Chapter 1 Flashcards
What is cognitive psychology?
The scientific study of the processes and products of the human mind
Sensation/absorption is…
taking information in from the world around you
Processing/perception/computation/integration is…
Making sense of sensory information
Responding is…
decisions and action
What is information theory
Posits that the information provided by a particular message is inversely related to the probability of its occurrence; the less likely it is, the more information it conveys
Hick & Hyman experiment
Takes time to process neural signal into key press etc..
Two limitations of info theory
o Amount of time it takes for into to flow through the nervous system (and visual system)
o Nervous system has a capacity of how much info it can handle in a given time frame
Filter Model
A theory based on the idea that information processing is restricted by channel capacity
Channel Capacity
The maximum amount of information that can be transmitted by an information- processing device
Describe what the filter model looks like
o When 2+ signals enter at the same time, they enter the sensory buffer (sensory store) together.
o Buffer extracts characteristics.
o Filter selects messages that share basic physical characteristics and passes them on to the limited capacity system responsible for analysis of higher order stimulus attributes.
o Unselected messages are held in the sensory buffer.
What task did Broadbent use to test his model
o One of the ways Broadbent achieved this was by simultaneously sending one message (a 3-digit number) to a person’s right ear and a different message (a different 3-digit number) to their left ear. Participants were asked to listen to both messages at the same time and repeat what they heard - people made fewer mistakes repeating back ear by ear and would usually repeat back this way.
Waugh and Norman’s model of Information Processing
proved that participants ability to recall letters declined as the number of interfering items increased (not rehearsing the letters)
Brown Peterson Task
An experimental paradigm in which subjects are given a set of items and then a number. Subjects immediately begin counting backward by threes from the number and, after a specific interval, are asked to recall the original items
Ecological Approach
A form of psychological inquiry that reflects conditions in the real world
Primary Memory
What we are aware of in the “immediately present moment”; often termed “immediate memory” or “short-term memory”