Reconstructive Memory (Edexcel A-Level Psychology): Revision Notes
Reconstructive Memory
Introduction to Bartlett's theory
Sir Frederic C. Bartlett (1886-1969) developed one of the most influential theories in cognitive psychology during the 20th century. His seminal work, published in Remembering (1932), challenged the prevailing experimental approaches to memory research at the time.
Bartlett argued that memory research should reflect real-world contexts rather than artificial laboratory conditions. He believed memory should not be studied as separate components operating independently, but as an integrated system working alongside other cognitive functions. His approach emphasised understanding how memory interacts with perception, thinking and other mental processes.
Bartlett's work represented a significant shift from the behaviourist approaches dominant in the early 20th century. Rather than focusing on rote memorization of meaningless stimuli, he investigated how people remember meaningful material in naturalistic ways.
Perception and memory
The role of perception
Bartlett proposed that to understand memory fully, we must first examine what happens before information is stored. Perception - how we initially interpret and understand sensory information - serves as the foundation for what is later remembered.
Through experiments involving shapes and objects, Bartlett discovered that participants typically assigned verbal labels or names to what they perceived. These labels subsequently influenced how participants represented the objects when asked to recall them later. He concluded that perception determines how information is encoded and remembered.
The connection between perception and memory is crucial: how we initially interpret information fundamentally shapes what we remember. This means memory errors can begin at the very first moment we encounter information, not just during storage or retrieval.
Individual differences in perception
How we perceive objects and events depends on individual interpretation. This interpretation is shaped by:
- Past experiences and prior knowledge
- Learned information and skills
- Personal attitudes and beliefs
- Individual characteristics and personality traits
Because perception varies between individuals, each person forms unique mental representations of the same event or object. This means memory is inherently subjective and influenced by personal factors from the moment information is first encountered.
Imaging and the construction of memories
Mental imagery in recall
Bartlett conducted investigations into the relationship between mental imagery and memory. He used ink blots as stimuli, asking participants to describe what images came to mind when viewing the patterns.
Participants engaged in what Bartlett termed mental rummaging - searching through their stored mental images to identify one that matched the ink blot pattern. The descriptions participants provided were largely influenced by their personal interests, past experiences, and even their mood at the time of viewing.
The ink blot experiments demonstrated that even when viewing the same ambiguous stimulus, different people 'saw' different things based on their individual experiences and mental representations. This provided early evidence for the subjective nature of perception and memory.
Effort after meaning
Bartlett introduced the concept of effort after meaning to describe the considerable mental work participants undertook when trying to connect unfamiliar stimuli with their existing knowledge. When presented with something new or ambiguous, individuals actively search for meaning by relating it to information they already possess.
Once a stimulus gains meaning through this process, it becomes easier to assimilate into existing knowledge structures and store in memory. This demonstrates that memory is not a passive recording system but an active process of making sense of information.
The War of the Ghosts study
Rationale and design
Bartlett's most famous investigation used a Native American folk tale called 'The war of the ghosts'. He selected this story for several methodological reasons:
Why This Story Was Chosen:
- It was culturally unfamiliar to British participants, allowing examination of how people handle foreign material
- The story lacked conventional narrative structure, making it difficult to follow using Western storytelling expectations
- Its dramatic and visual content encouraged participants to form mental images
- The supernatural ending provided an opportunity to observe how participants would interpret and remember unusual elements
The story
The tale describes two young men from Egulac who go hunting for seals. They encounter warriors in canoes who invite them to join a war party. One man refuses, fearing he might be killed, whilst the other accompanies them. During the battle, the young man realises he has been fighting alongside ghosts. Upon returning home and recounting his experience, he falls ill - something black emerges from his mouth, his face contorts, and he dies.
Procedure
Bartlett employed the repeated reproduction method, where each participant read the story twice and then recalled it at various time intervals. These intervals ranged from several minutes to days, weeks, months and even years. This approach allowed Bartlett to examine how memories change over time and with repeated retrieval.
Twenty participants took part in the study, and Bartlett analysed the qualitative nature of their recall, focusing on the types of changes and distortions that occurred.
Findings
Bartlett identified several consistent patterns in how participants recalled the story:
Shortening: The story became progressively shorter with each reproduction, as participants omitted details they considered unimportant or failed to remember.
