Four experiments comparing behavior of children from Los Angeles, California, and Nuevo San Vicente, Baja California, Mexico, were conducted to analyze cooperative and competitive behavior of Anglo American city and Mexican rural children. Eighty children from each setting, 40 of age 7-9 and 40 of age 10-11, equally divided by sex, served as…

THIS RESEARCH CONCERNING CONCEPTUAL BEHAVIOR INVESTIGATED BOTH THE DEVELOPMENTAL ASPECTS OF CONCEPTUAL BEHAVIOR IN A CONTROLLED LABORATORY SITUATION AND THE RELATIONSHIP OF CONCEPT LEARNING IN THIS LABORATORY SETTING TO ACHIEVEMENT IN CURRICULAR AREAS OF JUNIOR HIGH SCHOOL. THE GENERAL PLAN FOR THIS STUDY INVOLVED STRATIFIED RANDOM SELECTION AND…

A conservation problem of numerical equivalence which 80% of adults reliably fail and 40% of third graders pass was developed, and responses of 188 subjects (Grades 2, 3, 5, 7, 9, 11 and college) to it and related number conservation and probability problems indicated that the differences in nonconservation were rooted in subjects' different…

This vocational physics individualized student instructional module on jacks (simple machines used to lift heavy objects) contains student prerequisites and objectives, an introduction, and sections on the ratchet bumper jack, the hydraulic jack, the screw jack, and load limitations. Designed with a laboratory orientation, each section consists of…

The report describes two experiments involving the ability of preservice social studies teachers to stage score moral thought statements. Stage scoring is defined as keeping a record of statements in accordance with the stages of moral development originated by psychologist Lawrence Kohlberg. The two experiments involved the use of three stage…

A major theme of this series of papers is the need to build evaluation and experimentation as a component part of educational planning. This paper addresses the structure of the evaluation and experimentation component in a country and the training of evaluators. The training discussion includes the possible modes of training--on-the-job training,…

One hundred forty-five studies concerning individualized programs of mathematics instruction were reviewed. The summary of results presented tends to support the effectiveness of individualized programs, but notes possible difficulties in implementing them. (SD)

Presents task analysis of the laboratory inquiries of the BSCS Yellow Version. Three important deficiencies are identified: (1) Students do not identify and formulate problems; (2) Students get little chance to conduct investigations; and (3) Post-laboratory discussions are not indicated. (MA)

Discusses the benefits of thermochromic transformations for studying thermodynamic properties. Describes an experiment that uses a commercially available dye, attains equilibrium rapidly, employs a simple, single-beam spectrophotometer, and is suitable for both physical chemistry and introductory chemistry laboratories. (TW)

Describes how a Polaroid camera can be modified for spectroscopic experiments. Reviews experimental procedures and discusses results that students can obtain within one normal laboratory period. Suggests additional experiments for investigating emission from other sources. (ML)

In this article, part I of a series, the forensic methods used in "typing" human blood, which as physical evidence is often found in the dried state, are outlined. Background information about individualization, antibody typing, fresh blood, dried blood, and additional systems is provided. (CW)

Proposes a series of experiments that integrate analytical techniques in order that students are able to compare, based on their laboratory results, the relative reliabilities of the most common therapeutic drug monitoring methods. Discusses materials, procedures, and results of three experiments on the determination of drug concentration by…

Describes a simple, inexpensive experiment in which students determine the heats of combustion of common solid, liquid, and gaseous fuels. The experimental apparatus, procedures, calculations and results are discussed. (CW)

Describes a program to support lectures on analytical centrifugation, and to illustrate the manner in which useful analytical data about macromolecules can be obtained from simple centrifugation studies without the need for mathematical expertise. Discusses the background, methods, calculations, and results involved in this activity. (CW)

This article introduces a mini-series on research methods in school psychology. A conceptual overview of research methods is presented, emphasizing the degree to which each method allows the inference that treatment affects outcome. Experimental and nonexperimental, psychometric, descriptive, and meta-analysis research methods are outlined. (SLD)