The relationship between habitat physical complexity and recruitment of the coral reef damselfish, Pomacentrus amboinensis : an experimental study using small-scale artificial reefs

2003 ◽  
Vol 50 (1) ◽  
pp. 73-77 ◽  
Author(s):  
Hiroyuki Kawasaki ◽  
Mitsuhiko Sano ◽  
Takuro Shibuno
Keyword(s):  
Experimental Study ◽  
Coral Reef ◽  
Artificial Reefs ◽  
Small Scale ◽  
Pomacentrus Amboinensis ◽  
The Relationship ◽  
Physical Complexity

Design and Development of a Simulation for Testing the Effects of Instructional Gaming Characteristics on Learning of Basic Statistical Skills

2018 ◽  
pp. 256-277
Author(s):  
Elena Novak ◽  
Tristan E. Johnson
Keyword(s):  
Experimental Study ◽  
Learning Environments ◽  
Game Design ◽  
Lessons Learned ◽  
Small Scale ◽  
Instructional Interventions ◽  
Design And Development ◽  
Actual Learning ◽  
The Relationship ◽  
Practical Implications

Considerable resources have been invested in examining the game design principles that best foster learning. One way to understand what constitutes a well-designed instructional game is to examine the relationship between gaming characteristics and actual learning. This report discusses the lessons learned from the design and development process of instructional simulations that are enhanced by competition and storyline gaming characteristics and developed as instructional interventions for a study on the effects of gaming characteristics on learning effectiveness and engagement. The goal of the instructional simulations was to engage college students in learning the statistics concepts of standard deviation and the empirical rule. A pilot study followed by a small-scale experimental study were conducted to improve the value and effectiveness of these designed simulations. Based on these findings, specific practical implications are offered for designing actual learning environments that are enhanced by competition and storyline gaming elements.

Quantity judgment and the mass-count distinction across languages: Advances, problems, and future directions for research

2018 ◽  
Author(s):  
David Barner ◽  
Alan Bale
Keyword(s):  
Experimental Study ◽  
Judgment Task ◽  
Scientific Enterprise ◽  
Future Directions ◽  
Quantity Judgment ◽  
The Relationship ◽  
Linguistic Cognition

We review advances in the experimental study of the mass-count distinction and highlight problems that have emerged. First, we lay out what we see to be the scientific enterprise of studying the syntax and semantics of mass-count distinction, and the assumptions we believe must be made if additional progress is to occur, especially as the empirical facts continue to grow in number and complexity. Second, we discuss the new landscape of cross-linguistic results that has been created by widespread use of the quantity judgment task, and what these results tell us about the nature of the mass-count distinction. Finally, we discuss the relationship between the mass-count distinction and non-linguistic cognition, and in particular the object-substance distinction.

External Investigators' Follow-Up Intentions When Whistleblowers Report Healthcare Fraud: The Effects of Report Anonymity and Previous Confrontation

2020 ◽  
Vol 32 (2) ◽  
pp. 91-101
Author(s):  
Steven E. Kaplan ◽  
Danny Lanier ◽  
Kelly R. Pope ◽  
Janet A. Samuels
Keyword(s):  
Experimental Study ◽  
Early Detection ◽  
Data Availability ◽  
Medical Provider ◽  
Perceived Credibility ◽  
The Relationship ◽  
Critical Investigation

ABSTRACT Whistleblowing reports, if properly investigated, facilitate the early detection of fraud. Although critical, investigation-related decisions represent a relatively underexplored component of the whistleblowing process. Investigators are responsible for initially deciding whether to follow-up on reports alleging fraud. We report the results of an experimental study examining the follow-up intentions of highly experienced healthcare investigators. Participants, in the role of an insurance investigator, are asked to review a whistleblowing report alleging billing fraud occurring at a medical provider. Thus, participants are serving as external investigators. In a between-participant design, we manipulate the report type and whether the caller previously confronted the wrongdoer. We find that compared to an anonymous report, a non-anonymous report is perceived as more credible and follow-up intentions stronger. We also find that perceived credibility fully mediates the relationship between report type and follow-up intentions. Previous confrontation is not significantly associated with either perceived credibility or follow-up intentions. Data Availability: Data are available upon request.

scholarly journals Maternal toxoplasmosis and the risk of childhood autism: serological and molecular small-scale studies

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jamila S. Al Malki ◽  
Nahed Ahmed Hussien ◽  
Fuad Al Malki
Keyword(s):  
Neurodevelopmental Disorders ◽  
Repetitive Behavior ◽  
Saudi Arabian ◽  
Childhood Autism ◽  
Small Scale ◽  
Autistic Children ◽  
High Prevalence ◽  
Life Threatening ◽  
The Relationship ◽  
Delayed Language Development

Abstract Background Toxoplasmosis resulting from infection with the Toxoplasma parasite has become an endemic disease worldwide. Recently, a few studies have reported a high prevalence of Toxoplasmosis infections among Saudi Arabian women. This disease could become life threatening for pregnant women and for immunodeficient people. There is evidence that infections during pregnancy, especially in the early stages, are associated with neurodevelopmental disorders. Autism disorder represents one of the most common neurodevelopmental disorders worldwide; it is associated with delayed language development, weak communication interaction, and repetitive behavior. The relationship between prenatal toxoplasmosis and autism in childhood remains unclear. The present study aims to report a link between maternal toxoplasmosis and autistic offspring among Saudi Arabian women. Method Blood samples (36 maternal, 36 from their non-autistic children, and 36 from their autistic children) were collected for serological and molecular evaluation. Results A toxoplasmosis infection was reported for 33.34% of participants using an ELISA assay (5.56% IgG+/IgM+, 11.11% IgG−/IgM+, and 16.67% IgG+/IgM-); however, a nested PCR assay targeting B1 toxoplasmosis specific genes recorded positive tests for 80.56% of the samples. In addition, the present study detected several points of mutation of mtDNA including NADH dehydrogenase (ND1, ND4) and Cyt B genes and the nDNA pyruvate kinase (PK) gene for autistic children infected with toxoplasmosis. Conclusion Considering previous assumptions, we suggest that a maternal toxoplasmosis infection could have a role in the development of childhood autism linked to mtDNA and nDNA impairment.

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