Related Experiment Video
Updated: May 29, 2026
10:38
A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
Published on: July 16, 2015
Verbal serial list learning in mild cognitive impairment: a profile analysis of interference, forgetting, and errors
David J Libon1, Mark W Bondi, Catherine C Price
1Department of Neurology, Drexel University, College of Medicine, Philadelphia,PA 19013, USA. dlibon@drexelmed.edu
Journal of the International Neuropsychological Society : JINS
|September 2, 2011
Summary
Mild cognitive impairment (MCI) patients show distinct memory deficits. Differentiating amnesic, mixed, and dysexecutive MCI subtypes is crucial for accurate diagnosis and understanding memory impairments.
Area of Science:
- Neurology
- Neuropsychology
- Cognitive Science
Background:
- Previous research identified three verbal serial list-learning profiles in mild cognitive impairment (MCI) using cluster analysis.
- These profiles included amnesic MCI (aMCI), mixed MCI (mxMCI), and dysexecutive MCI (dMCI) based on delayed memory test performance.
Purpose of the Study:
- To further characterize memory impairments in distinct MCI subtypes.
- To examine forgetting/savings, interference, intrusion errors, and recognition foil responses across MCI groups and normal controls (NC).
Main Methods:
- Cluster analysis was used to define three MCI groups: aMCI, mxMCI, and dMCI.
- Participants were assessed on measures including forgetting/savings, interference effects, intrusion errors, and recognition foil discrimination.
Main Results:
- aMCI patients showed poor savings, high intrusion errors, and indiscriminate foil responses.
- mxMCI patients demonstrated better savings, fewer intrusions, and selective foil endorsement from interference lists.
- dMCI patients selectively endorsed interference foils, performing similarly to NC participants.
Conclusions:
- Distinct memory impairment patterns exist within MCI subtypes.
- Relying on a single memory test score may not be sufficient for operationalizing MCI diagnoses.
More Related Videos
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...
01:03Serial Position Effect
The serial position effect is a cognitive phenomenon where individuals are more likely to recall the first and last items in a list compared to those in the middle. This effect is divided into the primacy effect and the recency effect. The primacy effect is observed when the initial items in a list are remembered better. This occurs because these items are rehearsed more frequently or receive more elaborative processing, allowing them to be encoded into long-term memory more effectively. For...
01:10Tip-of-the-Tongue Phenomenon
The tip-of-the-tongue (TOT) phenomenon is a cognitive experience characterized by a temporary inability to retrieve specific information from memory despite having a strong feeling of knowing the information. Although individuals cannot access the target word or detail, they frequently recall related elements, such as its initial letter, syllable count, or context. This partial retrieval often causes frustration, as one might recognize a familiar face or know that a name starts with a specific...
01:22Dementia l: Introduction
Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
01:25Learning Disabilities
Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
Dyslexia is a...
Dyslexia
Dyslexia is a...