Review of Studies Flashcards
(133 cards)
What were the Aims of Baddeley’s study?
To Investigate the influence of acoustic + semantic word similarity, on learning and recall in the LTM
How many lab experiments did Baddeley conduct in his 1966 study?
Three different lab experiments were conducted
we focus on Experiment Three
How many participants were there in Baddeley’s study, and what levels of the IV were there?
72 participants - 15-20 ppts for each word list
The 4 Lists of 10 Words: List A: Acoustically Similar List B: Acoustically Dissimilar List C: Semantically Similar List D: Semantically Dissimilar (Lists B + D were baseline control groups for Lists A + C respectively)
What was the Procedure of Baddeley’s study?
The words were presented via projector
They were projected One Word Every Three Seconds
They did an interference test to block out their usage of the STM
They were asked to recall the words within a minute, in the correct order
They received a list of all the words, as this was a test of memory, and not learning the words.
They repeated this over 4 learning trials.
15 minute interference task
They copied down 6 lots of 8 digit sequences at their own pace
This was to block out Rehearsal
After this, they were given a surprise retest
What were the Findings of Baddeley’s study?
Recall of Acoustically Similar was Worse than Acoustically Dissimilar
These results, however, were not significant
At first, the acoustically dissimilar group did better than the similar group, but then the acoustically similar got better until they exceeded the control’s performance in the surprise retest.
This demonstrates that Acoustic Encoding is Initially Difficult (and affects STM recall), but didn’t affect LTM recall
Recall of Semantically Similar Words was Worse than Semantically Dissimilar
These results were significant
What did Baddeley conclude in his study?
The STM is Largely Acoustic
The LTM is Largely (but Not Exclusively) Semantic
What were the strengths of Baddeley’s 1966 study?
Internal Validity: Lab Experiment
Internal Validity: Control Group
Reliability: Standardised Procedure
Practical Application
What were the weaknesses of Baddeley et al’s 1966 study?
Ecological Validity: Lab Experiment
Ecological Validity/ Mundane Realism: Unnatural Behaviour
^^ Therefore, Generalisability is Questioned
Ethics: Participants weren’t informed about the surprise retest
What were the Ethics surrounding Baddeley’s (1966b) study?
Baddeley is a well-known psychologist who had previously conducted many studies into memory and cognition and therefore he was competent to conduct the study to investigate what type of encoding LTM has and so the study was ethical.
No informed consent was gained as the pps were told exactly what the study is going to be about so the encoding of the LTM.
But this was done to ensure no demand characteristics took place- so pps don’t on purpose try to focus on certain words.
What were the Practical Issues surrounding Baddeley’s study?
There was a high level of control in this study where each word was shown on a projector for only 3 seconds so it can be deduced there is a strong C and E between words and LTM encoding.
Since a lab experiment was used the whole atmosphere was artificial and the tasks given so looking at each word and trying to remember it lacks mundane realism and is not ecologically valid.
How did Badddeley’s study surround Reductionism?
This study simplified the complex nature of encoding into list of words that were either acoustically of semantically similar or dissimilar but in real life most sentences consider both types of encoding and so LTM in real may use different kind of encoding not just semantic and so the study is reductionist. It was important to simplify the type of encoding to study the LTM and so word lists were the only way to investigate this. and scientific as the effect of one variable on another can be examined
How did Baddeley’s study regard Comparisons of Explanations?
The study revealed that MSM was an accurate theory as LTM was found to have a different type of encoding to STM (semantic as opposed to phonetic).
However it does not account for other theoretical explanations of memory, such as reconstructive memory that argues memory is an imaginative reconstruction of events.
How did Baddeley’s study regard Psychology as a Science?
This was lab experiment which had a high level of control so each word only shown for 3 seconds and it has a standardised procedure so is replicable and internally valid.
This study is considered to be reductionist because memory is simplified into list of words. Also, as a result of being scientific, the study lacks ecological validity and mundane realism due to the unrealistic lab environment and task.
How did Baddeley’s study regard Culture + Gender?
Baddeley study used Western students who most probably were similar in social class therefore the study is ethnocentric
How did Baddeley’s study regard Nature v Nurture?
Baddley’s findings suggest LTM and STM encode differently for everyone, therefore it could be deduced that genes affect encoding of memories, since it appears to be innate rather than learned.
However, Baddeley found that when rehearsal in the STM was not blocked in the first experiment, this acted as a confounding variable and improve memory. Since the amount of rehearsal someone carries out can be determined by nurture, this implies the encoding of long term memories can be affected by nurture aswell.
How did Baddeley’s study regard Psychology Over Time?
Baddley’s investigation was very important in its time, as it provided convincing empirical evidence for the separation of LTM and STM and MSM was the most up to date theory of memory at the time.
Since Baddeley’s investigation, LTM has been further separated into episodic and semantic memory, and STM into the phonological loop and visuospatial sketchpad, showing how our understanding of memory has developed over time.
How did Baddeley’s study regard Psychology in Society?
This study allowed us to identify that LTM has semantic encoding so now during a diagnosis after an accident on the brain, doctors can easily identify if memory has been lost and what kind of memory is affected depending on the type of encoding the patient is unable to do.
What was the aim of Sherif’s (1956/61) study?
To investigate relations between groups:
To see whether strangers who have common goals will form a close group.
To see whether 2 groups that compete with each other will become hostile towards each other.
What was the Procedure of Stage 1 in Sherif’s (1954/61) study?
For 1 week, the two groups were kept apart and allowed to form group norms + identities
Boys developed an attachment to the group throughout the first week of the camp, by doing various activities together (hiking, swimming, etc)
The boys chose names for their groups- The Eagles + The Rattlers- and stencilled them onto shirts + flags
What was the Procedure of Stage 2 in Sherif’s (1954/61) study?
The boys were told about another. They went through a tournament of a series of competitions; where the winner get trophies, medals, and camping knives
The researchers recorded phrases used by the boys, and analysed if they’re derogatory
A bean counting competition was included-boys had to then estimate how many each found; which was to see if they’d overestimate the in group/ underestimate the out group
What was the Procedure of Stage 3 in Sherif’s (1954/61) study?
To achieve harmony within the group, the boys started doing tasks that brought them all together
Examples: Fixing a water tank, pulling a broken truck out of mud
Data was collected through the observation of the boys’ friendship, an analysis of friendship, through the experiments and tape recordings.
What were the Results of Stage 1 in Sherif’s (1954/61) study?
The boys bonded with their groups and both groups had a recognised leader.
They discussed the existence of the other group in negative terms e.g. ‘they had better not be in our swimming hole’.
What were the Results of Stage 2 in Sherif’s (1954/61) study?
Towards the end of stage one, the groups began to become competitive and prejudice became apparent between the two groups
At first this was only verbally expressed but as the competition wore on this expression took a more direct route
The Eagles refused to sit with the Rattlers, the Eagles burned and Rattlers flag. The next day the Rattlers ransacked the Eagles cabin overturned beds and stole private property
What were the Results of Stage 3 in Sherif’s (1954/61) study?
The hostility between the groups initially remained, but the problem solving problems began to reduce the hostility towards each other.
When they fixed the water tank they celebrated together, and there was cooperation by all the boys contributing the same amount to hire a film
For tasks helped to reduce friction and by the end of the stage, although friendship choices still favoured the in-groups, there was increased friendships between the groups
The Rattlers even spent a $5 prize from one of the competitions on drinks for all of the boys