Similarity
Similarity - Related Videos
01:26
Causes of Similarity-Dissimilarity Effect
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2025
The similarity-dissimilarity effect, a fundamental concept in social psychology, explains how interpersonal similarities and differences influence attraction and social interactions. This effect is supported by three key psychological perspectives: balance theory, social comparison theory, and consensual validation.Balance Theory and Cognitive ConsistencyBalance theory, developed by Fritz Heider, posits that individuals seek cognitive consistency in their relationships. When two people share...
01:23
Factors Influencing Attraction III: Similarity
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2025
The similarity hypothesis suggests that individuals are more likely to form relationships with others who share similar attitudes, beliefs, values, and interests. This concept has been widely studied in social psychology, demonstrating that perceived similarity fosters interpersonal attraction. In an experiment supporting this hypothesis, participants were presented with fabricated information indicating that strangers held attitudes similar to their own. The results showed that participants...
08:12
A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
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Cited by 3 •
2022
The protocol presents an experimental psychophysics paradigm to obtain large quantities of similarity judgments, and an accompanying analysis workflow. The paradigm probes context effects and enables modeling of similarity data in terms of Euclidean spaces of at least five dimensions.
06:38
Pattern-based Search of Epigenomic Data Using GeNemo
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2017
Unlike DNA sequence data, epigenomic data are not readily subjected to text-based searches. Presented here are the procedures to use an upgraded version of GeNemo, a web-based bioinformatics tool, to conduct pattern-based searches for similarities in epigenomic data comparing available online databases including Encyclopedia of DNA Elements with user's data.
05:21
Evolutionary Relationships - Concepts
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2019
Humans have been attempting to properly classify living things since Aristotle made the first attempt during the 4th century BC. Aristotle’s system was improved upon during the Renaissance and then, subsequently, by Carolus Linnaeus in the mid 1700’s. These more formal classification and organization systems grouped species by their physical similarity to one another. For example, all vertebrates have a backbone, but invertebrates do not. Traits like the backbone are called synapomorphies,...
FAQs
Context and prior experience can change which features receive the most weight during a similarity judgment. The same pair may seem more closely related when a particular meaning, behavior, or category is relevant, but less related when attention shifts to shape or color. This flexibility helps explain variation in recognition, learning, memory, and social judgments.
Similarity judgments depend on the attributes selected for comparison, including shape, color, meaning, behavior, and category membership. Two stimuli can therefore appear close on one dimension and distant on another. Identifying the relevant feature set allows psychologists to interpret a judgment more precisely and examine how people organize information rather than treating similarity as a fixed property.
Computational models provide a formal way to examine how people represent knowledge and produce similarity judgments. A model can be compared with ratings or comparison-task responses to determine whether its representation captures observed relationships among stimuli. This approach connects observable choices with proposed mental structure, helping researchers study why different people or contexts may yield different similarity patterns.
In perceptual organization, similarity can guide the grouping of items that share noticeable properties. Grouping changes how a display or set of experiences is interpreted, because related elements are processed as belonging together rather than as isolated units. Psychological study can compare judgments based on visible properties with those based on meaning or category, revealing which relationship controls organization.
Psychologists commonly collect similarity ratings or use comparison tasks in which participants evaluate relationships between stimuli. The resulting responses provide behavioral evidence about which items are treated as related and which attributes may matter. Researchers can then examine response patterns directly or use them to evaluate computational models of mental representation.
Similarity research supports cognitive assessment by revealing how a person organizes and compares information. In education, it can clarify relationships among concepts and the role of prior experience in learning. In human-computer interaction, findings can inform how information is arranged so that related items are easier to recognize, compare, or navigate.
Similarity can influence social judgments when people compare others by behavior, meaning, or perceived category membership. Those comparisons may affect which individuals are seen as related or distinct, while context can shift the basis of judgment. Studying these patterns helps psychologists separate the features used in social comparison from broader processes involved in organizing information.