Discussed are the mathematical methods for detecting a variety of common error patterns within the bar-coded identification numbers utilized in conjunction with scanning devices. Schemes for the use of check digits are examined that ensure conditions for detecting errors of specific types, including single digit error, transposition error, twin…

An analysis of 41 recently published articles in the "American Journal on Mental Retardation" and the "Journal of Mental Deficiency Research" found a higher than expected probability of Type I research errors, suggesting that approximately 20 percent of the statistically significant results may be erroneous. (DB)

This paper discusses the speech monitoring process that underlies overt self-repairing of speech errors; the covert repair hypothesis, dealing particularly with explaining the variety of disfluency types from a restricted set of repair principles; quantitative and qualitative characteristics of disfluency in people who stutter; and the covert…

Two experiments explored the tongue-twister paradigm, which involves reciting a word string several times over at a fast rate, using a task variation that minimizes articulatory and mnemonic load. The task was found to elicit good rates of "pure" articulatory errors. Two features had a significant error-reducing effect: repeated…

Two studies focused on aspects of the rating process in performance assessment. The first, which involved 15 raters and about 400 medical students, made the "committee" facet of raters working in groups explicit, and the second, which involved about 200 medical students and four raters, made the "rating-occasion" facet…

This study evaluated the omission patterns of case markers in the spontaneous speech of 12 Dutch and German adult speakers with agrammatic aphasia within the framework of Chomsky's case theory. Data supported the hypothesis that, if no case assigner is produced, the noun will receive nominative case by default or the case-marking morpheme will be…

Evaluated in three experiments a dynamic systems theory account of perseverative errors on "A-not-B" task. Found that 9-month-olds perseverated when reaching for identical targets, but made nonperseverative responses when reaching in the presence of a highly distinctive B target. Reach direction was jointly determined by target's…

Three studies involved kindergartners in a categorization task with an adult in collaborative and noncollaborative conditions; tested subjects on memory of who had performed which actions; and asked them to recategorize items independently. Results suggested that one process contributing to children's internalization of knowledge may involve…

Two common and seemingly independent error patterns, namely consonant harmony and gliding, are examined for their typological characteristics based on cross-sectional and longitudinal evidence from young children's developing phonologies. Data are drawn from the published literature and from the developmental phonology archives at Indiana…

Examined in 2 studies the ability of 2- and 3-year-olds to learn to use tools via imitation. Found that when shown a correct solution to a tool-using task, all children managed at least a partial solution. When shown an incorrect followed by a correct solution, 2-year-olds produced a partial solution and most 3-year-olds produced a full solution.…

This study is an investigation of the effects of multiple listenings on error-detection identification and labeling accuracy among brass and woodwind instrumentalists. Examples derived from band music used balanced four-voice incipits performed with differing timbres, and errors that occurred in one or multiple voices. Response rates for correct…

Error inconsistency is often cited as a characteristic of children with speech disorders, particularly developmental apraxia of speech (DAS); however, few researchers operationally define error inconsistency and the definitions that do exist are not standardized across studies. This study proposes three formulas for measuring various aspects of…

Impaired speech prosody has been identified as a critical feature of suspected childhood apraxia of speech (sCAS). Lexical stress productions of children with sCAS have been characterized as 'excessive/equal/misplaced'. This investigation examines two potential explanations of this particular deficit, articulatory difficulty and impaired intrinsic…

The history of mathematics is full of rich examples that can help students to see the place of the discipline within our cultural heritage. Valuable as this can be, it also has the unfortunate side-effect of making students think that all the math has already been done and they do not get a sense that the subject is dynamic and growing.…

Thomson was the first of very few researchers to have studied oral reading errors as a means of addressing the question: Are dyslexic readers different to other readers? Using the Neale Analysis of Reading Ability and Goodman's taxonomy of oral reading errors, Thomson concluded that dyslexic readers are different, but he found that they do not…