Search results for author:"Jeffrey Douglas"
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Integration of Potential-Field and Digital Geologic Data for Two North American Geocscience Transects
Journal of Geological Education Vol. 38, No. 4 (1990) pp. 330–38
Significant information on the relative thickness of plutons, the structure of poorly exposed or concealed magnetic units, and possible evidence of mineralized ground are discussed. The techniques used to produce images that reveal the new...
Journal of Educational and Behavioral Statistics Vol. 38, No. 4 (August 2013) pp. 381–417
The item response times (RTs) collected from computerized testing represent an underutilized type of information about items and examinees. In addition to knowing the examinees' responses to each item, we can investigate the amount of time...
Journal of Psychoeducational Assessment Vol. 29, No. 1 (February 2011) pp. 39–46
The rigors of standardized testing make for numerous opportunities for examiner error, including simple computational mistakes in scoring. Although experts recommend that test scoring be double-checked, the extent to which independent double...
Constraint-Weighted a-Stratification for Computerized Adaptive Testing with Nonstatistical Constraints: Balancing Measurement Efficiency and Exposure Control
Educational and Psychological Measurement Vol. 69, No. 1 (2009) pp. 35–49
a-stratification is a method that utilizes items with small discrimination (a) parameters early in an exam and those with higher a values when more is learned about the ability parameter. It can achieve much better item usage than the maximum...
Journal of Educational and Behavioral Statistics Vol. 37, No. 5 (October 2012) pp. 655–670
Traditional methods for item selection in computerized adaptive testing only focus on item information without taking into consideration the time required to answer an item. As a result, some examinees may receive a set of items that take a very...
Instructional Tools in Educational Measurement and Statistics (ITEMS) for School Personnel: Evaluation of Three Web-Based Training Modules
Educational Measurement: Issues and Practice Vol. 27, No. 2 (2008) pp. 14–27
In the current No Child Left Behind era, K-12 teachers and principals are expected to have a sophisticated understanding of standardized test results, use them to improve instruction, and communicate them to others. The goal of our project, funded...
Engaging First-Year Undergraduates in Hands-On Research Experiences: The Upper Green River Barcode of Life Project
Journal of College Science Teaching Vol. 39, No. 3 (January 2010) pp. 39–45
To improve retention and engagement, first-year college science majors enrolled in University Experience orientation courses participated in a hands-on laboratory research experience: a DNA barcoding project to facilitate species identification....