When the Trust Territory of the Pacific Islands gradually dissolved in the 1980s, the Republic of Palau assumed a greater responsibility for its own education system. In order to monitor the mathematical achievement of elementary school students during the transition from external to local control of educational procedures, basic skills…

An approach to simultaneous optimization of assignments of subjects to treatments followed by an end-of-mastery test is presented using the framework of Bayesian decision theory. Focus is on demonstrating how rules for the simultaneous optimization of sequences of decisions can be found. The main advantages of the simultaneous approach, compared…

Among the many problems faced by family researchers in conducting experimental research in field settings is that posed by nonequivalent and intact treatment and control groups. Nonequivalence refers to the assignment of individuals to treatments on a nonrandom basis, thus generating treatment groups with different expected values on one or more…

Adult leaders from 14 counties, divided into matched participating (57) and control (54) groups, were surveyed to evaluate whether Cooperative Extension Service programs on land use planning in Arkansas resulted in increased knowledge and more favorable attitudes toward such planning. Participants filled out attitudinal questionnaires before…

THIS PROJECT TESTED WHETHER THE TELE-LECTURE AND ELECTROWRITER COULD (1) BE USED EFFECTIVELY FOR THE SIMULTANEOUS INSTRUCTION OF ADULTS IN MULTIPLE REMOTE AREAS, AND (2) USED BY A MASTER TEACHER TO PROVIDE LEARNING EXPERIENCE FOR ADULTS WHICH IS AT LEAST AS EFFECTIVE AS FACE-TO-FACE INSTRUCTION. UTILIZING AMPLIFICATION AND MICROPHONE TRANSMISSION…

THE TWINSBURG ELEMENTARY GUIDANCE PROJECT (1) PROVIDED STUDENTS WITH AN ENVIRONMENT CONDUCIVE TO LEARNING, (2) PROVIDED IN-SERVICE TRAINING FOR THE FACULTY, (3) PLOTTED STUDENT PROGRESS BY USE OF THE IOWA TEST OF BASIC SKILLS (ITBS), AND (4) HELPED TEACHERS BECOME MORE EFFECTIVE IN THE CLASSROOM. STUDENTS WERE PLACED IN HOMOGENEOUS ABILITY GROUPS…

This study compared teacher demonstrations with a slide-tape methods of presenting demonstrations in graphic arts. It involved 134 eighth grade students and four teachers in four schools. Random assignment to treatments was made by classes. Four demonstrations randomly selected from a group were (1) composing a line of type, (2) locking-up a type…

An experiment was conducted to determine whether special reading instruction integrated with agricultural instruction would result in improved reading ability and increased achievement in subject matter. random assignment was made of vocational agriculture classes in 12 Maryland schools to experimental and control groups. Units on soil sampling…

The purpose of this study was to develop and test an instrument for analyzing interpersonal responsiveness in small groups. A category system was constructed comprised of two "functional" response categories and five "dysfunctional" categories which identified certain behaviors as likely to foster or interfere with "effective" relationships. To…

The purpose of this study was to ascertain whether or not the whole method or the part method of solving orthographic projection problems made any significant difference in student performance scores, and more specifically, to ascertain the relative effectiveness of these two approaches on seven criterion variables. The research design was…

By utilizing reinforcing and punishing light cues the verbal output and leadership status of Target Ss in a four-person group was manipulated. There were three conditions: Control (no light cues used); Agree, where Non-Target Ss were reinforced for agreeing with the Target, and punished for all other verbalizations; and Disagree, where Non-Target…

The aims of this study were to: (1) investigate the effectiveness of teaching machines in teaching vocabulary, (2) examine the relationships between various anxiety levels and the effectiveness of the teaching machine and the relationships between extroversion and introversion and the effectiveness of the machine, and (3) examine the possible…

This study assessed the effectiveness of five hours of distributed training on three-year-old children's comprehension and production of the passive, negative, possessive and negative passive syntactic structures. A comprehension test identified 20 children who did not evidence understanding of these structures. Subject were randomly assigned to…

The problem investigated in this study was: What changes in the culturally disadvantaged pupils' oral language development will result when pupils are provided a program which includes daily verbal interaction with their teacher focused on a variety of pupils' experiences, interests and needs? The subjects of this study were randomly selected from…

This article considers various kinds of probability and non-probability samples in both experimental and survey studies. Throughout, how a sample is chosen is stressed. Size alone is not the determining consideration in sample selection. Good samples do not occur by accident; they are the result of a careful design. (Author/JAZ)