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Miller, Portia; Votruba-Drzal, Elizabeth; McQuiggan, Meghan; Shaw, Alyssa – Journal of Educational Psychology, 2017
There are currently 2 principal models of publicly funded prekindergarten programs (pre-K): targeted pre-K, which is means-tested, and universal pre-K. These programs often differ in terms of the economic characteristics of the preschoolers enrolled. Studies have documented links between individual achievement in school-age children and the…
Descriptors: Preschool Education, School Demography, Economic Status, Preschool Children
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Unlu, Fatih; Bozzi, Laurie; Layzer, Carolyn; Smith, Arthur; Price, Cristofer; Hurtig, Richard – Society for Research on Educational Effectiveness, 2013
In experimental studies, researchers are often interested in secondary research questions that explore important aspects of main findings, such as whether or not program effects vary according to the level of fidelity in which the program has been implemented; or according to the dosage received by individuals participated in the program. In this…
Descriptors: Fidelity, Program Implementation, Randomized Controlled Trials, Research Problems
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Canivez, Gary L.; Konold, Timothy R.; Collins, Jason M.; Wilson, Greg – School Psychology Quarterly, 2009
The Wechsler Abbreviated Scale of Intelligence (WASI; Psychological Corporation, 1999) and the Wide Range Intelligence Test (WRIT; Glutting, Adams, & Sheslow, 2000) are two well-normed brief measures of general intelligence with subtests purportedly assessing verbal-crystallized abilities and nonverbal-fluid-visual abilities. With a sample of…
Descriptors: Construct Validity, Test Validity, Factor Structure, Intelligence Tests