Modeling student knowledge is a fundamental task of an intelligent tutoring system. A popular approach for modeling the acquisition of knowledge is Bayesian Knowledge Tracing (BKT). Various extensions to the original BKT model have been proposed, among them two novel models that unify BKT and Item Response Theory (IRT). Latent Factor Knowledge…

In online educational systems we can easily collect and analyze extensive data about student learning. Current practice, however, focuses only on some aspects of these data, particularly on correctness of students answers. When a student answers incorrectly, the submitted wrong answer can give us valuable information. We provide an overview of…

This study compared the comprehension monitoring skills of learning disabled (LD) and normal elementary school children. Comprehension monitoring, the ability to evaluate one's level of understanding of incoming messages, was assessed using two separate tasks. In the first (referential task), the child took the role of the listener in a…

Two experiments investigated the effectiveness of reading backwards as a proofreading technique. Experiment 1 examined the general usefulness of backwards vs. forwards proofreading strategies and the effects of these strategies for two types of typographical errors: misspellings and contextual errors. Subjects, 36 undergraduate students at a…

A review of the relevant literature reveals that reading reversals, whether in sequence or orientation, comprise a very small proportion of the total errors made by even poor readers. Young children tend to make more reversals, yet this tendency generally disappears with age. Top-down theorists feel that the reversal tendency of young children is…

This paper examines the tacit assumptions behind different theories about the nature of language and aphasia, and it discusses critically the use of structural and generative linguistic theories to explain the behavior of aphasics, especially with regard to the difference between spoken and written discourse. It is proposed that, rather than try…

Writing samples of 97 students in remedial writing classes were analyzed to determine error patterns in writing mechanics and the predominance of specific errors. Students were grouped according to individual student profiles and error patterns which indicated additional similarities and differences among individuals. Analysis indicated that most…

Noting that while the number of errors gives a general indication of spelling ability, it may represent an oversimplification of the spelling process, a study examined the spelling ability of 40 Canadian third grade students of average ability. Subjects were divided into low and high spelling ability groups on the basis of the Edmonton (Alberta)…

A study investigated whether children expect color similarity to be less important than form similarity in object label extensions. Twenty 2-year-olds and 20 3-year-olds were asked to sort objects similar in either color or form in two different situations: (1) the "No Label" condition where children were asked to help the puppet put objects that…

This study analyzed informal Finnish compositions written by the first pupils in Vaasa (Finland) who were taught Swedish by immersion method and the compositions of their parallel class. Compositions in the fourth and fifth forms were compared. The immersion pupils were taught mostly in Swedish, while their peers in the parallel group were taught…

This study analyzed the pronunciation of English interdental fricatives by two native speakers of Turkish, focusing on whether there was systematic variation of forms according to the kind of discourse and the surrounding phonemes. Subjects were two adult Turkish learners of English as a Second Language, both of whom had been in the United States…

A study investigated the role of pragmatics, the factors that govern choice of language in social interaction, on interpretation of elliptical verb phrases (VPs) in spoken English by learners of English as a Second Language (ESL). Ellipsis requires the listener to recall the surface form of a presupposed element and to integrate it into the…

A study examined the phoneme-grapheme correspondence in native English-speaking kindergartners' spelling and compared it to the results of similar research with Spanish-speaking children. It tested the hypothesis that English-speaking children make their first grapheme-sound correspondences differently because of phonological differences in the…

This study investigated the relative ability of literate (n=24), semi-literate (n=45), and non-literate (n=21) adults to erase the initial consonant or vowel from non-words and pronounce the remaining phonemes. It was hypothesized that difficulty in removing the initial consonant from the vowel with which it coarticulates is due not only to…

This study explores how children indicate that a new character or object is being introduced into a written text and how they tell their readers that a particular word refers to something which has appeared in the text before. In particular, the study focuses on information represented by noun phrases in written narrative texts. To investigate how…