Transformation: Objects and concepts within the story were changed to more familiar equivalents. For example, 'canoe' was frequently changed to 'boat', and 'hunting seals' became 'fishing'.
Familiarisation: Participants made the story more coherent and logical according to their own cultural expectations and narrative conventions. The story structure became more organised and easier to follow.
Rationalisation: Many participants either omitted the supernatural elements entirely or explained them in rational terms, as the concept of ghosts did not fit their worldview or expectations.
Modern concepts: The language used in recall reflected contemporary expressions and concepts rather than the original wording.
Even recall after just a few minutes contained errors, which became consolidated and exaggerated in subsequent reproductions. This shows that memory distortion is not just a long-term phenomenon - it can occur almost immediately.
Conclusions
Bartlett's findings led him to conclude that memory is reconstructed each time it is retrieved. The process is:
- Prone to distortion
- Influenced by rationalisation (making information more logical)
- Subject to transformation (changing details to fit expectations)
- Affected by simplification (reducing complexity)
- Constructive in nature
- Influenced by individual inferences and prior knowledge
Schema theory
The theory of reconstructive memory
Based on his experimental work, Bartlett developed the theory of reconstructive memory. This proposes that memory is not a passive storage system that faithfully records experiences. Instead, memory is constructive - we actively interpret information when encoding it and actively reconstruct it when retrieving it.
Previous knowledge influences how we interpret new information and make inferences about events. When recalling something, we draw upon past experiences to reinterpret stored information and fill in gaps in our memory. This process resembles using notes to remember an event - we interpret the notes and construct a coherent narrative, rather than replaying a perfect recording.
Key Distinction:
Memory is not like a video recording that can be played back accurately. Instead, it's more like having rough notes about an event - we use those notes along with our general knowledge to reconstruct what we think happened. This is why memory can feel accurate even when it contains errors.
Understanding schemas
Bartlett drew upon schema theory to explain the reconstructive nature of memory. Schemas are mental frameworks or organised packages of knowledge representing information about specific objects, events, situations or concepts.
Each schema contains two types of information:
Fixed information: Unchanging elements that define the core features of a concept. For example, a restaurant schema includes the fixed elements of a building where food is served and payment is required.
Variable information: Flexible elements that can change depending on the specific instance. In the restaurant schema, variable elements include the type of cuisine, menu options, pricing, service style and décor.
Understanding Fixed vs Variable Information:
Think of a schema as a template with some blank spaces. The fixed information is like the printed text that never changes, whilst the variable information is like the blank spaces you can fill in differently each time. This flexibility allows schemas to apply to many different specific instances whilst maintaining their core structure.
How schemas influence memory
We do not remember every detail of our experiences. Instead, schemas provide a framework that allows us to reconstruct memories by filling in gaps with information from our general knowledge. During recall, we actively draw upon relevant schemas to make inferences and create a coherent memory.
This process explains the mental rummaging observed in Bartlett's imaging experiments - participants were searching for appropriate schemas that could provide meaning to ambiguous stimuli. The concept of effort after meaning describes the work involved in identifying the correct schema to interpret new information.
Schemas in recognition and interpretation
Schemas also guide how we recognise and interpret unfamiliar objects and events. When encountering something new, we attempt to match it to existing schemas to make sense of it.
Demonstration: The Broken Glass Passage
Consider the passage: "When the man entered the kitchen, he slipped on a wet spot on the floor and dropped the delicate glass vase he was holding. The glass vase was very expensive and everyone watched the event with horror" (Bransford, 1979).
When asked to write down this passage from memory, many people recall that the glass broke, even though this detail is never explicitly stated.
Why does this happen?
The passage triggers a schema for broken glass based on details like horror, wet spot, slipping and dropping. People use this schema to infer that the glass broke and then incorporate this inference into their memory as if it were actually stated in the original passage.
The nature-nurture debate
Schemas represent mental constructs formed through experience and learning, suggesting they are products of nurture. However, the mechanisms that enable humans to develop and use schemas may have biological or innate bases.
The way schemas represent knowledge varies between individuals and cultures, as they reflect stereotypical beliefs and expectations specific to particular contexts. This means schemas are shaped by upbringing and cultural background, though the basic capacity to form schemas may be universal.
