Problems associated with randomization tests in single- case experiments are discussed. This article follows a discussion of randomization tests in single case studies in the same issue of this journal. (See TM 505 799; 505 801).(Author/JKS)

The purpose of this paper is to demonstrate how many more subjects are required to achieve equal power when testing certain hypotheses concerning proportions if the randomized response technique is employed for estimating a population proportion instead of the conventional technique. (Author)

McNemar's discussion of error reduction in a mixed two-group design fails to provide an algebraic presentation of this error reduction. This paper presents not only the algebraic development of the error term but shows that under certain conditions mixing may increase experimental error. (Author)

The selection of subjects for research on learning disabilities is a function of contemporary notions about learning disabilities, the purpose of the study and level of knowledge about the topic, and practical constraints. Denigrations of the extant research database, along with unaffordable demands for subject selection and descriptions, threaten…

Can infants below age 1 year learn words in one context and understand them in another? To investigate this question, two groups of parents trained infants from age 9 months on 8 categories of common objects. A control group received no training. At 12 months, infants in the experimental groups, but not in the control group, showed comprehension…

This study investigated the possibility of enhancing the level of preschoolers number sense by introducing two intervention programmes, "Lets think!" and "Young children with special educational needs count, too!" Forty-five preschoolers, mean age 66.4 months, were randomly assigned to the experimental and control groups. The…

Basic motor skills development is achieved through the implementation of different types of physical education programs. The purpose of this study was to investigate and to compare the effect of a developmentally appropriate music and movement program and of a developmentally appropriate physical education program on the development of jumping and…

We assessed whether exposure to amodal properties in bimodal stimulation (e.g. rhythm, rate, duration) could educate attention to amodal properties in subsequent unimodal stimulation during prenatal development. Bobwhite quail embryos were exposed to an individual bobwhite maternal call under several experimental and control conditions during the…

Visual angles are defined as the angle between line of sight up to the mean point of a relative distance and the relative distance itself. In one experiment, we examined the functional aspect of visual angle in relative distance perception using two different layouts composed by 14 stakes, one of them with its center 23 m away from the observation…

This study examines the effects of representational movement on long-term retention and recollection of academic content. The researcher hypothesized that students who used representational movement to elaborate on their understanding of chemical equations would demonstrate improved long-term ability to solve chemical equations. The study…

The current study aimed to investigate the effects of a proposed blended learning strategy in teaching medical vocabulary at Arabian Gulf University (AGU) on some outcomes of the learning process. The study attempted to assess the effects of the proposed strategy on pre-medical students' achievement, attitudes towards the English language, and…

The purpose of this study was to examine the relative effects of the single-focus interventions (vocabulary and comprehension) and the streamlined multi-component model. The program of research included a development and pilot phase, an initial experimental study and a follow-up study to further refine and test the model. Results presented here…

This report describes the findings of an analysis of a series of action research projects conducted by Vigo County School Corporation at Terre Haute South Vigo High School (hereinafter referred to as South Vigo). During the 2008-2009 school year, 19 teachers at South Vigo participated in independent action research studies regarding the extent to…

The authors conducted a quasi-experimental investigation of effects on achievement by grade-level teams focused on improving learning. For 2 years (Phase 1), principals-only training was provided. During the final 3 years (Phase 2), school-based training was provided for principals and teacher leaders on stabilizing team settings and using…

Students with disabilities must meet many testing demands, given the current emphasis on accountability and state competency testing. The purpose of this project was to develop and field test a computerized program to teach the Test-Taking Strategy (Hughes, Schumaker, Deshler, & Mercer, 1988) to secondary-level students with disabilities. The…