Testing Variances in Psychological and Educational Research

1994 ◽  
Vol 19 (1) ◽  
pp. 23-42 ◽  
Author(s):  
Philip H. Ramsey

A review of the literature has shown that robust procedures for testing variances have become available. The two best procedures are one proposed by O’Brien (1981) and another by Brown and Forsythe (1974). An examination of these procedures for a wide variety of populations confirms their robustness and indicates that optimal power can usually be obtained by applying a test for kurtosis to aid in the decision between these two procedures.

2021 ◽  
pp. 875647932110186
Author(s):  
Kimberly Sorrentino

Objective: Continuous improvement is vital to ensuring quality in sonography education. The aim of this literature review was to compile and summarize the current literature on accreditation, credentialing, and quality improvement initiatives in sonography education. Materials & Methods: Four sonography-specific journals and six health science/academic databases were searched using the terms education, sonography, ultrasound, accreditation, credential, and quality. The search was limited to findings in the English language, from 2000 to 2020. Results: The search uncovered only 19 articles on this topic in sonography education. The vast majority of papers focused on quality improvement initiatives, while just a few concentrated on accreditation or credentialing. Conclusion: Much of the contemporary sonography educational literature focuses on clinical, lab, or didactic quality improvement initiatives. Overall, it is clear that more research is needed in the field of sonography education. This review provides examples of quality initiative research in other allied health fields that can be useful guides for future sonography educational research.


Author(s):  
Dorit Tubin

This paper explores how the three concepts of vision, metaphor, and fantasy serve educational research for a better understanding of teachers’ minds regarding educational issues. Drawing upon data based on a review of the literature, the following has been found: a semantic comparison showed that the concepts were similar in their abilities to create visual images and function as communication media, but differed in origin, time orientation, reality reflection, activity orientation, and consensus creation. Empirical findings demonstrated the importance of question formulation, the researcher’s position, and the scope of the study. In conclusion, the paper proposes how the different concepts might help in designing improved research and better educational usage of the concepts.


2018 ◽  
Vol 27 (4) ◽  
pp. 575-594 ◽  
Author(s):  
Eleni Oikonomidoy ◽  
Rachel G. Salas ◽  
Fares J. Karam ◽  
Amber N. Warren ◽  
Tamara Steinmann

Author(s):  
Scott J. Warren ◽  
Greg Jones ◽  
Beth Dolliver ◽  
Richard A. Stein

In the context of instructional design and educational research, there remains a vexing question. What is a game? How is it different from simulations? In turn, how is each distinct from virtual worlds? A review of the literature on the use of games for learning reveals either a complete lack of definition by authors or some wide disparities in terms of how each explains the necessary components that make up either a game in general, or an educational game specifically. Without clear definitions to which theorists can use to discuss their myriad learning designs, the findings that emerge from research may not translate effectively into useful discourse because there is no agreement as to whether the original design qualifies as a game or simulation. This paper explores the historical evolution of the definitions of the terms in the fields of philosophy and education and suggests a means by which they may be constructed and dynamically updated.


1966 ◽  
Vol 30 (4) ◽  
pp. 379-384
Author(s):  
DE Mattson
Keyword(s):  

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