Chapter 8 Flashcards
Inference
The logical interpretations and conclusions that were never part of the original stimulus material
Semantic memory
Our organized knowledge about the world
Includes general, lexical, and conceptual knowledge
Schemas
General knowledge about an object or event
Concept
Your mental representation of a category
Situated cognition approach
We make use of information in the immediate environment or situation
Our knowledge depends on the context that surrounds us
The prototype approach
You decide whether a particular item belongs to a category by comparing this item with a prototype
Suitable when the category has numerous members
Prototype
The item that is the best, most typical example of a category
Prototypicality
The degree to which items are representative of their category
Graded structure
Begins with the most representative members, and continues on through the non-prototypical members
Typicality effect
People judge typical items faster than non typical items
Semantic priming effect
People respond faster to an item if it was preceded by an item with similar meaning
Family resemblance
No single attribute is shared by all examples of a concept; however, each example has at least 1 attribute in common with some other examples
The 3 levels of categorization
Superordinate (most general)
Basic (most common)
Subordinate (most specific)
What area of the brain is activated for superordinate vs subordinate levels of categorization?
Super: prefrontal cortex
Sub: parietal cortex and occipital cortex
Validity
A test’s ability to predict a person’s performance in another situation
The exemplar approach
We first learn information about some specific examples of a concept, then we classify each new stimulus by deciding how closely it resembles all of those specific examples
People do not need to perform any kind of abstraction process
For categories that have few members
What half of the brain stores exemplars vs prototypes?
Proto: left
Exemplars: right
Network approaches
More concerned about the interconnections among related items
Node
One unit located in the network
Spreading activation
When activation spreads from one node to another
ACT-R approact
Adaptive Control of Thought-Rational
Attempts to explain all of cognition
Propositional network
Propositional network
Pattern of interconnected propositions
Proposition
The smallest unit of knowledge that can be judged either true or false
The parallel distributed processing approach
Proposes that cognitive processes can be represented by a model in which activation flows through networks that link together a large number of simple, neuron-like units