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Related Concept Videos

Complementation Tests00:49

Complementation Tests

A complementation test is a simple cross to identify whether the two mutations are located on the same gene or different genes. It was first performed by Edward Lewis in the 1940s while working on fruit flies. He developed the test to identify the location and arrangement of different mutations on chromosomes.
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
Multiple Comparison Tests01:13

Multiple Comparison Tests

Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
Sign Test for Matched Pairs01:17

Sign Test for Matched Pairs

The sign test for matched pairs offers a robust method for comparing two paired samples, often for the effects of an intervention in one of them. This method is very useful in situations where the underlying distribution of the data is unknown. The test compares two related samples—often pre- and post-treatment measurements on the same subjects—to determine if there are significant differences in their median values.
To conduct the sign test, we first calculate the differences in value between...
Associative Learning01:27

Associative Learning

Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Wilcoxon Signed-Ranks Test for Matched Pairs01:09

Wilcoxon Signed-Ranks Test for Matched Pairs

The Wilcoxon signed-rank test for matched pairs evaluates the null hypothesis by combining the ranks of differences with their signs. It essentially tests whether the median of the differences in a population of matched pairs is zero. Since the test incorporates more information than the sign test, it generally yields more trustable conclusions. This test also does not require the data to follow a normal distribution, but two conditions must be met for it to be applicable: (1) the data must...
Constraints and Statical Determinacy01:26

Constraints and Statical Determinacy

In structural engineering, the equilibrium of a system is not only determined by its equations of equilibrium but also with the help of constraints. Constraints refer to restrictions on the motion of a system. The proper combinations of constraints can minimize the total number of constraints needed to maintain a system in mechanical equilibrium. When this happens, the system is said to be statically determinate. For such systems, the unknown reaction supports can be estimated using equilibrium...

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Related Experiment Video

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A Semantic Priming Event-related Potential (ERP) Task to Study Lexico-semantic and Visuo-semantic Processing in Autism Spectrum Disorder
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Multiply-constrained semantic search in the Remote Associates Test.

Kevin A Smith1, David E Huber, Edward Vul

  • 1Department of Psychology, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0109, United States. k2smith@ucsd.edu

Cognition
|April 17, 2013
PubMed
Summary

People solve complex problems by focusing on one constraint at a time and using previous guesses to inform new ones. This research reveals systematic strategies for navigating memory when facing multiple decision-making factors.

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Area of Science:

  • Cognitive Psychology
  • Human Decision-Making
  • Memory Retrieval

Background:

  • Many real-world decisions involve balancing multiple constraints, such as job selection criteria (salary, location, responsibilities).
  • Understanding the cognitive processes behind solving multiply-constrained problems is crucial for various fields.

Purpose of the Study:

  • To investigate the strategies individuals employ when generating solutions for problems with multiple constraints.
  • To analyze the semantic relationships between problem cues, participant guesses, and final answers.

Main Methods:

  • Utilized the Remote Associates Test (RAT) to elicit participant guesses for multiply-constrained problems.
  • Employed Latent Semantic Analysis (LSA) to quantify the semantic similarity between generated guesses and problem cues/answers.
  • Analyzed the sequential nature of guesses to identify problem-solving strategies.

Main Results:

  • Individuals tend to focus on one constraint at a time when generating potential solutions.
  • A local search strategy is evident, where new guesses are influenced by previously generated ones.
  • Two primary systematic strategies were identified in solving multiply-constrained problems.

Conclusions:

  • People do not simultaneously process all constraints but rather sequentially.
  • Problem-solving involves an iterative process of retrieving and refining information from memory based on existing guesses.
  • Findings offer insights into how semantic information is accessed and combined when dealing with complex choices.