A longitudinal assessment of the home literacy environment and early language

This longitudinal assessment concentrated on the relation between the home literacy environment (HLE) and early language acquisition during infancy and toddlerhood. In study 1, after controlling for socio‐economic status, a broadly defined HLE predicted language comprehension in 50 infants. In study 2, 27 children returned for further analyses. Findings revealed that the HLE measured in infancy predicted language production in toddlerhood and maternal redirecting behaviours measured in toddlerhood were negatively associated with expressive language. Results across both studies indicate the importance of a broadly defined HLE (including joint attention and parent–child conversation) for language development. Taken together, these findings highlight the importance of the HLE in supporting both receptive and expressive vocabulary growth in the second and third years of life. Copyright © 2011 John Wiley & Sons, Ltd.     

Contextual analysis of home environment factors influencing the acquisition of early reading skills in Zambian families

This study examined the effect of home environment factors in the acquisition of early reading skills (orthographic awareness and decoding competence). To assess these factors, a sample of seventy-two (72) first grade learners (females?=?55%; age range?=?7–8 years) and their maternal parents (age range 26–61 years old) from low SES in Zambia's capital city, Lusaka were recruited. Parents, in response to a home literacy questionnaire, reported on their attitudes towards reading, literacy teaching in the home, the home literacy environment, presence of reading materials for adults and children, parental education, occupation, family size and family possessions. Two measures of reading skill were administered at school. Correlations revealed that parental education, occupation and the size of the family were not significantly associated with the reading measures. Family possessions, parental reading attitudes, literacy activities, and reading materials significantly predicted orthographic awareness. In predicting decoding competence, only family possessions, parental reading attitudes and literacy activities were predictive. Regardless of the context, children experience literacy in varied forms and quantities.     

A comparative study of speech disfluencies in nonstuttering black and white college athletes

Speech samples elicited from nonstuttering black subjects and from nonstuttering white subjects were compared for degree and nature of disfluencies. Ninety-two male college athletes were screened in the areas of articulation, voice, fluency, and hearing. A 100-word conversational speech sample and a 200-word reading sample were elicited from subjects who passed the screening (28 black athletes and 29 white athletes). Both the spontaneous speech samples and the reading samples were rated for disfluency by three clinically certified speech-language pathologists. The black subjects exhibited significantly more total disfluencies in reading than did the white subjects; in terms of disfluency differences by type, the black subjects displayed significantly more word and phrase repititions. No significant differences were found between the subject groups for total disfluencies in conversation, although the white subjects did display significantly more hesitations. Grammatically, both subject groups were most disfluent on pronouns, nouns, adverbs, verbs, and adjectives, consistent with research findings on the loci of speech disfluencies.     

关于克里普克模态性的一个自然主义解释

The Kripkean metaphysical modality (i.e. possibility and necessity) is one of the most important concepts in contemporary analytic philosophy and is the basis of many metaphysical speculations. These metaphysical speculations frequently commit to entities that do not belong to this physical universe, such as merely possible entities, abstract entities, mental entities or qualities not realizable by the physical, which seems to contradict naturalism or physicalism. This paper proposes a naturalistic interpretation of the Kripkean modality, as a naturalist’s response to these metaphysical speculations. It will show that naturalism can accommodate the Kripkean metaphysical modality. In particular, it will show that naturalism can help to resolve the puzzles surrounding Kripke’s a posteriori necessary propositions and a priori contingent propositions. __________ Translated from Zhexue yanjiu 哲学研究 (Philosophical Researches), 2008, (1): 18–26     

Adult smoking in the home environment and children's IQ

In a sample of 3- and 5-yr.-old children, smoking in the home was found to be significantly and inversely related to IQ. Children of normal birth weight and without neurological impairment had been enrolled in a longitudinal study of child development. Analyses were conducted with sex, ethnicity, socioeconomic status, educational stimulation in the home, day care, and mother's intelligence controlled. Significant results were obtained for scores on the Peabody Picture Vocabulary Test-Revised at age three years and on the major Stanford-Binet Fourth Edition scales at ages three and five years. All effects were for the mother, not the father, smoking in the home.     

Accurate referential communication and its relation with private and social speech in a naturalistic context

Research into human communication has been grouped under two traditions: referential and sociolinguistic. The study of a communication behavior simultaneously from both paradigms appears to be absent. Basically, this paper analyzes the use of private and social speech, through both a referential task (Word Pairs) and a naturalistic dyadic setting (Lego-set) administered to a sample of 64 children from grades 3 and 5. All children, of 8 and 10 years of age, used speech that was not adapted to the decoder, and thus ineffective for interpersonal communication, in both referential and sociolinguistic communication. Pairs of high-skill referential encoders used significantly more task-relevant social speech, that is, cognitively more complex, than did low-skill dyads in the naturalistic context. High-skill referential encoder dyads showed a trend to produce more inaudible private speech than did low-skill ones during spontaneous communication. Gender did not affect the results.     

