Related Experiment Video
Updated: May 9, 2026
07:59
Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory
Published on: June 14, 2019
Examining the causes of memory strength variability: recollection, attention failure, or encoding variability?
Joshua D Koen1, Mariam Aly, Wei-Chun Wang
1Department of Psychology, University of California.
Summary
Recognition memory shows greater variability for studied items than new ones. This study supports the recollection account, suggesting retrieval processes, not just encoding, influence memory variability.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Memory Research
Background:
- Recognition memory exhibits higher variability in memory strength for studied items compared to new items.
- Understanding the source of this memory variability is crucial for distinct theoretical accounts of recognition memory.
Purpose of the Study:
- To differentiate between three prominent theories of recognition memory variability: encoding variability, attention failure, and recollection.
- To test predictions derived from each theory regarding the impact of retrieval manipulations on memory variability.
Main Methods:
- Four experiments manipulated retrieval conditions: response speeding, divided attention at retrieval, context reinstatement, and increased test delay.
- Recognition performance was analyzed to assess effects on memory variability.
Main Results:
- All four experiments' results consistently supported the recollection account.
- The findings contradicted the encoding variability account.
- Evidence for the attention failure account was mixed, with two experiments supporting it and two disconfirming it.
Conclusions:
- Encoding variability and attention failure are insufficient explanations for memory variance in recognition.
- The results provide strong support for the recollection account as the primary driver of memory variability in recognition memory.
- Retrieval processes significantly influence the variability observed in memory strength.
Related Concept Videos
01:16Interference and Decay
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
01:21Forgetting
Forgetting is an intrinsic aspect of human memory, characterized by the gradual loss or inaccessibility of information over time. Hermann Ebbinghaus, a pioneering psychologist, extensively studied this phenomenon and formulated the forgetting curve. This curve illustrates that memory loss occurs rapidly immediately after learning and then decelerates over time. Several mechanisms contribute to forgetting, including encoding failure, storage decay, retrieval failure, and interference.
Encoding...
Encoding...
01:29Theory of Attribution II: Kelley's Covariation Theory
Attribution theory plays a crucial role in social psychology, helping to explain how individuals interpret the causes of behavior. One prominent model within this field is Harold Kelley's covariation theory, which provides a systematic approach to determining whether internal traits or external circumstances drive a person's actions. The model posits that individuals rely on three key types of information—consensus, consistency, and distinctiveness—to make these judgments.Consensus: Comparing...
01:19Understanding Memory
Memory is the retention of information or experiences over time, facilitated through three main processes: encoding, storage, and retrieval. Encoding is the process of inputting information into the memory system. For instance, when listening to a lecture, watching a play, reading a book, or having a conversation, the brain is actively encoding information. This initial stage involves transforming sensory input into a form that can be processed and stored by the brain. Various factors, such as...
01:22Eyewitness Memory
Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function like a...
One such error is memory distortion, which occurs because human memory does not function like a...
01:23Role of Neurotransmitters in Memory
Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is critical for...
Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is critical for...