A number of researchers have explored the attributions that care staff make about challenging behavior. The expectation, based on behavioral and cognitive models, is that these attributions may help predict why staff inadvertently reinforce challenging behavior. Two studies of staff attributions about challenging behavior are reported. In the…

Conducting scientifically rigorous evaluations of character education interventions is complex. This evaluation guide is presented as a resource primarily for project directors who are federal grantees embarking on an evaluation of a character education intervention, although it contains useful information that can benefit other education…

Multiple measures administered in repeated waves within a nonequivalent dependent variables quasi-experimental design were used to test the effects of a reform-oriented instructional method called Enhanced Anchored Instruction (EAI) on the math achievement of 128 middle school students, including students with learning disabilities (LD). EAI…

This study investigated the effectiveness of conceptual change texts in remediating high school students' alternative conceptions concerning chemical equilibrium. A quasi-experimental design was used in this study. The subjects for this study consisted of a total 78 tenth-grade students, 38 of them in the experimental group and 40 of them in the…

In order to determine the extent to which the LOGO programming language can be used as a reinforcer for general problem solving ability, this field study used a production theory approach to problem solving as a conceptual model, and then translated the model into a LOGO oriented framework. The methodology tested the use of an algorithm in a…

A relationship between experimental and statistical controls is considered in an effort to show how this relationship affects the power of an experiment. Statistical rather than experimental controls are often used to reduce the effect of subjects at the extremes of individual difference. This results in attrition of actual experimental subjects.…

Describes how the lost letter technique, a research ploy involving leaving stamped, addressed letters in public locations and seeing if people will mail them, may be used to introduce students to experimental method in sociological research. Students manipulated letter location, size, and address in order to judge different effects such variations…

The purposes of evaluation design are stated. A description of experimental, quasi-experimental, survey, and naturalistic designs is presented. Emphasis is placed upon the identification of sources of invalidity in these designs that may compromise the accuracy of inferences regarding program effectiveness. (Author/JAZ)

The regression-discontinuity design (RDD) offers the possibility of making inferences about causal effects from observations on selected groups. Data from such a design are considered to have a truncated bivariate distribution. For the RDD, maximum likelihood parameter estimation procedures and tests of hypotheses are presented. (Author/BW)

A theoretical model of an effective experiential educational program for training evaluators is described. Two operating programs are assessed against the requirements of the model. The results of a quasi-experimental evaluation of the effectiveness of the programs in producing important educational outcomes are reported. (Author/PN)

Criteria for suitable research designs for use with large databases are suggested and analyzed. The advantages and disadvantages of several types of quasi-experimental designs are compared. Examples are taken from the authors' research with data from the Manitoba Health Services Commission. (Author/AL)

Examined the influence of curriculum preparation on children's content knowledge of dramatic play centers' themes, dramatic play behavior, and theme-relevant conversation during play. Found that theme familiarity may have been a critical factor. Posttest content knowledge was positively related to frequency of dramatic play. Teacher effects on…

Quasi-experimental investigation of effects of children's literature supported by class activities focusing on social cognition of peer relationships. Preschoolers who experienced the one-year intervention scored higher on social cognition of peer relationships (Social Knowledge Interview) than did children who were read nonrelated stories and…

A pretest-posttest control group design was used to measure the effect of practical life materials (e.g., tweezers, tongs, spoons) on kindergarten children's fine motor skill development. Experimental and control group teachers reported equal amounts of fine motor activity in their classrooms; however, significant interaction effects were found…

One-day groundwater education workshops held to educate soil conservation personnel were assessed for effect on participant knowledge using a quasiexperimental design. Participants were tested on their groundwater knowledge and attitude toward groundwater conservation before and after the training. Participant scores improved significantly in only…