Notes that many employers use student's grade point average (GPA) as the criterion for interviewee selection, presenting problems for students who may have gotten low grades early in their college careers but higher grades later. Presents a formula for deriving an "equivalent GPA" for such students by taking into account education, experience, and…

Describes a card game designed to teach the scientific method, inductive thinking, and data analysis strategies. The objective is to guess the rule that differentiates the "legal triplets" (set of three playing cards) from the "illegal" ones. Suggestions are provided for a debriefing session in which the players reflect on…

Presents reasons for, and examples of, addressing environmental issues in secondary mathematics classrooms. (Author/MKR)

This statement of the National Institute of Mental Health Editors' Consortium discourages piecemeal publication of small amounts of data from the same study, requires study authors to inform editors about other manuscripts from the same study, and requires authors to submit copies of closely related manuscripts. (JDD)

Discusses five basic issues that teachers should address as they begin an action research project: (1) the main question to be answered; (2) relevant data; (3) specific data, and its collection method; (4) data analysis; and (5) interpretations or implications to be drawn from the data. (RS)

Presents an interview with Emerson J. Elliott, Commissioner of Education Statistics, on the subject of leadership, government service, and the relationship between research and statistics. Some principles of leadership that are distinctive to the federal bureaucracy are addressed. (GR)

Presents and discusses implications of a set of measures of information. Definitions of relevant terms, including fact, data, representation, information, and knowledge, are given; four levels of processing data are explained (i.e., data transfer, data selection, data analysis, and data reduction); and relationships between information and…

Review of research methodologies used in studies of online public access catalog (OPAC) users finds that a variety of research methodologies--e.g., surveys, transaction log analysis, interviews--have been used with varying degrees of expertise. It is concluded that poor research methodology resulting from limited training and resources limits the…

Discusses two approaches to data analysis in pretest-posttest research designs in which researcher has not formed groups based on pretest or used pretest information in assigning participants to groups, thus ruling out two-way analysis of variance. Describes use of repeated-measures analysis of variance and two-group analysis of covariance in…

Presents general principles for cleaning data sets. Suggests techniques: check for column shifts, data completeness, marginal frequencies, and selected cross-tabulations; examines a sample of cases. Gives strategies for preventing data processing errors. (SK)

Applied structural equation modeling to evaluation of cross-lagged panel models. Self-reports of physical and mental health at three time points spanning four-year interval were analyzed to illustrate cross-lagged analysis methodology. Data were analyzed from 856 patients with hypertension, diabetes, heart disease, or depression. Cross-lagged…

Discusses problems in analyzing change in nonexperimental data. Tests three ordinary least-squares regression models to illustrate similarities/differences. Notes that model based on raw difference change scores applies best to studying change processes; model based on outcome scores applies best to assessing consequences of change; and model…

Notes that intergenerational theories of family functioning sparked interest in empirical investigations that test intergenerational relationships. Presents test of difference scores enabling researchers to compare related and unrelated dyads, thus creating comparison group when using only two generations. Contrasts procedure with correlational…

Using a microcomputer system that allows students to develop and use their own instruments for evaluating teacher performance, students take the task seriously and use more questions than on standardized instruments. A method of data aggregation results in more accurate and specific suggestions for improving teacher effectiveness. (SK)

The study, with 79 rehabilitation therapists evaluating 21 single-subject graphs, found that the low interrater agreement often associated with visual analysis of single-subject data may be improved by simple supplements (such as trend lines) to visually inspected charts. (Author/DB)