Schema Theory (Loftus & Palmer and Anderson & Pichert) Flashcards
Intro (Theory of reconstructive memory (Bartlett) suggests that…)
Theory of reconstructive memory (Bartlett) suggests that memory is an active process that is a reconstruction of different information, rather than passive retrieval.
- Argues that established knowledge (schemas) influence our cognitive processes in all stages
- Humans try to find meaning in experiences. Memory distortion (incorrect memory retrieval, false reconstruction of memories) is impacted by cultural schemas eg. Unfamiliar memories (Confabulation)
What are social schemas?
Determines the behavior based on their perceptions, or previous schema, of the situation they’re in
Aim of Loftus & Palmer
Study reconstructive memory.
To test hypothesis that wording of a question and post-event information (info a person is exposed to after an event) can alter memory.
Sample of Loftus & Palmer
45 students (Opportunity Sample) watched 7 film clips of traffic accidents
Procedure of Loftus & Palmer
- After, participants had to describe what had happened from the POV of an eyewitness
- Asked to estimate the speed of a car through a range of leading questions (wording manipulated to get the desired answer)
- Different verb “How fast were the cars going when they smashed/collided/hit/contacted each other?
- Assumption that these words would activate different cognitive schemas about the accident
2nd experiment of Loftus & Palmer
- 150 students were shown another film of accidents
- Asked if they could recall broken glass
- “How fast were the cars going when they smashed/hit into each other?)
Findings of both Loftus & Palmer experiments
Experiment 1: Highest mean estimate of speed “smashed” (40.8mph) lowest “contacted”
Experiment 2: Those who were asked “smashed” believed that they saw broken glass
How does Loftus link to schema theory?
Results show that the way the question was formed (the more “powerful” or “violent” the verb) activates different parts of the participants schema and distorts the person’s memory and into believing that the accident was more severe - memory distortion is based on reconstruction, different from what actually happened but lines up with the cognitive schema of the accident (Bartlett)
Strengths of Loftus & Palmer
Lab experiment (all variables are highly controlled) → would allow for causation, that the IV (verbs) did really affect the DV (speed)
Limitations of Loftus & Palmer
Participants were aware that they were in an experiment → demand characteristics (adjusting their answer to what the researcher wants)
Ecological validity → because it is a lab exp., the experiment is not generalizable to a real life situation and the clips were recreations and not real life accidents
Aim of Anderson & Pichert
Using a passage of text to investigate whether schema processing (previous info) influences encoding (sensory info → meaningful memory) and retrieval (recall)
Procedure of Anderson & Pichert
- Divided into two groups
- Given a passage to read (a description of a house)
- While reading, half of the subjects were asked to pretend they were prospective house-buyers (BUYING perspective) and the other half to read as if they were burgling it
- Write down as much as the story as possible
Findings of Anderson & Pichert
As burglars, people tended to remember the details of the house better… this may be because a “homebuyer” schema is unfamiliar. These different perspectives of schema influenced retrieval of memory (specific items that aligned with the schema)
How does Anderson & Pichert link to schema theory?
Schema affects encoding of memory as well as the recall.
Strength of Anderson & Pichert
Highly controlled lab experiment, Cause and effect relationship