This article explores selected phonological measures, their relationships to one another, and how groups differentiated by such measures change over time during intervention. Relationships among global quantitative measures of severity (percent consonants correct), measures of variability/consistency, and measures of whole-word complexity and…

The approximate degrees of freedom Welch-James (WJ) and Brown-Forsythe (BF) procedures for testing within-subjects effects in multivariate groups by trials repeated measures designs were investigated under departures from covariance homogeneity and normality. Empirical Type I error and power rates were obtained for least-squares estimators and…

Purpose: This study was conducted to examine whether the expressive language characteristics of typically developing (TD) children learning English as a second language (ESL) have similarities to the characteristics of the English that is spoken by monolingual children with specific language impairment (SLI), and whether this could result in the…

Using Kazemi's and Stipek's (2001) framework of classroom practice, the discourse between students enrolled in a mathematics-for-teachers course and their instructor is examined. The teacher's practice is in transition from a focus on having students share multiple strategies toward a practice that additionally includes the mathematical…

Eight independent variables (differential item functioning [DIF] detection method, purification procedure, item response model, mean latent trait difference between groups, test length, DIF pattern, magnitude of DIF, and percentage of DIF items) were manipulated, and two dependent variables (Type I error and power) were assessed through…

Prior research (DeLoache, Uttal & Rosengren, 2004) has documented that 18- to 30-month-olds occasionally make scale errors: they attempt to fit their bodies into or onto miniature objects (e.g. a chair) that are far too small for them. The current study explores whether scale errors are limited to actions that directly involve the child's…

Overgeneralization occurs when a child uses the wrong word to name an object and is often observed in the early stages of word learning. We develop a method to elicit overgeneralizations in the laboratory by priming children to say the names of objects perceptually similar to known and unknown target objects. Experiment 1 examined 18 two-year-old…

Most of the spelling error analysis has been conducted in Latin orthographies and rarely conducted in other orthographies like Arabic. Two hundred and eighty-eight students in grades 1-9 participated in the study. They were presented nine lists of words to test their spelling skills. Their spelling errors were analyzed by error categories. The…

The empirical performance of the technique proposed by P. O. Johnson and J. Neyman (1936) (the JN technique) and the modification of R. F. Potthoff (1964) was studied in simulated data settings. The robustness of the two JN techniques was investigated with respect to their ability to control Type I and Type III errors. Factors manipulated in the…

It is commonly believed that the quality of original cataloging on OCLC (Online Computer Library Center) and RLIN (Research Libraries Information Network) significantly differs. Past stereotypes reflected the fact that OCLC traditionally emphasized increasing the size of the database, while RLIN ascribed top priority to cataloging quality. The…

A certain group of English verbs, the ergatives, is consistently mis-passivized in Chinese-speakers' interlanguage. Comparison of the ergative construction in Chinese and English shows that they share similar properties. However, this does not seem to facilitate learning of the target English construction. Furthermore, the passive ergatives are…

A study investigated patterns of usage of French connectors (e.g., "alors,""mais,""puisque") among Chinese university students of French as a foreign language. The study arose from concern that the lack of connector usage contributed to a lack of coherence in the students' oral and written language. Subjects were 45…

Appropriateness measurement is a general approach to the problem caused by multiple choice tests failing to measure accurately the ability of atypical examinees. The conceptual framework of appropriateness measurement is presented, and several statistical indices of the appropriateness of a multiple choice test for an examinee are noted. A series…

This report examines the features and performance of the BUG-FINDing component of MENO-II, a computer-based tutor for beginning PASCAL programming students. A discussion of the use of artificial intelligence techniques is followed by a summary of the system status and objectives. The two main components of MENO-II are described, beginning with the…

This report reviews the impact of the categorical eligibility provision of the Food Security Act of 1985 (FSA) on the program participation, administrative costs, and error rates of the Food Stamp Program (FSP). The Act automatically granted eligibility for the FSP to households composed entirely of participants in the Aid to Families with…