Short-Term Memory Flashcards
Modal model of memory
The model proposed by Atkinson and Shiffrin that describes memory as a mechanism that involves processing information through a series of stages, including short-term memory and long-term memory. It is called the modal model because it contained features of many models that were being proposed in the 1960s.
Memory
The processes involved in retaining, retrieving, and using information about stimuli, images, events, ideas, and skills after the original information is no longer present.
Control processes
In Atkinson and Shiffrin’s modal model of memory, active processes that can be controlled by the person and that may differ from one task to another. Rehearsal is an example of a control process.
Structural features
Types of memory indicated by boxes in models of memory. In the modal model, the types are sensory memory, short-term memory, and long-term memory.
Rehersal
The process of repeating a stimulus over and over, usually for the purpose of remembering it, that keeps the stimulus active in short-term memory.
Persistence of vision
The continued perception of light for a fraction of a second after the original light stimulus has been extinguished. Perceiving a trail of light from a moving sparkler is caused by the persistence of vision. See also Iconic memory.
Sensory memory
A brief stage of memory that holds information for seconds or fractions of a second. It is the first stage in the modal model of memory. See also Iconic memory; Persistence of vision.
Whole report method
Procedure used in Sperling’s experiment on the properties of the visual icon, in which participants were instructed to report all of the stimuli they saw in a brief presentation. See also Partial report method; Sensory memory.
Partial report method
Procedure used in Sperling’s experiment on the properties of the visual icon, in which participants were instructed to report only some of the stimuli in a briefly presented display. A cue tone immediately after the display was extinguished indicated which part of the display to report. See also Delayed partial report method; Sensory memory; Whole report method.
Delayed partial report method
Procedure used in Sperling’s experiment on the properties of the visual icon, in which participants were instructed to report only some of the stimuli in a briefly presented display. A cue tone that was delayed for a fraction of a second after the display was extinguished indicated which part of the display to report. See also Partial report method; Whole report method.
Decays
Process by which information is lost from memory due to the passage of time.
Iconic memory / visual icon
Brief sensory memory for visual stimuli that lasts for a fraction of a second after a stimulus is extinguished. This corresponds to the sensory memory stage of the modal model of memory.
Short-term memory (STM)
A memory mechanism that can hold a limited amount of information for a brief period of time, usually around 30 seconds, unless there is rehearsal (such as repeating a telephone number) to maintain the information in short-term memory. Short-term memory is one of the stages in the modal model of memory.
Echoic memory
Brief sensory memory for auditory stimuli that lasts for a few seconds after a stimulus is extinguished.
Recall
Subjects are asked to report stimuli they have previously seen or heard.
Digit span
The number of digits a person can remember. Digit span is used as a measure of the capacity of short-term memory.
Chunking
Combining small units into larger ones, such as when individual words are combined into a meaningful sentence. Chunking can be used to increase the capacity of memory.
K. Anders Ericsson and coworkers (1980) trained someone to recall 79 numbers without error with chunking techniques.
Chunk
Used in connection with the idea of chunking in memory. A chunk is a collection of elements that are strongly associated with each other but weakly associated with elements in other chunks.
Phonological store
Component of the phonological loop of working memory that holds a limited amount of verbal and auditory information for a few seconds.
Phonological loop
The part of working memory that holds and processes verbal and auditory information. See also Central executive; Visuospatial sketch pad; Working memory.
Important for preventing decay.
Working memory
A limited-capacity system for temporary storage and manipulation of information for complex tasks such as comprehension, learning, and reasoning.
Introduced by Baddeley and Hitch (1974).
Visuospatial sketch pad
The part of working memory that holds and processes visual and spatial information. See also Central executive; Phonological loop; Working memory.
Articulatory rehearsal processes
Rehearsal process involved in working memory that keeps items in the phonological store from decaying.
Word length effect
The notion that it is more difficult to remember a list of long words than a list of short words.