This article, a reprint from 1930, offers an interesting perspective on the importance of diagnostic and prescriptive teaching as well as the role of drill and the use of objectives in mathematics. (Author/MK)

An exploratory investigation of various incorrect solution procedures used by students attempting to solve a variety of forms of open sentences is reported. The study identifies specific incorrect strategies, indicates their relative frequency of occurrence, and attempts to offer some explanation for certain of the incorrect procedures used. (MK)

Examined computational errors made by educable mentally retarded students on the arithmetic subtest of the Wide Range Achievement Test. Retarded students had a lower percent of grouping and inappropriate inversion errors and a higher percent of incorrect operation errors than regular students had in Engelhardt's study. (Author)

An approach to error identification in swimming strokes is presented based on principles of hydrodynamics and human movement and their application in swimming, systematic observation, and recognition of inefficient movement patterns followed by correction measures. (JMF)

The notion that elderly adults respond more slowly than younger adults in order to ensure accuracy was investigated. The Matching Familiar Figures Test was administered to 10 males and 10 females from each of the following age groups: 30-39, 40-49, 50-59, 60-69, and 70-79 years old. (Author/SS)

A survey of how 17 recent experimental psychology textbooks treated the subject of random assignment of subjects to groups for purposes of experimentation is discussed. Findings indicate that the textbooks generally gave favorable coverage to the practice. Further research might improve this simplistic understanding. (Author/DB)

Nine types of errors occurring in the process of synthesizing research are described, with examples from a recent synthesis of research on teacher professional growth. Types of errors include excluding relevant literature, wrongly reporting details such as sample size, erroneously attributing findings to studies, and stating unwarranted…

This overview of the role of error and tolerance for error in measurement asserts that the generic precision associated with a measurement procedure is defined as the root mean square error, or standard error, in some relevant population. This view of precision is explored in several applications of measurement. (SLD)

Considers the existence of halo effects in individuals' evaluations of target communicators across different dimensions. Notes that halo effects result from raters' inability to discriminate among conceptually distinct and theoretically independent aspects of a target's behavior. Discusses current conceptions of halo error and suggests several…

Alerts communication researchers to potential errors stemming from the use of SPSS (Statistical Package for the Social Sciences) to obtain estimates of eta squared in analysis of variance (ANOVA). Strives to clarify issues concerning the development and appropriate use of eta squared and partial eta squared in ANOVA. Discusses the reporting of…

An experimental study was conducted of 2 different approaches to the correction of consistent subtraction errors in 6 students aged 12-13. Tentative findings demonstrate the superiority of the old way/new way method compared to use of Multibase Arithmetic Blocks and place value charts. (JDD)

Environmentally contaminated speech errors (irrelevant words or phrases derived from the speaker's environment and erroneously incorporated into speech) are hypothesized to occur at a high level of speech processing, but with a relatively late insertion point. The data indicate that speech production processes are not independent of other…

Why a computer error occurred is considered by analyzing the binary system and decimal fractions. How the computer stores numbers is then described. Knowledge of the mathematics behind computer operation is important if one wishes to understand and have confidence in the results of computer calculations. (MNS)

An articulation screening procedure that considered the phonological content of the child's error was compared to a procedure that treated all errors as equally important with 333 preschool children. Predicting eventual therapy placement was more accurate when only selected errors were used. (Author/DB)

Two studies that avoided methodological problems associated with inconclusive previous reports found that 6-year-olds had less reliable feeling-of-knowing (FOK) judgments but greater FOK accuracy than did 10- or 18-year-olds. Moreover, 18- and 70-year- olds had equally reliable FOK judgments and equivalent FOK accuracy. (RH)