This study examined bias reduction in the eight nonequivalent comparison group designs (NECGDs) that result from combining (a) choice of a local versus non-local comparison group, and analytic use or not of (b) a pretest measure of the study outcome and (c) a rich set of other covariates. Bias was estimated as the difference in causal estimate…

This study aimed to determine if metacognitive strategies help increase reading comprehension in fifth grade students. Participants included a control group of 31 fifth grade students who were not taught metacognition reading strategies, and a comparable treatment groups of 43 fifth grade students who were taught metacognition reading strategies.…

In this research, it is aimed to examine the effects of Montessori education on the mentally retarded individuals in the special education who have had Montessori education and who have not had it. 24 trainable mentally disabled male students who had and did not have Montessori education in a private school in Kayseri participated in the study.…

This study was planned to determine the effect of a series of 8-week recreational activities on the personal, social and general adjustment levels and academic success of high school students (between 14-16 years). The data was collected from a total of 36 students, made up two groups each containing 18 members. They were all recruited voluntarily…

This study compares the effectiveness of context clue strategy instruction to wide reading practices in terms of their impact on the vocabulary knowledge of students who read at frustration level. The participants were 44 sixth-grade students from a middle grades school. Students were randomly assigned to experimental and control conditions. The…

The evaluation of intervention effects is an important objective of educational research. One way to evaluate the effectiveness of an intervention is to conduct an experiment that assigns individuals to control and treatment groups. In the context of pretest/posttest designed studies, this is referred to as a control-group pretest/posttest design.…

Many studies have shown that children with Autism Spectrum Disorders show lack of skills using social and communication skills. However, they understand, assimilate and retain better information using virtual aids. Therefore, the objective of this study has been to assess the effectiveness of an augmented reality training program based on visual…

The purpose of this study was to investigate the efficacy of a preventive counseling program for improving psychological hardiness (PsyH) and the positive use of social network sites (SNSs). The sample consisted of 30 students from Mu'tah University in Jordan who were randomly assigned into either an experimental group (15) or a control group…

Purpose: Starting Thinking Training at an early age is important. However, few studies were found regarding Thinking Training programs for pre-school children and the contributions of these programs to children's social problem-solving. In this context, the TMPT Program was developed for pre-school children and the effect of the program on 5-6…

The aim of this study was to determine the effects of recreational activities and sports on the quality of life of the mothers of autistic children. The population of this study is the mothers of autistic children living in Isparta. A total of twenty (20) mothers were chosen using random sampling method and split into control and application…

In this study, the effect of patience training on patience and well-being levels of university students was examined. The sample group of the study consisted of 1.2.3. and 4th grade students with a total of 30 students from Konya Necmettin Erbakan University, Eregli Education Faculty. For the collection of data, the Patience Scale developed by…

Objectives: This study aims to investigate the effects of the "Thank you-Sorry-Love" (TSL®) program on posttraumatic growth (PTG) and cortisol level in parents of children with cancer. Methods: A total of 15 mothers of children with cancer were randomly assigned to the experimental group (n = 7) with the TSL intervention or a control…

The purpose of this research is to examine the effect of the "Incredible Years (IY) Child Training Program" on behavioral problems, social competence, and social problem-solving skills. The research was performed using a pretest-posttest experimental design with a control group to determine the effects of the IY program on the level of…

Text-based interventions are effective for smoking cessation, but have not been tested in rural older adults. The purpose of this study was to compare the feasibility, acceptability and preliminary efficacy of a text-based Scheduled Gradual Reduction (SGR) program to a non-SGR text messaging support condition among rural older adults. Adults over…

This study was conducted to determine the effects of I Can Problem Solve Program (ICPS) on preschool children's perspective taking skills. Participants were 51 children who were attending two public preschool. In the study, pretest-posttest-retention test control group desing was used. There were an experimental group and two control groups in the…