新疆西准噶尔地区塔斯特岩体锆石LA-ICPMS年龄及其意义

西准噶尔萨吾尔地区地处新疆阿勒泰地区吉木乃县及塔城地区和丰县。酸性侵入岩在区内较发育，其研究对于准噶尔地区后碰撞构造一岩浆演化时限的厘定具有重要的意义。塔斯特岩体是萨吾尔地区重要的复式花岗岩体，与区内铜、金矿化关系密切。塔斯特岩体锆石LA-ICPMS年龄为337±4Ma（1δ），形成于早石炭世。结合已有的地球化学特征研究，这一年龄显示西准噶尔地区在早石炭世已处于后碰撞环境。本文获得的塔斯特岩体成岩年龄是目前在准噶尔地区获得的最老的后碰撞花岗岩锆石U-Pb年龄之一，为准噶尔地区后碰撞构造-岩浆演化时限的厘定提供了新的证据。     

Factors influencing the incidence of utilization deficiencies and other patterns of recall/strategy-use relations in a strategic memory task

Factors that influence the incidence of utilization deficiencies and other recall/strategy-use patterns on a strategic memory task were evaluated in two hundred and fourteen 7- and 9-year-old children. Both utilization deficiencies and the incidence of children showing increases in both recall and strategy use over phases were more likely to be observed on phase transitions involving prompting or when different lists of items were included on consecutive trials; in contrast, increases in recall in the absence of increases in strategy use were more likely to be found between trials consisting of the same stimulus items. This research clearly indicates that patterns of recall/strategy-use relations, including utilization deficiencies, vary meaningfully with the age of the child and a variety of contextual factors.     

Multigenerational perceptions of mental health services among deaf adults in Florida

The objective of the study was to better understand the perceptions and needs of multigenerational Deaf adults related to mental health services. A survey sampled participants who were between 20 and 85 years old and Deaf. Questions were developed to identify the perspectives of Deaf adults related to the availability of mental health services, preferences for these services, and current utilization of services. Participants were grouped into age (years) categories: young adult (18-34), middle adult (35-54), older adult (55-65), and oldest (66-). Category response trends were examined using chi-square analysis. The analysis showed significant differences in the preferences and utilization of mental health care. These data also suggested preferences for service delivery. These data indicate areas of importance related to the development of programs and services for Deaf adults and to indicate where funding for services would be best utilized.     

Developing mathematical proficiency in the Australian context: implications for students with learning difficulties

The teaching of mathematics in Australian schools has received considerable attention over the past decade. States and territories have designed and implemented new mathematics syllabi, and education sectors have supported teachers through sustained professional learning initiatives. Whereas the major focus of these initiatives has been on students constructing mathematical knowledge from a range of learning activities and quality instruction, the education of students with difficulties in learning mathematics has been given little direct attention. This analysis of current syllabus developments and professional learning initiatives highlights the risk of exposing students with learning difficulties to fragile program designs and classroom instruction. The research literature is also examined to propose ways in which these fragilities can be addressed.     

Teachers' in-flight thinking in inclusive classrooms

This article explores the thinking of five junior high school teachers as they teach students with learning difficulties in inclusive classrooms. Insights into the ways these teachers think about students in these inclusive secondary school contexts were obtained through triangulating data from semistructured interviews, stimulated recall of in-flight thinking, and researcher field notes. Exploration of teachers' in-flight thinking (i.e., the thinking of teachers as they engaged in classroom teaching) revealed a knowledge of individual students that was not related to categorical notions of learning difficulties. This research has implications for the practice of teaching in inclusive settings as well as for teacher preparation. Specifically, it suggests that attention to student differences should be replaced by the development of teachers' knowledge about individual students as a rich source of practical knowledge and the basis for developing effective instructional techniques.     

