The role of comprehension in children's observational learning of a syntactic rule

This experiment tested the hypothesis that there is a relationship between children's comprehension of a syntactic form and the effectiveness of modeling in promoting imitation of that form. Nursery and kindergarten children received pretests for both comprehension and production of reversible passive sentences. Children who produced no passive sentences were classified either as high, intermediate, or low comprehenders on the basis of their comprehension test performance. Within each of these three groups, children were randomly assigned either to a modeling or to a no-modeling control condition. Children in the treatment condition heard a model use passive sentences to describe a series of pictures. As predicted, the imitation post-test scores of these children were significantly related to their comprehension pretest scores. No significant relationship between the post-test scores and the comprehension scores of control subjects was detected. Children exposed to the model in all three comprehension groups received significantly higher post-test scores than did their respective counterparts in the no-modeling condition. These results are discussed in terms of the hypothesis that language learning proceeds from comprehension to imitation to production.     

Locus of control and causal attribution for positive and negative outcomes on university examinations

One-hundred-five internal and external locus of control subjects attributed responsibility for their positive and negative outcomes on a university examination. Internal and positive outcome subjects attributed responsibility to internal causal factors while external and negative outcome subjects were more external in their causal attributions. Overall ratings of the four causal components ability, effort, task, and luck were not always in accord with the Weiner model two-dimensional classification.     

Symptomatic cluttering in adults.

Two patients with symptomatic cluttering due to acquired neurological disease are described. One patient suffered a brainstem infarct (stroke), and the other appeared to have a typical clinical picture of multiple sclerosis. Linguistic analysis of the two patients is provided along with a comparison of idiopathic cluttering of childhood. The implications of cluttering as an acquired speech disorder are discussed.     

Cognitive abilities of street children: Low-SES Bolivian boys with and without experience of living in the street

Objectives: This study compared results on cognitive tests measuring nonverbal visualization and reasoning, executive functions, and creativity between 36 boys with experience of living in the street and 31 housed yet socioeconomically equivalent boys, in Bolivia.

Results: The street children scored significantly higher on the creativity measure, which is discussed in relation to contextual relevance. No significant differences were found on the other cognitive tests. Time elapsed after living in the street and drug use were strongly associated with cognition, while age was not. Both groups scored below average compared to Western norms. The results are discussed in terms of the cultural relevance of the tests and the impact of socioeconomic status, stress, and stimulation on cognition.     

Does rationality presuppose irrationality

Abstract

Although irrationality always presupposes rationality, I think there are good arguments to claim that sometimes rationality presupposes irrationality.This paper tries to show how irrational action can support rationality in two ways: it can develop and preserve rationality. I also argue that sometimes the development and the conservation of rationality can only be realized by irrational action.     

Case report of stuttering acquired in association with phenytoin use for post-head-injury seizures

Previous research indicates that stuttering and deficits in motor performance may be associated with the use of phenytoin (Dilantin). The present report concerns a case of stuttering acquired in association with phenytoin use for post-head-injury seizures. The extent and nature of dysfluencies and the motor performance of speech and nonspeech muscle systems were evaluated over an extended period during which changes in anticonvulsant medication were made. Reductions in dysfluency levels and improved motor performance were observed following a medication change from phenytoin to carbamazepine. Performance on tests assessing nonmotor functions, such as memory and attention, was equivalent before and after the medication change. The apparent association between dysfluency levels, motor performance deficits, and phenytoin suggest that in the present case stuttering resulted in part from a general impairment in motor control.     

A test of the distraction explanation of disfluency modification in stuttering

The distraction explanation of changes in stuttering rate was examined in the present experiment. Twelve stutterers were compared with 12 nonstutterers who were matched for age, sex, and level of education. Subjects were tested for disfluency production under conditions designed to reflect the dimension of distraction. These conditions were: (a) over attention to speech (counting speaking errors). (b) “normal” conditions (no additional task), and (c) distraction (pursuit tracking of an irregular target). The results showed no effect on stuttering rate that could be attributed to the distraction conditions. However, stutterers rated the difficulty of these conditions in concordance with the distraction theory. It was suggested that, while stutterers' perceptions may account for the popularity of the distraction explanation, evidence supporting the theory is lacking.