the cognitive area Flashcards
according to the cognitive area, what is behaviour due to?
inner mental processes which are abstract
what behaviours interest cognitive psychologists?
memory, perception, attention, problem solving and language
what does cognitive psychology compare the mind to?
a computer:
INPUT through our senses
PROCESSING using our knowledge and previous experience
RESPONSE (action or chosen inaction
define memory
the ability to retain info and demonstrate retention through behaviour. It saves us time when processing information and helps us make sense of the situations we are in
what can memory be influenced by?
information received at the time of event, after the event, and our schemas + expectations
what are schemas?
simplified, generalised packets of information about an object or event based on previous information and experiences
what are the patterns of distortion and reconstructive memory?
ASSIMILATION - in Bartlett’s study, the story was changed to fit with participants expectations (seal hunting became fishing)
LEVELLING - story became shorter with each retelling as participants omitted info that they did not see as important
SHARPENING - pts changed the order of the story to make sense of it and added extra detail + emotions
what is reconstructive memory?
the process where our memories change based on the info in our schemas
strengths of the cognitive area?
- improves our understanding of human behaviour. this approach explains the extent to which our behaviour is affected by the way the brain processes sensory information
- real world applications (Loftus and Palmer w police training, Grant with revision)
- scientific methodology (tends to use lab experiments, high level of control means can establish cause and effect, increases validity
weaknesses of cognitive area?
- low ecological validity
- reductionist as it ignores influence of emotion and biology (LoftusPalmer, may have been other effects eg adrenaline)
- validity (interested in inner mental processes which lead to behaviour, so relies on inferences which are hard to prove with evidence)
what is eyewitness testimony?
the use of eyewitnesses to give evidence in court
issues with eyewitness testimony?
- DEVLIN COMMITTEE said 74% defendants found guilty despite there being no other evidence other than eyewitness testimony against them
- THE INNOCENCE PROJECT used dna evidence to exonerate 208 people wrongfully convicted due to eyewitness testimony being major evidence in most cases
what are leading questions?
questions which, by their form or content, suggest the answer that is desired
aims of Loftus and Palmer?
- to investigate the effects of leading questions on the accuracy of eyewitness testimony
- to investigate if using different verbs to describe a collision would affect estimates of the speed the cars were travelling when the crash took place
sample characteristics of Loftus n Palmer 1?
- 45 students from University of Washington (volunteers)
- pts split evenly across conditions, taking part in only one (independent measures)
procedure of Loftus and Palmer 1?
- pts watched 7 clips of traffic accidents, which were segments from films by the Evergreen Safety Council and Seattle Police. Segments were between 5-30 secs, and 4/7 were staged crashes
- after watching clip, pts given a questionnaire which first asked the to ‘give an account of the accident you have just seen
- pts then asked specific qs, including critical q: ‘how fast were the cars going when they _____ eachother?’
- verbs used changed depending on condition. 5 verbs: smashed collided bumped hit and contacted
- pts gave speed estimate in mph
results of LoftusPalmer 1?
mean estimate speeds:
smashed 40.8
collided 39.3
bumped 38.1
hit 34
contacted 31.8
differences in speed estimates statistically significant