NotesFAQContact Us
Collection
Advanced
Search Tips
Showing 526 to 540 of 54,646 results Save | Export
Peer reviewed Peer reviewed
Direct linkDirect link
Haverkamp, Nils; Holz, Christoph; Ubben, Malte; Pusch, Alexander – Physics Teacher, 2020
The Michelson interferometer is one of the key experiments in modern physics when it comes to the topic of interference (Box 1). Experiments using interferometry have a high historic relevance as well as uses in current areas of research (quantum erasers, gravitational wave detection) and are used in higher education. Because of the high cost of…
Descriptors: Measurement Equipment, Toys, Physics, Science Experiments
Peer reviewed Peer reviewed
Direct linkDirect link
Shi, Dexin; Lee, Taehun; Fairchild, Amanda J.; Maydeu-Olivares, Alberto – Educational and Psychological Measurement, 2020
This study compares two missing data procedures in the context of ordinal factor analysis models: pairwise deletion (PD; the default setting in Mplus) and multiple imputation (MI). We examine which procedure demonstrates parameter estimates and model fit indices closer to those of complete data. The performance of PD and MI are compared under a…
Descriptors: Factor Analysis, Statistical Analysis, Computation, Goodness of Fit
Peer reviewed Peer reviewed
PDF on ERIC Download full text
Metsämuuronen, Jari – International Journal of Educational Methodology, 2020
Pearson product-moment correlation coefficient between item g and test score X, known as item-test or item-total correlation ("Rit"), and item-rest correlation ("Rir") are two of the most used classical estimators for item discrimination power (IDP). Both "Rit" and "Rir" underestimate IDP caused by the…
Descriptors: Correlation, Test Items, Scores, Difficulty Level
Peer reviewed Peer reviewed
Direct linkDirect link
Morris, John; Winter, Margie – American Biology Teacher, 2021
We describe a series of three experiments in which students develop a model system for measuring the LC50 of household substances, using grass seed as the model organism. Students use statistical methods to compare two samples (using chi-square and Student's "t"-tests), conduct a two-level multifactor experiment to look at multiple…
Descriptors: Science Experiments, Measurement Techniques, Hazardous Materials, College Science
Peer reviewed Peer reviewed
PDF on ERIC Download full text
Erdogan, Ramazan; Yilmaz, Metin; Aydemir, Isa – Asian Journal of Education and Training, 2021
This research was conducted to determine Physical Education and Sports teachers' nutritional habits and physical activity levels during the global epidemic (covid-19) process. 156 (121 male, 35 female) volunteer physical education and sports teachers working in Elazig province participated in the study. In order to determine the demographic…
Descriptors: Physical Education Teachers, Nutrition, Eating Habits, Physical Activity Level
Peer reviewed Peer reviewed
Direct linkDirect link
Brauer, Jonathan R.; Day, Jacob C.; Hammond, Brittany M. – Sociological Methods & Research, 2021
This article presents two alternative methods to null hypothesis significance testing (NHST) for improving inferences from underpowered research designs. Post hoc design analysis (PHDA) assesses whether an NHST analysis generating null findings might otherwise have had sufficient power to detect effects of plausible magnitudes. Bayesian analysis…
Descriptors: Hypothesis Testing, Statistical Analysis, Bayesian Statistics, Statistical Significance
Peer reviewed Peer reviewed
Direct linkDirect link
Man, Kaiwen; Harring, Jeffrey R. – Educational and Psychological Measurement, 2021
Many approaches have been proposed to jointly analyze item responses and response times to understand behavioral differences between normally and aberrantly behaved test-takers. Biometric information, such as data from eye trackers, can be used to better identify these deviant testing behaviors in addition to more conventional data types. Given…
Descriptors: Cheating, Item Response Theory, Reaction Time, Eye Movements
Peer reviewed Peer reviewed
Direct linkDirect link
Su, Shiyang; Wang, Chun; Weiss, David J. – Educational and Psychological Measurement, 2021
