scholarly journals Neuroimaging Findings for Developmental Coordination Disorder (DCD) in Adults: Critical Evaluation and Future Directions

2020 ◽  
Author(s):  
Agnieszka Anna Reid
Keyword(s):  
Developmental Coordination Disorder ◽  
Critical Evaluation ◽  
Future Directions ◽  
Coordination Disorder

scholarly journals Optimizing Walktrap’s Community Detection in Networks Using the Total Entropy Fit Index

2021 ◽  
Author(s):  
Laura Jamison ◽  
Alexander P. Christensen ◽  
Hudson Golino
Keyword(s):  
Random Walks ◽  
Developmental Coordination Disorder ◽  
Graph Analysis ◽  
Total Entropy ◽  
Future Directions ◽  
New Approach ◽  
Fit Index ◽  
Coordination Disorder ◽  
The Impact ◽  
Best Fit

*Exploratory graph analysis* (EGA) is used to estimate the structural organization of variables, uncovering latent dimensions as clusters of nodes. EGA first estimates a weighted network then uses the Walktrap algorithm to detect clusters of nodes. The Walktrap algorithm uses random walks to estimate the topography of a graph. The number of random walks taken (*t*) is typically set statically. However, the impact of *t* and the properties determining its optimization have yet to be fully researched. The present study proposes and tests a new approach optimizing *t* by iteratively varying *t* and employ *total entropy fit index* as a fit index to identify the number of steps that best fit the data using a Monte-Carlo simulation varying data structure characteristics. Results indicate that the proposed method is most effective for a higher number of variables per factor and when variables are polytomous. Varying *t* is important as spurious connections are introduced between communities. An empirical example using the Developmental Coordination Disorder Questionnaire is shown demonstrating improved measure interpretation by optimizing the Walktrap algorithm. The paper finishes with a discussion about the relevance of the findings and future directions for research.

Number Acuity of Children With Developmental Coordination Disorder (DCD)

2013 ◽  
Author(s):  
Alice Gomez ◽  
Manuela Piazza ◽  
Antoinette Jobert ◽  
Ghislaine Dehaene ◽  
Stanislas Dehaene ◽  
...  
Keyword(s):  
Developmental Coordination Disorder ◽  
Coordination Disorder
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