Design-based methods have recently been developed as a way to analyze randomized controlled trial (RCT) data for designs with a single treatment and control group. This article builds on this framework to develop design-based estimators for evaluations with multiple research groups. Results are provided for a wide range of designs used in…

Design-based methods have recently been developed as a way to analyze data from impact evaluations of interventions, programs, and policies (Freedman, 2008; Lin, 2013; Imbens and Rubin, 2015; Schochet, 2013, 2016; Yang and Tsiatis, 2001). The non-parametric estimators are derived using the building blocks of experimental designs with minimal…

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…

This article describes a study aimed at solving the problem of school refusal by implementing a preventive program and raising the awareness of parents, social workers, and school personnel. The school children involved in this study were reported by their parents and school social workers to refuse to go to school, and according to the children's…

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…

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…

Many physical educators today are teaching lifetime sports, including outdoor activities such as cycling. Even though cycling is a low impact exercise that aids stamina and fitness, little is known about additional benefits in other areas including agility, balance, and explosive power. The purpose of this study was to ascertain if there are…

The aim of the study was to investigate the effect of the "Training Program to Promote the Knowledge and Awareness of Prospective Preschool Teachers" developed to promote the knowledge and awareness of prospective preschool teachers concerning emotional neglect and abuse. The study group comprised a total of 120 prospective teachers (60…

Pre-school education has been greatly expanded in the United Kingdom in the last two decades and further expansion is planned. Its provision allows parents to take up employment thus increasing family incomes and it is expected to narrow the gap between socially disadvantaged children and their peers. The latter is important as studies have shown…

Previous studies in both typically and atypically developing children have shown that approximate number system (ANS) abilities predict formal mathematical knowledge later on in life. The current study investigated whether playing specially designed training games that targets the ANS system using nonsymbolic stimuli only would improve preschool…

This quasi-experimental post-test only control group designed quantitative study examined whether or not members of an experimental group of participants who utilized two metacognitive strategy training regimens experienced a significant increase in their ACT mathematics sub-test scores compared to a group of students who did not utilize either of…

A pilot study was conducted on a multimodal educational tool, Peruvian Food Chain Jenga (PFCJ), with 5th-grade students (N = 54) at a public charter school. The goal was to compare the effectiveness of the multimodal tool to a more traditional presentation of the same materials (food chain) using an experimental/control design. Data collection…

This study investigated a current trend in anger-management groups labeled as leadership development. The goal of the investigation was to determine if leadership is a critical factor in working with angry youth. A total of 52 middle school-aged adolescents from 2 schools served as participants. Of those, 18 participants received a strength-based,…

Objective: To examine the impact of a sleep course on sleep-related behaviors, mood, and anxiety in college students. Participants: Participants were 145 students enrolled in either the sleep course (n = 70) or a psychology course (n = 75); data were collected in September 2014, November 2014, and February 2015. Methods: Sleep characteristics and…