Conceptual Knowledge Flashcards

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1
Q

Define ‘conceptual knowledge’

A

Knowledge that enables people to recognize objects and events and to make inferences about their properties

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2
Q

Conceptual knowledge exists in the form of…

A

concepts

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3
Q

Concepts

A

A mental representation of a class or individual, also the meaning of objects, events, and ideas.

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4
Q

What is a way in which we organize concepts?

A

Categories

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5
Q

Categories

A

Groups of objects that belong together

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6
Q

Definitional approach to categorization

A

We decide whether something is a member of a category by determining whether the object meets the definition of the category

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7
Q

Family resemblance

A

Things in a particular category resemble one another in a number of ways. This approach allows for variation

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8
Q

Prototype approach

A

We decide whether something is a member of a category by determining whether it is similar to a typical representation of the category “prototype”

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9
Q

High typicality

A

A category member closely resembles the category prototype

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10
Q

Low typicality

A

A category member does not closely resemble a typical member of the category

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11
Q

Prototypical objects have high family resemblance because…

A

their characteristics have a large amount of overlap

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12
Q

Typicality effect

A

Ability to judge highly prototypical objects more rapidly

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13
Q

Differentiate between the exemplar approach and prototype approach

A

The prototype approach uses a typical member to compare to and the exemplar approach uses many examples

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14
Q

Rosch distinguished three levels of categories…

A

1) the superordinate level
2) the basic level
3) the subordinate level

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15
Q

The superordinate level

A

Most general category level aka global level

Ex; furniture

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16
Q

The basic level

A

Psychologically special because it is the level above which most information is lost and below which little is gained

Ex; table

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17
Q

The subordinate level

A

Most specific category level aka specific level

Ex; kitchen table

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18
Q

We often assign objects _____ level names.

A

basic

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19
Q

Semantic network approach

A

Understanding how concepts are organized in the mind by proposing that concepts are arranged in networks

20
Q

Collin and Quillian’s Hierarchical Model

A

Specific concepts are at the bottom and more general are at the top.

21
Q

Cognitive economy

A

A feature of some semantic network models in which properties of a category that are shared by many members of a category are stored at a higher (more general) level node in the network

22
Q

Example of cognitive economy: The property “can fly” would be stored at the node for bird rather than at the node for “canary”. Why is this?

A

Including “can fly” at the node for every bird would take up too much storage space. Makes the network more efficient

23
Q

The hierarchical model verifies the sentence verification technique that…

A

it should take longer to answer “yes” to the statement “A canary is an animal” than to “A Canary is a bird” because greater distance results in longer reaction time

24
Q

Spreading activation

A

Activity that spreads out along any link in a semantic network that is connected to an activated node

25
Q

Lexical decision task was used to…

A

study the idea that spreading activation can influence priming

26
Q

Two main criticisms of Collin and Quillian’s model:

A

1) Can’t explain the typicality effect

2) Questioned cognitive economy

27
Q

Connectionism AKA parallel distributed processing approach

A

A network model of mental operation that proposed that concepts are represented in networks that are modelled after neural networks

28
Q

Key property of the connectionist network

A

A specific category is represented by activity that is distributed over many units in the network

29
Q

Connectionist network is made up of…

A

1) Input units
2) Hidden units
3) Output units

30
Q

Input units

A

activated by stimuli from the environment

31
Q

Hidden units

A

input units send signals to hidden units. They are located between input and output units

32
Q

Output units

A

contain the final output of the network

33
Q

Connection weight determines…

A

the degree to which signals sent from one unit either increase or decrease activity in the next

34
Q

Connection weight corresponds to…

A

what happens at a synapse

35
Q

Activation of units depend on two things:

A

1) the signal that originates in the input

2) the connection weights throughout the network

36
Q

Connectionist networks are created by a…

A

learning process that shapes the networks so information about each concept is contained in the distributed pattern of activity across a number of units

37
Q

Four proposals about how concepts are represented in the brain

A

1) Sensory-functional hypothesis
2) Multiple factor approach
3) Semantic category approach
4) Embodied approach

38
Q

Sensory-functional hypothesis

A

Our ability to differentiate living things and artifacts depends on a memory system that distinguishes functions

39
Q

Multiple factor approach

A

We utilize many features (multiple factors) when grouping objects together based on similarity

40
Q

Semantic category approach

A

There are specific neural circuits in the brain for some specific categories

41
Q

Embodied approach

A

Our knowledge of concepts is based on reactivation of sensory and motor processes that occur when we interact with an object

Link between perception and motor responses

42
Q

Semantic dementia

A

A general loss of knowledge for all concepts

43
Q

Semantic dementia led researchers to propose what model?

A

The hub and spoke model

44
Q

The hub and spoke model

A

Proposes that areas of the brain that are associated with different function are connected to the anterior temporal lobe (ATL)

45
Q

Damage to one of the specialized brain areas (the spokes) causes…

A

specific deficits such as inability to identify artifacts

46
Q

Damage to the ATL (hub) causes…

A

general deficits (semantic dementia)