Evaluation of Bartlett's work
Methodological limitations
Lack of control and standardisation: Bartlett's experimental procedures lacked the rigorous controls typical of scientific research. Participants had considerable freedom in how they approached the tasks. In one instance, he unexpectedly asked a previous participant to recall 'The war of the ghosts' after six and a half years without warning. His findings were predominantly qualitative, describing the nature of recalled information rather than providing quantitative measurements. This openness to subjective interpretation means his experiments can be criticised for lacking scientific rigour.
Deliberate orchestration: Critics argue that Bartlett specifically chose 'The war of the ghosts' because its unfamiliarity and unusual structure would produce the memory errors he expected, making the findings less generalisable to everyday memory.
Common Criticism:
Bartlett's research is often criticised for lacking experimental control, which makes it difficult to replicate exactly and raises questions about the reliability of his findings. However, consider whether strict laboratory controls would have captured the naturalistic memory processes he aimed to study.
Strengths of Bartlett's research
Replication and consistency: Despite criticisms of the original study, Bartlett conducted repeated reproduction experiments using eight different stories across various participants. All studies found the same patterns of shortening, transformation, familiarisation and omission. He also found similar effects with repeated and serial reproduction of pictures, suggesting memory for different types of material is subject to the same reconstructive processes.
The consistency of findings across multiple studies and different types of material (stories and pictures) strengthens Bartlett's conclusions. If the effects were due to the specific characteristics of one story, we would not expect to see the same patterns across different materials.
Temporal validity: Bartlett's findings have practical applications in understanding eyewitness testimony. His assertion that memory is inaccurate and susceptible to distortion has stimulated extensive experimental research demonstrating the unreliability of eyewitness recall. Steyers and Hemmer (2012) argue that whilst experimental conditions can deliberately induce errors, schematic recall in real-world contexts without manipulated material can be highly accurate. This suggests we should exercise caution when evaluating eyewitness testimony but not dismiss it entirely.
Debates about schema influence
Timing of schema effects: Bartlett believed schemas influence memory at the retrieval stage - we actively reconstruct memories when recalling them, and this reconstruction is affected by our schemas. However, some researchers argue schemas may also influence memory at encoding, as we draw upon schemas to comprehend situations and make initial inferences about experiences.
The question of when schemas exert their influence - at encoding, storage, or retrieval - remains an active area of research. It's possible that schemas affect memory at multiple stages, not just one.
Overgeneralisation concerns: Bartlett's claim that memory is inherently inaccurate and flawed has been challenged. This perspective has led to substantial research suggesting eyewitness memory is completely unreliable. However, evidence indicates that in real contexts without experimental manipulation, schematic recall can be very accurate. Therefore, whilst caution is warranted, we should not assume eyewitness memory is entirely untrustworthy.
Individual differences in memory
Processing speed and capacity
Memory abilities and characteristics vary between individuals. Processing speed - the rate at which we can process information - differs significantly across the population. You may notice some classmates take longer to copy notes from the board, which is likely related to their processing speed and short-term memory capacity.
Both processing speed and capacity are affected by age. Research shows younger children have shorter digit spans (the number of digits they can hold in memory) than older children, indicating memory capacity increases with age. Evidence for this developmental pattern will be examined in the study by Sebastián and Hernández-Gil (2012).
Individual differences in memory are normal and expected. These differences reflect variations in cognitive processing abilities, not necessarily differences in intelligence or overall academic capability.
Schemas and autobiographical memory
Bartlett's reconstructive memory theory suggests we all possess relatively similar schemas, but these are heavily influenced by personal experience. This individual variation affects how we perceive events, which in turn shapes the memories we form.
Remember!
Key Points to Remember:
- Reconstructive memory proposes that we actively reconstruct our memories when retrieving them, rather than accessing accurate recordings of past events
- Schemas are mental frameworks containing fixed and variable information that guide our interpretation and recall of events
- Bartlett's War of the Ghosts study demonstrated that memory is subject to distortion, rationalisation, transformation and simplification over time
- The repeated reproduction method involves participants recalling information at increasing time intervals, revealing how memories change with repeated retrieval
- Effort after meaning describes the active process of connecting new information with existing knowledge to make it meaningful and memorable
- Memory is influenced by individual factors including prior knowledge, cultural background, personal experiences and expectations, making it inherently subjective