PHYSIOLOGICAL PSYCHOLOGY Flashcards
the ability to
focus on specific stimuli or
locations
Attention:
attending to one thing
while ignoring others
Selective Attention:
one stimulus interfering with the
processing of another
stimulus
• Distraction:
paying
attention to more than one
thing at a time
• Divided Attention:
a rapid shifting of attention usually caused by a stimulus such as a loud noise, bright light, or sudden movement
Attentional Capture:
: eye
movements from one
location or object to
another
Visual Scanning
An experiment by Colin
Cherry through the use of
dichotic listening
technique
– shadowing
Attended ear
Cherry found that participants could identify if it was a female’s voice or a male’s voice in the unattended ear, but could not report what was said.
Broadbent’s Filter Model of
Attention
participants were unaware
of a word that had been
repeated 35 times in the
unattended ear
Neville Moray (1959)
ability to focus on one
stimulus while filtering out
other stimuli
Cocktail Party Effect:
•holds all incoming information for a fraction of a
second and transfers to the filter
Sensory Memory:
dentifies the message that is being attended to based on its
physical characteristics, lets attended message to pass through the
detector in the next stage
• Filter: i
processes the information from the attended message to
determine higher-level characteristics of the message such as its
meaning
• Detector:
Output of the detector is sent to STM which holds information for and also transfers information into LTM
10-
15 seconds
Broadbent’s model is called an because the filter eliminates the unattended information
right at the beginning of the flow of information
early selection model
shadow message presented to one ear and ignore message presented to the other ear presented listener’s name to the unattended ear, about a third of the participants detected it
• Moray (1959):
experiment | participant’s
attention jumped from one
ear to the other and then
back again
Gray and Wedderburn
(1960): “Dear Aunt Jane”
– participants took the
meaning of the words into
account (Dear 7 Jane, 9 Aunt
6)
Gray and Wedderburn
(1960): top-down processing
selection occurred in two stages
and replaced Broadbent’s filter with an attenuator
Anne Treisman (1964):
: analyzes the incoming message in terms of
physical characteristics (high or low-pitched, fast or slow),
language (how the message groups into syllables or words),
meaning (how sequences of words create meaningful phrases)
Attenuator
• : language
and meaning can be used to separate messages
Treisman’s Attenuation Model of Attention: both messages
pass through the attenuator but the attended message
emerges at full strength and the unattended message are
attenuated (present but weaker than attended message)
Treisman’s Attenuation Model of Attention
smallest signal strength that can barely be detected
low threshold – hearing our name from across the room
• Threshold:
contains words, stored in memory, each of
which has a threshold for being activated
Dictionary Unit:
participant listened to an ambiguous sentence in the attended ear while biasing words were presented in the unattended ear the word must have been processed to the level of meaning even though it was unattended
Donald MacKay (1973):
amount of information people
can handle and sets a limit
on their ability to process
incoming information
Processing Capacity: