Explored the relationship among conceptual tempo, age, sex, and performance of preschool children on the visual association subtest of the Illinois Test of Psycholinguistic Abilities. (Author/DB)

Ten dyslexic boys and 10 matched controls were asked to draw a person and write a composition. The two groups are compared on time spent on tasks, number of words written, and proportions of spelling and grammatical errors. (SJL)

Proposes an error gravity/distribution factor to give a mathematically consistent evaluation method to error analysis. Such an approach assumes that "seriousness" of error is related to frequency of output and not to notions of degree of communicative difficulty. Distribution of error type is also taken into account. (PJM)

The type and frequency of a variety of clerical errors were investigated in protocols from the 1949 and 1974 editions of the WISC. Potential consequences of such errors and a discussion of ways to lower the rate are presented. (Author)

Diagnostic teaching is described and discussed. Different types of errors are explained and examples of errors and their possible diagnoses are given. (MK)

A study to determine if "random" or "careless" errors in multiplication made by individual students take on discernible patterns is described. Implications for teaching are discussed. (MK)

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…