It is a necessity for a researcher to ensure that the validity and reliability of the study is met to prove a discovery. However, there are still qualitative researchers who are still reckless and do not emphasize the concept of validity and reliability when designing, collecting, and analysing the research findings. The quality of a qualitative…

This book provides an overview and discussion of the evidence base of effective school inspections; reflecting on issues of validity and reliability of school inspections in relation to school effectiveness research, unintended consequences and emergent roles and responsibilities of Inspectorates of Education. Chapters include findings from…

This brief provides tips for forming a team of staff and consultants with the needed expertise to make key measurement decisions that will ensure high-quality data for answering the study's research questions. The brief outlines the main responsibilities of measurement team members. It also describes typical measurement tasks and discusses…

Background: Youth programs often rely on self-reported data without clear evidence as to the accuracy of these reports. Although the validity of self-reporting has been confirmed among some high school and college age students, one area that is absent from extant literature is a serious investigation among younger children. Moreover, there is…

This study was designed to determine the number of days of pedometer monitoring necessary to achieve reliable and valid estimates of a 1-year average of step counts in adults based on either consecutive days (CD) or random days (RD) of data collection. Twenty-three participants (16 women; M age = 38 years, SD = 9.9) wore a Yamax SW 200 pedometer…

The impact of biotechnologies on peoples' everyday lives continuously increases. Measuring young peoples' attitudes toward biotechnologies is therefore very important and its results are useful not only for science curriculum developers and policy makers, but also for producers and distributors of genetically modified products. Despite of…

This article discusses how methodological practices can shape and limit how mixed methods is practiced and makes visible the current methodological assumptions embedded in mixed methods practice that can shut down a range of social inquiry. The article argues that there is a "methodological orthodoxy" in how mixed methods is practiced…

This study establishes the reliability and validity of the Law Enforcement Officer Stress Survey (LEOSS), a short early-warning stress-screening measure for law enforcement officers. The initial phase of LEOSS development employed the behavioral-analytic model to construct a 25-item instrument specifically geared toward evaluation of stress in…

Curriculum-based measurement Reading (CBM-R) is an assessment procedure used to evaluate students' relative performance compared to peers and to evaluate their growth in reading. Within the response to intervention (RtI) model, CBM-R data are plotted in time series fashion as a means modeling individual students' response to varying levels of…

Researchers using structural equation modeling (SEM) aspire to learn about the world by seeking models with causal specifications that match the causal forces extant in the world. This quest for a model matching existing worldly causal forces constitutes an ontology that orients, or perhaps reorients, thinking about measurement validity. This…

This article examines available measures of perceived teacher support and presents findings from two studies exploring the psychometric properties of the Teacher Support Scale (TSS). In Study 1, an exploratory factor analysis suggested a hierarchical structure with four first-order factors (Invested, Positive Regard, Expectations, and Accessible…

This article revisits Paas and Van Merrienboer's (1993) measure of instructional efficiency, which can be applied by educational researchers to compare the effects of different instructional conditions on learning. This measure relied on performance and mental effort on the test, and as such gave an indication of the quality of learning outcomes.…

Quality measures were originally developed for research aimed at describing the settings that children spend time in and identifying the characteristics of these environments that contribute to children's development. They were also developed to guide improvements in practice. Increasingly, however, measures of quality are being used for further…

CSCL research has given rise to a plethora of analysis methods, all with specific analysis goals, units of analysis, and for specific types of data (chat, threaded discussions, etc.). This article describes some challenges of CSCL-analysis. The development of an analysis method for negotiation processes in multidisciplinary teams serves as an…

Four experienced stuttering researchers viewed videodisks of spontaneous speech from chronic stutterers and attempted to locate the precise onset and offset of individual stuttering events. Results showed interjudge disagreements that challenge the reliability and validity of onset and offset judgments. Highly agreed stuttering events were…