Cognitive processes associated with child neglect

OBJECTIVE: To compare neglectful and non-neglectful mothers on information processing tasks related to child emotions, behaviors, the caregiving relationship, and recall of child-related information. METHOD: A natural group design was used. Neglectful mothers (N=34) were chosen from active, chronic caseloads; non-neglectful comparison mothers (N=33) were obtained from community agencies serving families. Participants were administered the IFEEL Picture task to assess maternal perceptions of infant emotions, eight vignettes of young children's behavior to assess attributions for child behavior across different scenarios, and a passage recall task to assess information processing problems. A measure of depression was used as a covariate to control for this variable. RESULTS: Neglectful mothers were significantly less likely to recognize infants' feelings of interest, more likely to see sadness and shame, more inaccurate at labeling infants' emotions, and had a more limited emotion vocabulary. They also made more internal and stable attributions for children's behaviors in situations where it was not clear whether a child was at risk of harm, and had poor recall of information. Depressive symptoms had little effect on these findings with the exception of information recall. CONCLUSIONS: Neglectful mothers show significant problems in information processing concerning their child's emotions and behaviors, which may affect their childrearing behavior. Cognitive-behavioral interventions to improve parents' abilities to recognize their child's emotions and to address maladaptive attributions may be of value.     

Phonological processing and emergent literacy in younger and older preschool children

Phonological awareness, phonological memory, and phonological access to lexical storage play important roles in acquiring literacy. We examined the convergent, discriminant, and predictive validity of these phonological processing abilities (PPA) in 389 3-, 4-, and 5-year-old children. Confirmatory factor analysis supported the validity of each PPA as separate from general cognitive ability and separate from each other. Multigroup structural equation modeling (SEM) with mean structure demonstrated that older preschoolers have better developed latent PPA than younger preschoolers but that the structure of PPA is equivalent. RAN was found uniquely associated with letter knowledge and text discrimination in younger preschoolers, and PA was found uniquely associated with word reading skills in older preschoolers. Finally, general cognitive ability was only indirectly associated with emergent literacy via PPA. These results highlight the importance of PPA in the early literacy development of English-speaking preschool children.     

Child forensic interviewing in Children's Advocacy Centers: empirical data on a practice model

OBJECTIVE: Children's Advocacy Centers (CACs) aim to improve child forensic interviewing following allegations of child abuse by coordinating multiple investigations, providing child-friendly interviewing locations, and limiting redundant interviewing. This analysis presents one of the first rigorous evaluations of CACs' implementation of these methods. METHODS: This analysis is part of a quasi-experimental study, the Multi-Site Evaluation of Children's Advocacy Centers, which evaluated four CACs relative to within-state non-CAC comparison communities. Case abstractors collected data on investigation methods in 1,069 child sexual abuse cases with forensic interviews by reviewing case records from multiple agencies. RESULTS: CAC cases were more likely than comparison cases to feature police involvement in CPS cases (41% vs. 15%), multidisciplinary team (MDT) interviews (28% vs. 6%), case reviews (56% vs. 7%), joint police/child protective services (CPS) investigations (81% vs. 52%) and video/audiotaping of interviews (52% vs. 17%, all these comparisons p<.001). CACs varied in which coordination methods they used, and some comparison communities also used certain coordination methods more than the CAC with which they were paired. Eighty-five percent of CAC interviews took place in child-friendly CAC facilities, while notable proportions of comparison interviews took place at CPS offices (22%), police facilities (18%), home (16%), or school (19%). Ninety-five percent of children had no more than two forensic interviews, and CAC and comparison differences on number of interviews were mostly non-significant. CONCLUSIONS: Relative to the comparison communities, these CACs appear to have increased coordination on investigations and child forensic interviewing. The CAC setting was the location for the vast majority of CAC child interviews, while comparison communities often used settings that many consider undesirable. CACs showed no advantage on reducing the number of forensic interviews, which was consistently small across the sample.     

An Entity Theory of Intelligence Predicts Higher Cortisol Levels When High School Grades Are Declining

Grades often decline during the high school transition, creating stress. The present research integrates the biopsychosocial model of challenge and threat with the implicit theories model to understand who shows maladaptive stress responses. A diary study measured declines in grades in the first few months of high school: salivary cortisol (N = 360 students, N = 3,045 observations) and daily stress appraisals (N = 499 students, N = 3,854 observations). Students who reported an entity theory of intelligence (i.e., the belief that intelligence is fixed) showed higher cortisol when grades were declining. Moreover, daily academic stressors showed a different lingering effect on the next day's cortisol for those with different implicit theories. Findings support a process model through which beliefs affect biological stress responses during difficult adolescent transitions.