Randomized experiments are often seen as the "gold standard" for causal research. Despite the fact that experiments use random assignment to treatment conditions, units are seldom selected into the experiment using probability sampling. Very little research on experimental design has focused on how to make generalizations to well-defined…

The effect of training from trained mothers and education from mother to mother on family functions and child-rearing attitudes was examined. The study was conducted in the 2010-2011 academic year in Ankara, and was modeled based on a pre-test, post-test control group experimental pattern. The study was conducted with a total of 96 mothers, with…

This article explores the effect of computerized scaffolding with different scaffolds (structuring vs. problematizing) on intra-group metacognitive interaction. In this study, we investigate 4 types of intra-group social metacognitive activities; namely ignored, accepted, shared and co-constructed metacognitive activities in 18 triads (6 control…

Attrition occurs when members of the initial research sample are not part of the final analysis sample, such as due to missing data or leaving the study. Both the overall sample attrition and the differences in attrition between the groups can affect the statistical equivalence of the sample and create potential for bias. The WWC has given careful…

Researchers and policy makers are increasingly dissatisfied with the "average treatment effect." Not only are they interested in learning about the overall causal effects of policy interventions, but they want to know what specifically it is about the intervention that is responsible for any observed effects. In the U.S., using…

The aim of this study is to investigate whether entrepreneurship trainings can reduce stereotypes against women entrepreneurship. With this aim socio-psychological obstacles to women entrepreneurship in Turkey are examined, and an experimental study is carried out. Entrepreneurship courses were given with a special emphasis on women…

The purpose of the present research is investigating the effects of regular exercise on the physical fitness levels among sedentary individuals. The total of 65 sedentary male individuals between the ages of 19-45, who had never exercises regularly in their lives, participated in the present research. Of these participants, 35 wanted to be…

The aim of the present paper was to study the impact of a gratitude building intervention on adolescents' gratitude and well-being indicators. The sample comprised 177 students aged 11--14 years (M[subscript Age] = 12.29 years, SD = 0.67, 58% male) attending two schools in North India. Using quasi-experimental design, participating classrooms from…

Background: We assessed the effectiveness of a handwashing program using hand sanitizer to prevent school absenteeism due to upper respiratory infections (URIs). Methods: This was a randomized, controlled, and open study on a sample of 1341 children 4-12 years old, attending 5 state schools in Almería (Spain), with an 8-month follow-up. The…

This study investigated the possibility that similar speech error patterns in children may arise from different patterns of underlying speech processing difficulties. Four Greek children (aged 4;7-5;6 years) with similar speech output difficulties were assessed with a range of experimental tasks with phonologically matched items in order to…

Web-based learning is generally a solitary process without teachers' on-the-spot assistance. In this study, a quasi-experiment was conducted to explore the effects of various combinations of Web-Based Cognitive Apprenticeship (WBCA) and Time Management (TM) on the development of students' computing skills. Three class cohorts of 124 freshmen in a…

In this study, the effectivity of jigsaw method, one of the cooperative learning models, on teaching the concepts related to sense organs and their functions to four-five year-old children in nursery class was analyzed. The study is in the semi-experimental design consisting of experimental and control groups and pretest and posttest. The sample…

Preventing antisocial behaviors appearing at an early age--before they become chronic--through effective early intervention programs, has become an important issue in recent years. In Turkey, the increase in the number of children at risk of antisocial behavior makes it necessary to get these behaviors under control at an early age through some…

This study designs and implements an adaptive learning management system based on Felder and Silverman's Learning Style Model and the Mashup technology. In this system, Felder and Silverman's Learning Style model is used to assess students' learning styles, in order to provide adaptive learning to leverage learners' learning preferences.…

The purpose of this study was to determine the effect of core training program on speed, acceleration, vertical jump, and standing long jump in female soccer players. A total of 40 female soccer players volunteered to participate in this study. They were divided randomly into 1 of 2 groups: core training group (CTG; n = 20) and control group (CG;…