The authors report the contextualization of effect sizes within mathematics anxiety research, and more specifically within research using the Mathematics Anxiety Rating Scale (MARS) and the MARS for Adolescents (MARS-A). The effect sizes from 45 studies were characterized by graphing confidence intervals (CIs) across studies involving (a) adults…

This study reports the results of the first systematic investigation into Astro 101 students' conceptual and reasoning difficulties with cosmology. We developed four surveys with which we measured students' conceptual knowledge of the Big Bang, the expansion and evolution of the universe, and the evidence for dark matter. Our classical test theory…

This study was conducted to determine whether podcasting, in conjunction with mobile MP3 technology used outside the classroom, affects student achievement. Additionally, data were collected and analyzed with regard to gender, selected family demographics, and learning styles. A pretest and posttest was administered to students. The results of the…

The purpose of this study was to determine if professional development using school contextual data would provide deeper understanding and attention to the important issue of student bullying. This was primarily a quantitative study. Phase 1 involved using data from the pre-existing student and teacher needs assessments to create the school…

This study aims, firstly, to examine whether gender plays a decisive role in starting romantic intimacy during the emerging adulthood period; secondly, to compare emerging adults who are assigned different gender roles, in terms of starting romantic intimacy; and thirdly, to analyze the level at which self-esteem and gender roles predict the…

This study investigated the influence of host community on industrial relations practices and policies using Agbara community and Power Holding Company of Nigeria PLC as a case. The study adopted both the qualitative and quantitative methods. A total of 120 samples were drawn from the population using the simple random sampling technique in which…

This article discusses issues associated with statistical testing conducted with data from clustered school samples. Empirical researchers often conduct tests of statistical inference on sample data to ascertain the extent to which differences exist within groups in the population. Typically, much school-related data are collected from students.…

As an alternative to statistical testing, effect size has a non-monotonic linkage with practical importance. Besides random variance and systematic bias, a proper interpretation of effect size hinges on its implication to outcomes of deductive and/or inductive enquiries. Consequently, a small effect size might suggest an important finding, and the…

The purpose of this study was to measure noise levels during aerobics classes and to examine how outer hair cell (OHC) function, using distortion product otoacoustic emissions (DPOAEs), may be affected by this exposure. Fifty individuals (48 women and 2 men, ages 19-41 years) participated in 50-min aerobics classes. Noise levels were measured…

Null hypothesis significance testing (NHST) is the most widely accepted and frequently used approach to statistical inference in quantitative communication research. NHST, however, is highly controversial, and several serious problems with the approach have been identified. This paper reviews NHST and the controversy surrounding it. Commonly…

A pretest-posttest comparison group design was used to investigate the effects of a semantic mapping lesson plus visual display versus a semantic mapping lesson alone on adolescents' with learning disabilities (LD) ability to gain and maintain factual knowledge from expository social studies material. In addition, a posttest only comparison group…

This study examined the difference between less-skilled and skilled L1 Slovene English as foreign language (EFL) students in foreign language (L2) fluency and L2 orthographic skills; 93 less-skilled Grade 7 L1 Slovene students and 102 skilled Grade 7 L1 Slovene students participated in the study. The results showed that skilled readers performed…

Science and technology course that helps to improve cognitive aspects and enhance the creativity of the individuals is an important part of elementary school education as a core course. Students may gain scientific knowledge, scientific process skills, and attitudes during their science learning process. This study aimed to determine upper…

The current study is an attempt to investigate whether any statistically significant relationship existed between Iranian EFL learners' ambiguity tolerance (AT) and their reading strategy use. To this end, three instruments of Survey of Reading Strategy (Mokhtari & Sheorey, 2002), Second Language Ambiguity Tolerance Scale (Ely, 1995), and a…

Universities and colleges are very interested in understanding the factors that influence their students' academic performance. This paper describes a study that was conducted at a mid-sized public university in the mid-south, USA, to examine this issue. In this study, the 10-scale, Learning and Study Strategies Inventory (LASSI) (Weinstein et…