cognitive area Flashcards

1
Q

background to Moray’s study

A

Cherry stated that no matter how deep in conversation you are at a cocktail party, if someone mentioned your name this would draw your attention (cocktail party effect)
Moray wanted to test this to see if your name would indeed break through the barriers put up in the process of focusing attention during a shadowing task

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2
Q

what is cocktail party effect

A

there is a barrier broken when your name is said in a crowded room

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3
Q

what is dichotic listening

A

when headphones are worn by a participant and a different message is played in each ear

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4
Q

what is shadowing

A

when a participant is told to focus on a passage of text whilst dichotically listening and repeat it out loud as they hear it

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5
Q

what is affective instructions

A

when a person is asked to do something preceded by their name being said

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6
Q

aim to Moray’s study

A

test Cherrys findings on the inattentional barrier more thoroughly as he found that people who shadowed one task could recall nothing from the rejected task

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7
Q

sample in Moray’s experiment 1

A

-undergraduate students
-both genders
-Oxford University

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8
Q

procedure in Moray’s experiment 1

A

1) participants shadowed a piece of prose they could hear in 1 ear through Brenell mark tape recorder (attended message) which they completed 4 times before as practise
(speech rate 150 words a minute and male speaker)
2) loudness matched in each ear by participants saying when message appeared to be of equivalent volume to them
3) in other ear a list of words was repeated 35 times (rejected message)
-at the end participants completed a recognition task where they had to indicate what they recognised from a list of 21 words
-7 words were in attended passage, 7 were in rejected and 7 were in neither passage

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9
Q

results

A

mean number of recognised shadowed passage-4.9

rejected passage- 1.9

neither passage - 2.6

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10
Q

aim of Moray’s experiment 2

A

wanted to find out if an affective cue (their name) given alongside instructions, could break inattentional barrier

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11
Q

sample of Moray’s experiment 2

A

-12 undergraduate students
-both genders
-Oxford University

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12
Q

what was the independent variable in Moray’s experiment 2

A

whether an instruction within a rejected message was preceded by the participants name or not

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13
Q

what was the dependent variable in Moray’s experiment 2

A

whether participants were more likely to hear an instruction in a message they’re not paying attention to if its preceded by their name

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14
Q

procedure in Moray’s experiment 2

A

1) participants listened to 2 different passages of light fiction at the same time, shadowing task each time

2) contained an instruction at the start and within them
both passages read in a steady monotone in a male voice at 130 words per minute

3) checked there was no increase in intensity when name spoken

4) participants decieved as they were told to make as little errors in shadowing

some instructions said name, you may stop now and some did not say name
some had no instructions

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15
Q

results for Moray’s experiment 2

A

affective instruction said 39, heard 20
non - affective said 36, heard 4
less than 1% probability due to chance

more likely to hear instruction within passage if given an instruction at the start (pre warning)

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16
Q

what was the aim of Moray’s experiment 3

A

would pre warning break the inattentional barrier

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17
Q

sample used in Moray’s experiment 3

A

two groups of 14
both genders
Oxford University

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18
Q

what was the independent variable in Moray’s experiment 3

A

manipulation of the instructions given to ‘set’ the 2 groups of participants

19
Q

what was the dependent variable in Moray’s experiment 3

A

how many digits our participants can recall from the rejected message

20
Q

procedure of Moray’s experiment 3

A

1) 1 group was told they would be asked questions about the shadowed message at the end of each message
2) the other group were specifically told to remember as many of the digits as possible

21
Q

results from Moray’s experiment 3

A

showed no difference in the mean scores of digits recalled correctly between the 2 set conditions - numbers cannot break through the block on the rejected message

22
Q

background to Loftus and Palmer’s study

A

Bartlett created widely accepted idea of how the information we take in is affected by already existing schemata representing previous knowledge, however this had critics e.g the data was qualitative

Loftus was interested in the fragility of memory- how easily we can forget information

should eye witness testimony be used in court?