The evolution of speech: a comparative review

The evolution of speech can be studied independently of the evolution of language, with the advantage that most aspects of speech acoustics, physiology and neural control are shared with animals, and thus open to empirical investigation. At least two changes were necessary prerequisites for modern human speech abilities: (1) modification of vocal tract morphology, and (2) development of vocal imitative ability. Despite an extensive literature, attempts to pinpoint the timing of these changes using fossil data have proven inconclusive. However, recent comparative data from nonhuman primates have shed light on the ancestral use of formants (a crucial cue in human speech) to identify individuals and gauge body size. Second, comparative analysis of the diverse vertebrates that have evolved vocal imitation (humans, cetaceans, seals and birds) provides several distinct, testable hypotheses about the adaptive function of vocal mimicry. These developments suggest that, for understanding the evolution of speech, comparative analysis of living species provides a viable alternative to fossil data. However, the neural basis for vocal mimicry and for mimesis in general remains unknown.     

A construction based analysis of child directed speech

The child directed speech of twelve English‐speaking motherswas analyzed in terms of utterance‐level constructions. First, the mothers' utterances were categorized in terms of general constructional categories such as Wh‐questions, copulas and transitives. Second, mothers' utterances within these categories were further specified in terms of the initial words that framed the utterance, item‐based phrases such as Are you …, I'll …, It's …, Let's …, What did … The findings were: (i) overall, only about 15% of all maternal utterances had SVO form (most were questions, imperatives, copulas, and fragments); (ii) 51% of all maternal utterances began with one of 52 item‐based phrases, mostly consisting of two words or morphemes (45% began with one of just 17 words); and (iii) children used many of these same item‐based phrases, in some cases at a rate that correlated highly with their own mother's frequency of use. We suggest that analyses of adult–child linguistic interaction should take into account not just general constructional categories, but also the item‐based constructions that adults and children use and the frequency with which they use them.     

Quality of the home,daycare and neighborhood environment and the cognitive development of economically disadvantaged children in early childhood: A mediation analysis

The objective of this study was to investigate how socioeconomic factors and the quality of ecological environments affect motor and cognitive development of economically disadvantaged children. This is a cross-sectional, predictive and correlational study using structural equation modeling to analyze data on 147 economic disadvantage children of 24–36 months attending public daycare. The Bayley-III Scales, the Home Observation for Measurement of the Environment Inventory, the Infant/Toddler Environment Rating Scale-Revised Edition, a socioeconomic index and a specifically designed questionnaire on neighborhood quality were applied. The ecological environments did not affect motor development, but 25 % of variations in cognitive development were explained by socioeconomic differences and differences in the quality of the neighborhood, home and daycare. However, only the quality of the home and daycare had a direct impact, with the other factors affecting the outcome indirectly and to a lesser extent. In conclusion, this study investigated the association between the ecological contexts of economically disadvantaged children and their cognitive and motor development. The findings showed that the environmental context had effect on cognitive development. The home was the environment that exerted the most significant direct effect, followed by daycare and, indirectly and to a lesser extent, the neighborhood. Therefore, the coordination of public policies between health, education and social assistance sectors, aiming at the three ecological environments is important in order to promote the cognitive development of economically disadvantaged children.     

Autonomy support and control within mother-father parenting structures: A person-centered approach in youth sport

In the youth sport context, parents play an important role in the motivation of adolescent athletes. From a self-determination theory viewpoint, the provision of autonomy support versus control by parents is an essential part of this socialization process. The purpose of the present study was threefold: (a) identify distinct mother-father parenting profiles of autonomy support and control based on perceptions of adolescent athletes, (b) examine the unique influence of mother-father parenting profiles on adolescent athletes' motivational responses (i.e., parent-to-child effects), and (c) understand the contribution of adolescent athletes' motivation to the emergence of these mother-father parenting profiles (i.e., child-to-parent effects). To test our hypotheses, a person-centered approach (latent profile analysis) was employed to analyze data collected from a sample of high school athletes (N = 264; Mage = 15.7 years, 64% female). Results provided evidence supporting a four-profile solution: Strong Autonomy Support Dominant: Both Parents (n = 26, 9.8%), Weak Control Dominant: Both Parents (n = 111, 42.0%), Moderate Autonomy Support and Control: Both Parents (n = 21, 8.0%), and Weak Autonomy Support Dominant: Both Parents (n = 106, 40.2%). The four mother-father parenting profiles were found to be differentially predicted by, and predictive of, adolescent athletes' adaptive and maladaptive motivational responses (i.e., basic psychological needs satisfaction, autonomous and controlled motivation). This study illuminated a general pattern of congruency in the provision of autonomy support and control by parents within mother-father parenting structures and contributed empirical evidence pointing to the reciprocal nature of interpersonal processes in parent-athlete relationships.