S-X[superscript 2] is a popular item fit index that is available in commercial software packages such as "flex"MIRT. However, no research has systematically examined the performance of S-X[superscript 2] for detecting item misfit within the context of the multidimensional graded response model (MGRM). The primary goal of this study was…
Descriptors: Statistics, Goodness of Fit, Test Items, Models
Peer reviewed Peer reviewed
Direct linkDirect link
Ellis-Davies, Kate; Lew-Levy, Sheina; Fleming, Eleanor; Boyette, Adam H.; Baguley, Thom – Field Methods, 2021
Temporal aspects of child and adolescent time allocation in diverse cultural settings have been difficult to model using conventional statistical techniques. A new statistical approach, Egocentric Relational Event Modelling (EREM), allows for the simultaneous modelling of activity frequency, duration, and sequencing. Here, EREM is applied to a…
Descriptors: Foreign Countries, Children, Adolescents, Employment
Peer reviewed Peer reviewed
Direct linkDirect link
Kim, Eunsook; von der Embse, Nathaniel – Educational and Psychological Measurement, 2021
Although collecting data from multiple informants is highly recommended, methods to model the congruence and incongruence between informants are limited. Bauer and colleagues suggested the trifactor model that decomposes the variances into common factor, informant perspective factors, and item-specific factors. This study extends their work to the…
Descriptors: Probability, Models, Statistical Analysis, Congruence (Psychology)
Peer reviewed Peer reviewed
Direct linkDirect link
Cladera, Magdalena – Educational Assessment, Evaluation and Accountability, 2021
Students' feedback is usually gathered in institutions of higher education to evaluate the teaching quality from the students' perspective, using questionnaires administered at the end of the courses. These evaluations are useful to pinpoint the course strengths, identify areas of improvement, and understand the factors that contribute to…
Descriptors: Feedback (Response), Student Evaluation of Teacher Performance, Higher Education, Student Satisfaction
Peer reviewed Peer reviewed
Direct linkDirect link
Nikolakopoulou, Adriani; Mavridis, Dimitris; Chiocchia, Virginia; Papakonstantinou, Theodoros; Furukawa, Toshi A.; Salanti, Georgia – Research Synthesis Methods, 2021
Background: Network meta-analysis (NMA) produces complex outputs as many comparisons between interventions are of interest. The estimated relative treatment effects are usually displayed in a forest plot or in a league table and several ranking metrics are calculated and presented. Methods: In this article, we estimate relative treatment effects…
Descriptors: Networks, Meta Analysis, Intervention, Evaluation Methods
Peer reviewed Peer reviewed
Direct linkDirect link
Peter Schochet – Society for Research on Educational Effectiveness, 2021
Background: When RCTs are not feasible and time series data are available, panel data methods can be used to estimate treatment effects on outcomes, by exploiting variation in policies and conditions over time and across locations. A complication with these methods, however, is that treatment timing often varies across the sample, for example, due…
Descriptors: Statistical Analysis, Computation, Randomized Controlled Trials, COVID-19
Peer reviewed Peer reviewed
Direct linkDirect link
Cheung, Mike W.-L. – Research Synthesis Methods, 2019
Meta-analysis and structural equation modeling (SEM) are 2 of the most prominent statistical techniques employed in the behavioral, medical, and social sciences. They each have their own well-established research communities, terminologies, statistical models, software packages, and journals ("Research Synthesis Methods" and…
Descriptors: Structural Equation Models, Meta Analysis, Statistical Analysis, Data Analysis
Peer reviewed Peer reviewed
Direct linkDirect link
Wang, Xi; Liu, Yang; Robin, Frederic; Guo, Hongwen – International Journal of Testing, 2019
In an on-demand testing program, some items are repeatedly used across test administrations. This poses a risk to test security. In this study, we considered a scenario wherein a test was divided into two subsets: one consisting of secure items and the other consisting of possibly compromised items. In a simulation study of multistage adaptive…
Descriptors: Identification, Methods, Test Items, Cheating
Pages: 1  |  ...  |  32  |  33  |  34  |  35  |  36  |  37  |  38  |  39  |  40  |  ...  |  3644