Chapter 9: The Organization of Knowledge in the Mind Flashcards
(46 cards)
Can be expressed in words and other symbols.
Declarative
Knowledge about how to follow procedural steps for performing actions.
Procedural
The use of multiple approaches and techniques to address a problem.
Converging operations
4 fundamental unit of symbolic knowledge.
Concepts
Categories
Semantic networks
Schemas
Idea about something that provides a means of understanding the world.
Concepts
Group of items into which different objects or concepts can be placed that belong together because they share some common features
or can act as a category.
Categories
3 categories in symbolic knowledge.
Natural Category
Artificial Category
Ad Hoc Category
A knowledge base that represents semantic
relations between concepts in a network.
Semantic networks
Mental frameworks of knowledge that encompass a number of interrelated concepts; creates a meaningful structure of related concepts.
Schemas
Groupings that occur naturally in the world, like birds or trees.
Natural categories
Groupings that are designed or invented by humans to serve particular purposes or functions.
Artifact categories
Categories that are just created for a moment or for specific purpose.
Ad hoc categories
Concepts appear to have this level of
specificity, a level within a hierarchy that is preferred to other levels.
Basic level (natural level)
Theories on concept organization.
Feature-based categories
Prototype theory
Exemplars
Theory-based categorization
A full theory of categorization can combine both defining and characteristic features, so that each category has both a prototype and a core; combining feature-based and prototype theories.
Synthesis
Must have this to be considered a member.
Feature-based categories
Category containing salient features that are true of most instances; ideal representation of the category.
Prototype theory
Takes different approach: grouping things together not by their defining features but rather by their similarity to an averaged model of the category.
Prototype theory
An abstract average of all the objects in the category we have encountered before. It is what the objects are compared with in order to put them into a category.
Prototype
Describe the prototype but are not necessary for it. Commonly are present in typical examples of concepts, but they are not
always present.
Characteristic Features
Categories that can be readily defined through defining features such as bachelor.
Classical concepts
Categories that cannot be so easily defined, such as game or death.
Fuzzy concepts
Refers to the defining features somethings must have to be considered an example of a category.
Core
Typical representatives of a category.
Exemplars