From Syllables to Syntax: Multilevel Statistical Learning by 12‐Month‐Old Infants

To successfully acquire language, infants must be able to track multiple levels of regularities in the input. In many cases, regularities only emerge after some learning has already occurred. For example, the grammatical relationships between words are only evident once the words have been segmented from continuous speech. To ask whether infants can engage in this type of learning process, 12‐month‐old infants in 2 experiments were familiarized with multiword utterances synthesized as continuous speech. The words in the utterances were ordered based on a simple finite‐state grammar. Following exposure, infants were tested on novel grammatical and ungrammatical sentences. The results indicate that the infants were able to perform 2 statistical learning tasks in sequence: first segmenting the words from continuous speech, and subsequently discovering the permissible orderings of the words. Given a single set of input, infants were able to acquire multiple levels of structure, suggesting that multiple levels of representation (initially syllable‐level combinations, subsequently word‐level combinations) can emerge during the course of learning.     

Cross-validation methods in principal component analysis: A comparison

In principal component analysis (PCA), it is crucial to know how many principal components (PCs) should be retained in order to account for most of the data variability. A class of “objective” rules for finding this quantity is the class of cross-validation (CV) methods. In this work we compare three CV techniques showing how the performance of these methods depends on the covariance matrix structure. Finally we propose a rule for the choice of the “best” CV method and give an application to real data.     

Management,Competition and Professional Practice: Medicine and the Marketplace

Within the context of the creation of the internal market for health care, the paper examines the role of clinical directors, that is doctors who have retained their professional clinical positions whilst at the same time assumed roles as managers within increasingly well-defined corporate organizations providing health care. This represents considerable change from previous contexts in which doctors could always contract out of difficult managerial decisions. The role of clinical director is examined in terms of its own directorate and its involvement in contracting, co-operation and competition both within its own corporate organization and within the wider market place for health. Key issues are raised for the individuals and organization by these changes, they are discussed in terms of time, succession, managing colleagues, financial and human resources, market behaviour, support and terms of reference. These changes occasion wider discussion in terms of the challenge of coping with future demands for innovation, changes in the distribution of power within an emerging market for health care and the relationship among health care organizations, professionals and lay clients.     

Lexical struggle in court: Aboriginal Australians versus the state1

This paper presents a critical sociolinguistic exploration of the cross‐examination of three young teenage Australian Aboriginal boys in a Queensland court. The boys alleged that they had been abducted by six police officers, so they were prosecution witnesses in the case against the police officers. The paper examines the lexical strategies used by defence counsel to construct these victim‐witnesses as criminals with ‘no regard for the community’, and to reinterpret the alleged abduction as a consensual car ride. Of greatest concern is the strategy which I term ‘lexical perversion’– the rejection of a witness's labelling of their own experience, through overt correction with, or covert substitution of, another lexical item. These lexical strategies are central to the judicial legitimation of neocolonial control by the police over the movements of Aboriginal young people.     

The influence of family environment on mental health need and service use among vulnerable children

Children in child welfare are especially likely to have unmet mental health needs. The role of family factors in children's use of mental health services was examined in a longitudinal sample of 1075 maltreated or at-risk children. Vulnerable family environment (poor family functioning, low social support, and caregiver psychological distress) is an important predictor of children's mental health needs. It also predicts them not having these needs met.     

Connections between Temperament and Social Development: A Review

This paper critically reviews the literature on the links between temperament and social development in children and adolescents. Social development is broadly defined to include externalizing and internalizing behaviour problems, prosocial behaviour and social competence. It concludes that there are clear links between specific dimensions of temperament and particular aspects of social development. Examples include the association of negative reactivity with externalizing behaviour problems, inhibition with internalizing behaviour problems, and attention regulation with school functioning. Theoretical and methodological issues to be confronted in future research are identified, including the need to investigate further the interactions between temperament and social context. Analysis of patterns of change in temperament, in relation to physiological changes and to such factors as parenting and socio‐cultural expectations of children, promise to refine our understanding of how temperament works in context. Some practical implications which can be drawn from the research are also discussed.     

Peer Support Groups for Child Welfare–Involved Families

Studies on risk factors and circumstances related to child maltreatment have continuously emphasized the important role of social support. As a result, peer support groups have been gaining attention and recognition in recent years in the field of child maltreatment prevention. However, little is known about the benefits that child welfare–involved parents receive in peer support groups, as well as the distinctive service elements that make these groups successful. By examining child welfare–involved parents’ experiences participating in peer support groups, this study provided a better understanding of the perceived beneficial aspects of peer support groups, specific types of supports offered to and by peers, and unique characteristics of these groups.     

Knowledge Regarding Hymens and the Sex Education of Parents

The objective of this study was to ascertain beliefs and knowledge of pediatricians and parents regarding the hymen and to evaluate parental and pediatrician attitudes regarding sex education by pediatricians. Surveys were distributed anonymously to parents and pediatricians. Survey questions included knowledge of the female hymen and questions regarding attitudes toward sexual health education. There was a statistically significant difference in mean knowledge scores between pediatricians and parents regarding the hymen (3.7 versus 1.3; p < 0.0001). Almost two-thirds of pediatricians (63%) felt comfortable providing sexual health education directly to their patients, but only 41% felt comfortable educating parents. Pediatricians and parents demonstrate knowledge gaps about the hymen.     

Evaluating Animal-Assisted Therapy in Group Treatment for Child Sexual Abuse

This study evaluates and compares the effectiveness of three group interventions on trauma symptoms for children who have been sexually abused. All of the groups followed the same treatment protocol, with two of them incorporating variations of animal-assisted therapy. A total of 153 children ages 7 to 17 who were in group therapy at a Child Advocacy Center participated in the study. Results indicate that children in the groups that included therapy dogs showed significant decreases in trauma symptoms including anxiety, depression, anger, post-traumatic stress disorder, dissociation, and sexual concerns. In addition, results show that children who participated in the group with therapeutic stories showed significantly more change than the other groups. Implications and suggestions for further research are discussed.