In 1999 Stephen Gorard published an article in this journal in which he provided a trenchant critique of what he termed the "politician's error" in analyzing differences in educational attainment. The main consequence of this error, his argument, has been the production of misleading findings in relation to trends in educational performance over…

Six results are reported. (a) Reaching accuracy increases when visual capture of the target is allowed (e.g., target on vs. target off at saccade onset). (b) Whatever the visual condition, trajectories diverge only after peak acceleration, suggesting that accuracy is improved through feedback mechanisms. (c) Feedback corrections are smoothly…

When preschoolers overcome persistent error, subsequent patterns of correct choices may identify how the error had been overcome. Children who no longer misrepresented a ball rolling down a bent tube as though it could only fall vertically, were asked sometimes to approach and sometimes to avoid where the ball landed. All children showed requisite…

Extensive research has been conducted about feedback on writing in both L1 and L2 classrooms. Although much of the research suggests that correcting grammar does not help students make long-term improvements, many teachers continue to believe that they must correct all errors. In addition, students report that they want teachers to mark errors.…

The hypothesis is introduced that 1 source of shift costs is the strengthening of task-related associations occurring whenever an overt response is produced. The authors tested this account by examining shift effects following errors and error compensation processes. The authors predicted that following a specific type of error, called task…

The application range of Cohen's Kappa is extended to the field of sequential observation data, where omission mistakes of an observer may often occur. It is shown how the omission mistakes can be incorporated into the calculation of the Kappa coefficient without violating the statistic it is based on. The enhanced coefficient is termed Kappa…

The present study, using a single subject adapted alternating treatments design, compared the effects of two spelling strategies (cover, copy, compare, and copy-only) used to enhance spelling performance in 2, third-grade students with learning disabilities. The cover, copy compare (CCC) method required the students to say the word, point to the…

Free, open, online homework help sites appear to be extremely popular and exist for many school subjects. Students can anonymously post problems at their convenience and receive responses from forum members. This mode of tutoring may be especially critical for school subjects such as calculus that are intrinsically challenging and have high…

The effectiveness and efficiency of two error correction procedures on word reading were compared. Three students with below average reading skills and one student with average reading skills were provided with weekly instruction on sets of 20 unknown words. Students' errors during instruction were followed by either word supply error correction…

Business professionals and instructors often view writing skills as one of the most important qualifications that employees should possess. However, many business employees, including recent college graduates, have serious writing deficiencies, especially in their ability to use standard English. As a result, American businesses spend billions of…

To commemorate the 30th anniversary of the publication of Mina Shaughnessy's groundbreaking book, "Errors and Expectations," a roundtable discussion was held at the March 2007 Conference on College Composition and Communication in New York City. This article, based on the earlier discussion, examines the question of CUNY's multiple…

In this study the authors investigated the use of 5 (i.e., Claudy, Ezekiel, Olkin-Pratt, Pratt, and Smith) R[squared] correction formulas with the Pearson r[squared]. The authors estimated adjustment bias and precision under 6 x 3 x 6 conditions (i.e., population [rho] values of 0.0, 0.1, 0.3, 0.5, 0.7, and 0.9; population shapes normal, skewness…

The purposes of this study were to explore the effects and the validity of on-line peer assessment in high schools and to analyze effects of various types of peer feedback on students. The participating students, a total of 184 10th graders, developed their individual course projects by involving the on-line peer assessment learning activities in…

Previous work in the literature reveals that EFL learners were deficient in collocations that are a hallmark of near native fluency in learner's writing. Among different types of collocations, the verb-noun (V-N) one was found to be particularly difficult to master, and learners' first language was also found to heavily influence their collocation…

The study investigates the effect of explicit contrastive analysis and translation activities on the incidental acquisition of single words and collocations. We compared three high school groups of learners of the same L1 and comparable L2 (English) proficiency. Each group represented one instructional condition: meaning focused instruction (MFI),…