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Retrieval is the process of getting information out of memory storage and back into conscious awareness. This ability is essential for daily tasks like brushing hair and teeth, driving to work, and performing job duties. Retrieval occurs in three ways: recall, recognition, and relearning.
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A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
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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...
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Schemas are cognitive structures that provide a framework for interpreting and organizing social information. They help individuals navigate complex environments by offering expectations about people, events, and behaviors. Schemas influence attention, encoding, and retrieval processes, thereby shaping the entire trajectory of information processing in social contexts.Attention and Cognitive LoadDuring initial attention, schemas function as filters that prioritize schema-consistent information,...
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Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of...
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Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease
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Episodic retrieval and the SNARC effect.

Peter Dixon1

  • 1University of Alberta, Edmonton, Alberta, Canada. peter.dixon@ualberta.ca.

Psychonomic Bulletin & Review
|March 1, 2017
PubMed
Summary
This summary is machine-generated.

The SNARC effect, where small numbers trigger left responses and large numbers trigger right responses, was investigated. Working memory influences this spatial numerical association, showing effects depend on recent trial history.

Keywords:
Episodic memoryStimulus–response compatibilityWorking memory

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Area of Science:

  • Cognitive Psychology
  • Neuroscience

Background:

  • The Spatial Numerical Association of Response Codes (SNARC) effect describes faster left-hand responses to small digits and faster right-hand responses to large digits.
  • Existing theories often attribute the SNARC effect to automatic spatial-numerical mappings.

Purpose of the Study:

  • To test an episodic-retrieval account of the SNARC effect.
  • To investigate the role of working memory and recent trial history in modulating the SNARC effect.

Main Methods:

  • Experimental design involving blocks of trials with high repetition of specific "focus" digits (75% of trials).
  • Manipulation of stimulus-response mapping consistency within these blocks.
  • Measurement of response times to assess the SNARC effect under varying working memory loads.

Main Results:

  • No overall SNARC effect was observed when specific digits dominated working memory.
  • Response times were faster when the stimulus-response mapping aligned with the majority of trials in a block.
  • A reversed SNARC effect emerged when the dominant digits' mapping contradicted the typical SNARC association.

Conclusions:

  • The SNARC effect is not solely based on automatic spatial-numerical mappings.
  • Working memory content, influenced by recent episodic retrieval, significantly modulates the SNARC effect.
  • Response biases can override or even reverse the SNARC effect based on recent experience.