Download Forgetting Memory – PPT

Forgetting
Ebbinghaus’s Curve of Forgetting
most forgetting takes placed during the first 9
hours after learning. Especially after the 1st hr.
Forgetting
Ebbinghaus’s Curve of Forgetting
most forgetting takes placed during the first 9
hours after learning. Especially after the 1st hr.
Method of Savings –
difference between the # of repetitions needed to
learn a list of items & the # to relearn.
- It took Mel 8 repetitions to remember a
list of 20 words
- One day later it took Mel 4 repetitions to
remember the same list of words
- What is the savings??????
Forgetting
Ebbinghaus’s Curve of Forgetting most forgetting takes placed during the first 9
hours after learning. Especially after the 1st hr.
Method of Savings difference between the # of repetitions needed
to learn a list of items & the # to relearn.
Ebbinghaus’s Results
• Curve of Forgetting
• memory(savings) lasts in
long-term memory for a long
time - decades
Forgetting - Decay & Interference
Decay gradual erosion of a memory
- most common cause of short-term memory loss.
Forgetting - Decay & Interference
Interference
interrupts memory through the presence of other
info.
- STM, new info displaces old info because of
the limited space.
- LTM the more memories stored, the harder
to “find” one particular memory
- Retroactive interference when learning new info
interferes w/recall of older info
- Proactive interference when older info interferes
w/recall of new info
Forgetting
Suppression
conscious attempt to
forget information,
("I won't think about that
now - tomorrow is
another day")
Repression
unconscious attempt to
forget information
(past abuse, etc.).
Brain Damage
Retrograde Amnesia - the loss of
memory of events prior to an injury. Many
regain most memories back.
Brain Damage
Retrograde Amnesia - the loss of
memory of events prior to an injury. Many
regain most memories back.
Anterograde Amnesia loss of memory of events occurring after
the injury
- result of damage to hippocampus
- Prevents transfer of new experiences
from STM to LTM
Brain Damage
Retrograde Amnesia - the loss of
memory of events prior to an injury. Many
regain most memories back.
Anterograde Amnesia loss of memory of events occurring after
the
injury
- result of damage to hippocampus
- Prevents transfer of new experiences
from STM to LTM