Lecture 4 - memory and depression, a new perspective Flashcards
what is an autobiographical memory
memory for a personally experience event or events
emotional disturbancec relationship to autobio memories
associated with qualitative changes in the way autobio memories are encoded and retrived
key focus: how is a memory described in terms of level of detail (eg specificity of recall?)
3 types of autobio memory
specific
categoric
extended
explain specific autobio memory
memory for an event that occured at a particular time and place (eg visiting a friend last friday)
explain categoric autobio memory
memory for a collection of events (eg playing tennis every saturday)
explain extended autobio memory
memory for an event that lasts more than one day (eg visiting america last summer)
how was specificity of memory retrieval first investigated
Williams and broadbent 1986
motivated by a desire to examine auobio memory retrieval in individuals attemoting suicide
explain suicidal behaviour and memory
it is assumed that immediately prior to the suicide attempt the individual is no amenable to peruasion or able to use effective coping strategies
role of memory - unable to remeber anything but a string of failure, disapointments, arguments etc
memory bias - may still be present in many patients immediately following the attempt and therefore could be a vulnerability factor for further attempts
does the specificity effect apply to depression and is it robust
high co-morbidity vetween suicide ideation and depression but they have distinct features too
many studies used the same method with depressed populations and found very consistent effect of OGM retrieval bias (williams et al 2007 review)
valence effects associated with specificity bias are less consistent
cue self-relevance impact on OGM
overgeneral recall in depression increases as the cue becomes more self-relevant (crane et al 2007)
temporal aspect of cue impact on OGM
age of memory matters with more remote memories mediating the impact of overgeneral recall in dysphoria (Falco et al 2014)
overgeneral (cateogoric) memory predicts what in depressed patients
- poor prognosis
- poor interpersonal problem solving
- hopelessness
which type of overgeneral memory is found in greater proportion of depressed patients as a % of autobio recall
categoric
OGM and all emotional disorders
it is disorder specific to depression and PTSD (co-morbid with depression)
it is not ofund in anxiety disorder, OCD or social phobia
there fore potential to distinguish between these disorders according to overgeneral memory’s underlying cognitive processes
how to decreased and increase overgeneral memory
reduced by distraction induction (watkins et al 2000)
is suggested to be increased by rumination (williams, 1996)