This research aims to develop the product of the life skill education program (LSEP) which is accurate, credible, and effective. This research used the Plomp model. The model covers the input, process, output, outcome and consists of instrument, scoring guidance, and good or bad criteria. The instruments used in the model are the questionnaire,…

Understanding the response process used by test takers when responding to multiple-choice questions (MCQs) is particularly important in evaluating the validity of score interpretations. Previous authors have recommended eye-tracking technology as a useful approach for collecting data on the processes test taker's use to respond to test questions.…

In the article, we prove 18 inequalities involving inradius, a length of one side and one additional element of a given triangle. 14 of these inequalities are the necessary and sufficient conditions for the existence and uniqueness of such a triangle. All proofs are based on standard methods of calculus and can serve as a good demonstration of the…

This study aimed to develop the "Students' Perception of Instructional Feedback Scale" (SPIFS) determining a framework related to the perception of instructional feedback by students. The sequential exploratory mixed method was used in the study. The study was conducted during the instructional design course offered to sophomores in the…

The Behavioral Inflexibility Scale (BIS) is a recently developed measure of behavioral inflexibility, defined as rigid patterns of behavior that contrast with the need to be flexible when the situation calls for it. In this study, we sought to replicate previous findings on the psychometric properties of the BIS in a community sample. Data for…

Foreign language classroom anxiety (FLCA) is a popular construct in applied linguistics research, traditionally measured with the 33-item Foreign Language Classroom Anxiety Scale (FLCAS). However, recent studies have started utilizing the eight-item Short-Form FLCAS (S-FLCAS). There is therefore a need, which this study addressed in five…

Evaluating digital competencies has become a topic of growing interest in recent years. Although several reviews and studies have summarized the main elements of progress and shortcomings in this area, some issues are yet to be explored. Very little information is available about the ways of ensuring the validity and reliability of the instrument…

One of the challenges of discussing validity arguments for machine scoring of essays centers on the absence of a commonly held definition and theory of good writing. At best, the algorithms attempt to measure select attributes of writing and calibrate them against human ratings with the goal of accurate prediction of scores for new essays.…

The aim of this paper is to describe the process of modification of the research tool designed for measuring the development of personal epistemology--"Standardized Epistemological Understanding Assessment" (SEUA). SEUA was constructed as an improved version of the instrument initially proposed by Kuhn et al. SEUA was proved to be a more…

This study aimed to develop a reliable and valid scale to reveal the cognitive biases of university students in context of analytical thinking skills. During scale development process, firstly, a 5-point Likert type scale pre-trial form consisting of 60 items was created. The pre-trial form was applied to 450 students in Afyon Kocatepe University.…

School psychologists often have reason to suspect that students may not be putting forth full effort during diagnostic tests, or that questionnaire or rating scale data are not credible. However, such suspicions must be tested carefully to yield data-based conclusions. Structured, empirically supported methods for assessing the "response…

Despite widespread use of the Student Course Engagement Questionnaire (SCEQ; Handelsman, Briggs, Sullivan, & Towler, 2005) for the purposes of measuring college student engagement in scholarship of teaching and learning (SoTL) contexts, few studies have been published regarding its psychometric validity. The current study examined the…

This study sought to develop and validate an instrument to test the self-efficacy of teaching engineering design. This study is part of a larger effort to develop an instrument for both pre-service and in-service teachers of Science, Technology, and Engineering education. The focus of this study is on the initial instrument creation process and…

Background: Systematic collection of scientific evidence on the applicability an usability of model and its components is an important aspect of design and development research. Purpose: The aim of this study is to determine external validity of the organic reaction teaching model in terms of its practicability and potentiality in enhancing…

Introduction: There are different tests that assess attention and can help to make a differential diagnosis between ADHD and Learning Disabilities (LD), but there appears to be little research on the convergent and predictive validity of these tests. The aim of this study was to analyze the convergent validity of the EMAV, Caras, d2, AGL, CPT-II…