Neurophysiological markers of early language acquisition: from syllables to sentences

Recently, there have been several reports of the neurophysiological correlates of language acquisition. These indicate that the infant's brain is able to discriminate different phonemes within the first 2 months of life, that knowledge about stress patterns and phonotactic rules is established between 5-12 months, and that phonotactic knowledge begins to interact with lexical-semantic processes between 12-14 months. Electrophysiological markers for lexical-semantic processes indicate that semantic processing of words in picture contexts is present at 14 months and for words in sentential contexts around 30 months. At 32 months, children demonstrate an adult-like electrophysiological response pattern to syntactic violations. The similarities between the brain response patterns observed in children and adults support the view that language develops in a continuous manner.     

Asymptotic identifiability of nonparametric item response models

The identifiability of item response models with nonparametrically specified item characteristic curves is considered. Strict identifiability is achieved, with a fixed latent trait distribution, when only a single set of item characteristic curves can possibly generate the manifest distribution of the item responses. When item characteristic curves belong to a very general class, this property cannot be achieved. However, for assessments with many items, it is shown that all models for the manifest distribution have item characteristic curves that are very near one another and pointwise differences between them converge to zero at all values of the latent trait as the number of items increases. An upper bound for the rate at which this convergence takes place is given. The main result provides theoretical support to the practice of nonparametric item response modeling, by showing that models for long assessments have the property of asymptotic identifiability. The research was partially supported by the National Institute of Health grant R01 CA81068-01.     

Random effects diagonal metric multidimensional scaling models

By assuming a distribution for the subject weights in a diagonal metric (INDSCAL) multidimensional scaling model, the subject weights become random effects. Including random effects in multidimensional scaling models offers several advantages over traditional diagonal metric models such as those fitted by the INDSCAL, ALSCAL, and other multidimensional scaling programs. Unlike traditional models, the number of parameters does not increase with the number of subjects, and, because the distribution of the subject weights is modeled, the construction of linear models of the subject weights and the testing of those models is immediate. Here we define a random effects diagonal metric multidimensional scaling model, give computational algorithms, describe our experiences with these algorithms, and provide an example illustrating the use of the model and algorithms.We would like to thank J. Douglas Carroll for early consultation of this research, and Robert I. Jennrich for commenting on an earlier draft of this paper and for help on the computational algorithms. James O. Ramsay and Forrest W. Young were instrumental in providing the example data. This work was supported in part by National Institute of Mental Health grant 1 R43 MH57559-01. We would also like to thank the anonymous referees for comments that helped to clarify our work.     

Temporal Parts and Bundle Theory

In this paper, I try to make a bundle theory of objects consistentwith a temporal parts theory of object persistence. To that end,I propose that such bundles are made up of tropes includingthe co-instantiation relation.     

An Examination of the Adlerian Construct of Social Interest With Criminal Offenders

The present study addressed the utility of the construct of social interest as related to the behaviors of criminal offenders. Social interest involves concern for others and optimism regarding one's view of the world. Offender scores on the Sulliman Scale of Social Interest (J. R. Sulliman, 1973) were examined along with demographic and criminal history predictors of parolee outcomes following release from a medium security correctional institution. The results indicated significant relationships between social interest scores and offender outcome as demonstrated by employment status, new felony arrests, and reincarceration status. The results have implications for those involved in predictive and rehabilitative efforts with criminal offenders.     

Inspection time and the relationship among elementary cognitive tasks, general intelligence, and specific cognitive abilities

The relationship between inspection time (IT) and paper-and-pencil tests of cognitive ability is well documented. However, the extent to which IT relates to cognitive ability through general intelligence or through group factors such as performance has not been fully addressed. Another unresolved issue is whether IT relates to psychometric intelligence independent from other elementary cognitive tasks. The current study examined these issues in a sample of 6–13-year-old twins drawn from the Western Reserve Twin Project (WRTP) (n=568 participants). Analyses suggest that IT and other elementary tasks predict general intelligence. IT also predicts Performance ability while other elementary tasks do not. Furthermore, IT contributes variance to cognitive ability independent from other elementary tasks. These suggest that multiple indices of elementary cognitive ability are necessary to fully understand their relationship with complex psychometric measures.     

The Scale for Assessing Emotional Disturbance: Concurrent Validity

The Scale for Assessing Emotional Disturbance (SAED) is a standardized, norm-referenced measure designed to operationalize the federal definition of Emotional Disturbance. It has demonstrated content validity and reliability. The two studies reported here address the SAED's concurrent validity. Samples in each study consisted of students identified with Emotional Disturbance. In both studies, special education teachers rated students on the SAED and a second measure of children's emotional and behavior problems. In the first study the SAED was compared to the Revised Behavior Problem Checklist. Correlations were generally moderate to high for similar subscales and low for dissimilar subscales. In the second study, the SAED was compared to the Teacher Report Form. Again, correlations generally were as expected and compatible with results of the first study. Results indicate that the SAED emotional and behavior problem subscales measure constructs akin to emotional and behavior problems measured by similar collections of item on the Revised Behavior Problem Checklist and Teacher Report Form. Implications of results and recommendations for use of the SAED are discussed.     

Between the Rock and a Hard Place: In Support of (something like) a Reformed View of the Eucharist

In this article, Calvin's eucharistic theology is re-read in the light of Aquinas, Augustine, Irenaeus, Luther, Jean-Luc Marion, Graham Ward and Catherine Pickstock. It is found to have great strengths, sucessfully avoiding both static ideas of Christ's presence and individual nominalism, while allowing a prominent place for the Holy Spirit and room for the believer's faith. Calvin took account of the doctrine of the Ascension quite differently from Luther by stressing Christ's bodily absence from this world. The article argues that this dialectic of presence and absence would gain from giving it a temporal dimension, giving more weight to eschatology.     

ANALYZING THE INFLUENCE OF TIC‐RELATED TALK ON VOCAL AND MOTOR TICS IN CHILDREN WITH TOURETTE'S SYNDROME

This study examined the effect of tic‐related talk on the vocal and motor tics of 2 boys with Tourette's syndrome. Using ABAB withdrawal designs, the boys were alternately exposed to conditions with and without talk of their tics. For both boys, vocal tics markedly increased when talk pertained to tics and decreased when talk did not pertain to tics, but motor tic covariance was less consistent.