23
Q

what is schema theory

A

the ability to retain information and to demonstrate this retention of information through behaviour

24
Q

what is reconstructive memory

A

the way in which our biases and prejudices can unconsciously lead us to have memories of events that are distortions of what actually happened

25
what are leading questions
a question which, by its form or content, suggests what answer is desired
26
aim of Loftus and Palmer's study and sample of experiment 1
to investigate the effect of language on memory 45 participants split into 5 groups of 9
27
what was the dependent variable in Loftus and Palmer's experiment 1
mean estimated speed of car in video per condition - quantitative
28
what were the 5 verbs used for IV in Loftus and Palmer's experiment 1
-smashed -bumped -collided -hit -contacted
29
procedure to Loftus and Palmer's experiment 1
1) students were shown all 7 clips from Evergreen Safety council of the Seattle Police Department. The staged clips lasted between 5 and 30 seconds. 4/7 clips were staged crashes where the speed at which they crashed was known (meaning the accuracy of speed estimates could be measured) 2) after each clip they were given a questionnaire to write an account of what they had seen and answer multiple questions - to avoid demand characteristics 'About how fast were the cars going when they ------- each other' to counteract order effects the groups were presented with a different order of films
30
results
20 mph - 37.7 40 mph - 36.1 smashed - estimate speed of 40.8 contacted - 31.8 results were proved to be significant by a stats test at the p< 0.005
31
sample of Loftus and Palmer's experiment 2
Washington, USA 150 split into 3 groups of 50 students
32
procedure of Loftus and Palmer's experiment 2
stage 1- participants watched a clip of a car crash answered questionnaire (exp 1) verbs= hit/smashed and control group that didn't partake in experiment 1 stage 2- a week later participants returned to answer more questions including 'did you see any broken glass'
33
results for Loftus and Palmer's experiment 2
smashed gave higher speed in mph than hit smashed - 16 remember seeing broken glass hit- 7 remember seeing broken glass control - 6
34
background to Grant Et Al's study
Godden and Baddeley studied the effect of context dependent memory (memory of information is better when tested in the same context) on deep sea divers, they had some divers learn list of words in water and some on land and then had them recall these in water or on land. In matching conditions divers recalled more
35
aim to Grant's study
context dependent memory effects on both recall and recognition tests, as it is said to work better on recall
36
sample and location of Grant's study
17 females 23 males 17-56 years data only analysed for 39 as one guy scored atypically low
37
what sampling method was used in Grant's study
snowball, eight student researchers recruited 5 acquaintances to take part
38
procedure to Grant's study
1) participants read a short article on psychoimmunology (interesting and understandable) 2) either read article in silence or with cafeteria noise played through a casette (both wore headphones) some words were audible 3) they took a 10 question paraphrased recall test and then multiple choice 16 mark recognition test either with noise or silence (followed order of the information in original article) 4) recall taken before recognition to ensure any information recalled was from the reading of article and not the multiple choice test 5) between test and study they had 2 minute break without headphones 6) were debriefed on true purpose of study
39
results to Grant's study
6.7/10 recall silent silent 4.6/10 recall silent study noisy test 14.3/16 recognition silent silent 12.7/16 recognition silent study noisy test no difference in reading time reported between noisy and silent conditions
40
background to Simon and Chabris' study
interested in inattentional blindness- when people fail to see something because they are paying attention to something else investigated by Neisser: in transparent recording, two teams of basketball players appeared, each team passing a ball from one player to the next participants told to focus on white / black team and to press a key when a pass is made 30 seconds into film a woman carrying umbrella walked across screen - most people didn't see woman
41
aim of Simon and Chabris' study
wanted to investigate whether the results from Neisser's research were affected by the way he had made his video (transparent effect) and whether the results would differ for an opaque video with a 5 second unexpected event easy/hard task unusual event/ more usual event
42
sample of Simon and Chabris' study
228 participants students at Harvard University results were only based on data from 192 participants as they had seen video before/ made inaccurate count of passes some were payed, some given candy bars
43
procedure of Simon and Chabris' study
1) each participant watched a short video: -same actors -same location -lasted 75 seconds -players passed ball in consistent order 2) then asked questions about what they had seen 'Did you notice anything unusual while counting' 'Have you seen video before' - data not used the video was either: -opaque or transparent -a woman with umbrella or woman in gorilla costume -counting basketball passes of black/white team -easy task count passes or hard task count aerial and bounce passes 3) debriefed after, watched video again
44
results from Simon and Chabris' study
easy task white team transparent umbrella- 58 noticed (may expect to see woman at basketball but not gorilla) easy task white team transparent gorilla - 8 noticed gorilla noticed more in black condition - similar colours 46% inattentional blindness