What were the conclusions of the sperling experiment

What were the conclusions of the Sperling experiment on sensory memory where an
array of letters was quickly flashed on the screen for participants to recall?
Measuring capacity and duration of sensory memory: (Sperling, 1960) Array of letters flashed
quickly on screen, Whole report method = report as many as possible, Partial report method =
cued to report from just one row, Delayed partial report = when the cue tones were delayed for 1
second after the flash, subjects were able to report only slightly more than 1 letter in a row.
Subject recall = more than 3 items - they must have has access to at least 3 items in each row
when the arrow was shown
What is the capacity and duration of sensory memory?
What is the difference between sensory memory and short-term memory?
How can short-term memory be expanded?
What is chunking?
What is interference in the context of short-term memory? Know the different types.
What did Wickens' experiment that required subjects to memorize lists of words from
certain categories, find?
What is interference? Name two kinds.
Interference: forgetting because different memories compete with each other
Two types: Proactive (old items interfere with retrieval of new items) and Retroactive (newly
studied items interfere w/ retrieval of old items)
What is release from proactive interference?
What is the capacity and duration of short-term memory?
What is wrong with suggesting a single short-term memory store that handles all kinds of
Stimuli?
“In some ways the central executive functions more like an attentional system than a memory
store” - Baddeley 1997
So vague

Define working memory and its components.