
Forgetting
Is forgetting a good thing?


Yes AND NO
Yes: gets rid of useless junk that would
clutter up our thoughts


“S” the Russian genius went crazy because he
remembered everything!!
No: its frustrating!
3 sins of forgetting



Absent-mindedness- inattention to details
Transience- storage decay over time
Blocking- inaccessibility of stored info
3 sins of distortion



Misattribution- source confusion
Suggestibility- misinformation effect
Bias- belief-colored recollections
Why do we forget?

Encoding failure

Storage decay

Retrieval failure

Interference

Amnesia
1. Encoding Failure

never entered long-term memory

Older people encode slower
External----sensory----(attn)---short-term---(encoding)---Long-term
Events
memory
mem.
Mem.
OR --- (encoding failure)---FORGET!

What letters are on the #5 on a phone?
2. Storage Decay



Memories leave us even if encoded
properly
*forgetting curve*
Example: learning Spanish






After 1 year--- retain 80%
“ 3 years---50%
“ 5 years ---40%
“25 years---38%
“50 years ---32%
*** forgetting levels off over time
3. Retrieval Failure


“It’s on the tip of my tongue!”
You know it’s there, but you don’t have
the right resources or information to get
it.
External---sensory---(attn)---STM---(encoding)---LTM
Events
memory
---(retrieval)---
OR
(failure)---FORGET
4. Interference

1. something you learn now makes it
harder to recall something you learned
earlier.


Ex: teacher has new students- makes it
harder to remember old student’s names
2. something you learn before makes it
harder to recall something now.

Ex: if you move and get a new phone
number, your old number might get in the
way
5. Amnesia

The blocking of older memories and/or the
loss of new ones


“blocking” because memories sometime
return… “blocking” can be selective
3 explanations:



Blood and chemical loss to brain, changes
brain’s ability to produce a memory
Trauma to head will disrupt neurotransmission so memories can’t be stored,
and erase memories that haven’t been moved
into LTM.
Electric shock therapy- treats depression
Repression



Freudian theory
Basic defense mechanism that banishes
anxiety causing memories to the
unconscious
Aka…Motivated forgetting
Misinformation and Imagination
effects

Read Elizabeth Loftus and answer the
questions