Evaluates arguments advanced in favor of special nativism in second-language acquisition (SLA). The article considers the following claims: Universal Grammar (UG) is the null hypothesis; any theory of SLA needs a theory of grammar; and showing that interlanguage grammars are underdetermined by the available input implies that UG must be accessible…

This article first outlines the logic of null hypothesis testing and the problems of using it to evaluate special education research. It then presents three alternative metrics, a binomial effect size display, a relative risk ratio, and an odds ratio, that can better identify important treatment effects using illustrative data from recently…

Examines the nature of observational science and cites its role as a foundation for subsequent scientific research. Uses a case history to illustrate the interplay of observation, problem recognition, and hypothesis testing. (DDR)

Observed a high rate of congruence between a hypothesized theoretical model of cognitive, motivational, and volitional dimensions of learning and empirical data from 614 college students. Analysis of effects between the model variables reveals some interesting effects with implications for student academic achievement. (SLD)

Investigates the extent to which a representation of relative force can account for children's understanding of epistemic modals when their logical meaning is considered. Results confirm the influence of relative force and suggest that deductive inference is an early semantic component of modal terms. (29 references) (Author/CK)

Describes English-speaking children's acquisition of voice onset time. The study evaluated two hypotheses, one predicting that children would control the vowel duration contrast earlier than the consonantal one and one predicting that they would control the contrast represented on the segmental level of linguistic description earlier than the…

Presents results of a response latency (RL) experiment with English-speaking learners of German that investigated to what extent if any two different groups of second language learners permit raising of the thematic verb. Results show that learners respond in different ways to stimulus sentences with raised and unraised verbs depending on the…

Explored issue of confirmatory bias in counselors' clinical hypothesis testing by examining the way counselors (n=84) remembered information about a client. Results indicated counselors remembered more confirmatory than discomfirmatory information. Suggests counselors need to be aware of these biases and should be trained to avoid them.…

The primary language hypothesis of short-term memory coding was challenged by an experiment with eight normally hearing college students and a review of the literature about deaf subjects. Whether or not deaf signers recode printed words into sign depends on a variety of task and subject factors. (SLD)

A strategy for evaluating/modifying covariance structure models (CSMs) is presented. The approach uses recent developments in estimation under nonstandard conditions and unified asymptotic theory related to hypothesis testing, and it determines the extent of sample size sensitivity and specification error effects by relying on existing statistical…

A wide variety of studies have offered glimpses of how learners put their second-language knowledge and skills to use during communication. It is shown that the same empirical findings can lead to very different conclusions. (49 references) (GLR)

Reports results of a study which analyzed course syllabi at a liberal arts college and a university with graduate and professional programs to determine the type and quantity of library use required. Data are presented on percentage of courses requiring library use by department, overall use patterns, and use patterns by course level. (12…

The empirical performance under null/alternative hypotheses of the likelihood ratio difference test (LRDT); Lagrange Multiplier test (evaluating the impact of model modification with a specific model); and Wald test (using a general model) were compared. The new tests for covariance structure analysis performed as well as did the LRDT. (RLC)

Mothers' and teachers' ratings showed that children of in-remission and in-episode mothers manifested significantly higher levels of behavior problems than children of control mothers. Agreement between mothers and teachers was moderate for all groups. (RH)

This response to Brainerd and Reyna's paper (in this issue) argues that the common resources hypothesis can be applied to a wider range of phenomena than can the output-interference hypothesis. Presents results of a dual-task experiment under bidirectional deficits. Concludes that dual-task studies do not provide critical tests of the resources…