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Questions and Answers
What is one of the benefits of categorization?
How does categorization assist in generalization?
What is indicated about the transition from raw physical coding to abstract conceptual coding?
What do concepts in categorization help identify?
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Which colors were marked as universal according to the categorization benefits?
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What is one key benefit of categorisation related to decision-making?
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How does categorisation help in language and communication?
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What role does categorisation play in visual scene perception?
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In medical diagnosis, how does categorisation aid healthcare professionals?
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What distinguishes a concept from a category?
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How does categorisation reduce complexity in understanding the environment?
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Why is categorisation important in education?
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Which of the following is FALSE about categorisation and its functions?
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Which statement accurately distinguishes between a concept and a category?
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What primarily characterizes ad hoc categories?
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Which of the following is an example of natural categories?
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Why is salience important in categorization?
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Which attribute is deemed significant for defining the category of cats?
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What is a common benefit of categorization?
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What is a feature that typically does NOT characterize cats?
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In categorization, what is primarily focused on regarding attributes?
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What property does the probability of generalization exhibit as similarity decreases?
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Which category level is characterized by attributes focused on nouns and adjectives?
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According to Rosch's classification, what type of condition has the most features listed?
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What is one major benefit of categorization mentioned?
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In what way did Rosch classify words into category levels?
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What observation can be made about biological versus non-biological conditions in feature listings?
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Which category generally includes fruits like Pink Lady, Envy, and Granny Smith?
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What does the probability of generalization generally do in response to decreasing similarity?
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What is noted about the attributes listed for superordinate level categories compared to basic and subordinate levels?
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How do basic level categories relate to correlated features?
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What effect does paying attention to one dimension have on categorisation according to Shepard, Hovland, and Jenkins (1961)?
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In selective attention, what happens to dimensions that are not focused on?
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Which of the following studies focused on how people learn categories with varying feature counts?
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According to the findings of Lin & Little (2023), what happens when more stimuli are added to each category?
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What is the purpose of transfer tests in category learning as per Nosofsky (1986)?
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What does the phenomenon of selective attention imply about cognitive capacity?
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How do skilled sailors demonstrate selective attention in categorisation contexts?
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What is a potential consequence of focusing solely on one dimension while categorising objects?
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Which of these exemplifies a folk devil according to the examples given?
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What effect does equal attention to all dimensions have on categorisation of objects?
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What can be a reason for why people continue to categorise despite potential harm?
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Which was NOT a focus of Shepard, Hovland, and Jenkins (1961)?
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What is a significant outcome of categorisation according to the discussed theories?
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According to the content, how does selective attention affect the perceived similarity of objects?
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Study Notes
Selective Attention, Categorisation & Generalisation
- We categorise items based on features that are salient (attention-grabbing) or relevant.
- Selective attention influences generalisations about new items.
Shepard, Hovland, & Jenkins (1961)
- Investigated how people learn categories with varying defining features.
- Participants learned to sort objects into categories based on color or shape.
- Over time, participants learned to focus on only the relevant dimension (e.g., color for candle/lightbulb), making differences in that dimension more pronounced and differences in other dimensions less noticeable.
Category Learning Difficulty
- Paying attention to one dimension accentuates differences on that dimension.
- Paying more attention to one dimension results in less attention to other dimensions, making objects appear more similar on unattended dimensions.
Garner (1974)
- Investigated how people learn categories when features are correlated, uncorrelated, or orthogonal (independent).
- Participants learned to sort objects based on line position and saturation.
- Performance was worse when features were correlated, suggesting that selective attention to one dimension can interfere with learning about other dimensions.
Lin & Little (2023)
- Investigated how the number of stimuli in a category affects learning.
- Increasing the number of stimuli within a category makes the categories effectively all the same along irrelevant dimensions.
- This highlights the importance of selective attention to relevant dimensions for efficient category learning.
Nosofsky (1986)
- Investigated how people represent categories using transfer tests.
- Participants were trained to classify stimuli based on two dimensions.
- Transfer performance was measured by how well they classified novel stimuli.
- Results showed a strong relationship between generalization and similarity, suggesting that people represent categories based on the similarity of features.
Benefits of Categorisation
- Reduces the complexity of the environment by simplifying information.
- Provides a basis for deciding appropriate action, as categories allow for rapid decision-making.
- Allows for identifying ambiguous or missing attributes by using shared features within a category.
- Enables generalisation to new examples by inferring properties based on category membership.
- Enables the organisation and relation of classes of objects and events through hierarchical structures (superordinate, basic, subordinate levels).
Importance of Basic Level Categories
- Basic level categories are the most informative, having a large number of correlated features.
- Basic level categories often correspond to nouns and adjectives in language.
Grounding by Similarity
- Natural categories: based on shared features (e.g., birds, apples).
- Man-made artifacts: based on shared function and design (e.g., chairs, clocks).
- Ad hoc categories: based on a common goal (e.g., things to take camping).
- Abstract schema or metaphors: based on shared metaphorical qualities (e.g., events in which kindness is repaid with cruelty).
Importance of Categorisation
- Plays a crucial role in making sense of the world by simplifying information, structuring knowledge, and allowing for rapid decision-making and generalisation.
- It enables communication, social interaction, and learning across various domains.
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Description
Test your understanding of selective attention and how it influences categorisation and generalisation in learning. Explore key studies, including those by Shepard, Hovland, and Jenkins, as well as Garner's insights on feature correlation. Challenge your knowledge on how attention shapes our perception of similarities and differences among objects.