Twelve-month-olds communicate helpfully and appropriately for knowledgeable and ignorant partners

In the current study we investigated whether 12-month-old infants gesture appropriately for knowledgeable versus ignorant partners, in order to provide them with needed information. In two experiments we found that in response to a searching adult, 12-month-olds pointed more often to an object whose location the adult did not know and thus needed information to find (she had not seen it fall down just previously) than to an object whose location she knew and thus did not need information to find (she had watched it fall down just previously). These results demonstrate that, in contrast to classic views of infant communication, infants' early pointing at 12 months is already premised on an understanding of others' knowledge and ignorance, along with a prosocial motive to help others by providing needed information.     

We cannot infer by accepting testimony

Philosophical Studies - While we can judge and believe things by merely accepting testimony, we cannot make inferences by merely accepting testimony. A good theory of inference should explain this....     

Universal parental support for parents of adolescents: Who wants municipality‐based parental support and in what form?

Parenting a child through adolescence can be a challenge for many parents; adolescents go through notable developmental, physical, and psychological changes that affect the relationships around them. Most parents find parental support during these years important. These young people's relationships with their parents are important to their mental health, but although parental support is universally available to parents of younger children, it is still scarce for parents of adolescents. The aim of this study was to explore what factors are associated with interest in universal parental support through telephone interviews and questionnaires with 223 parents of 13‐ to 17‐year‐olds. Parents’ interest in parental support was linked to their own anxious mood, their lower perceived parental capacity, their perception of the child as having psychiatric problems, the parents’ perception of their adolescents’ openness about things and their perception of the adolescent's overall difficulties in daily life due to psychiatric symptoms. The results show that lighter forms of support such as lectures or seminars were more appealing to parents with higher social status. Offering community‐based individual counseling and leader‐led parent training groups therefore has the potential to reach parents with difficulties more equally, while offering support only through lectures and seminars could increase the inequality between parents in different social situations.     

The contribution of working memory to children's mathematical word problem solving

The study explored the contribution of working memory to mathematical word problem solving in children. A total of 69 children in grades 2, 3 and 4 were given measures of mathematical problem solving, reading, arithmetical calculation, fluid IQ and working memory. Multiple regression analyses showed that three measures associated with the central executive and one measure associated with the phonological loop contributed unique variance to mathematical problem solving when the influence of reading, age and IQ were controlled for in the analysis. In addition, the animal dual‐task, verbal fluency and digit span task continued to contribute unique variance when the effects of arithmetical calculation in addition to reading, fluid IQ, and age were controlled for. These findings demonstrate that the phonological loop and a number of central executive functions (shifting, co‐ordination of concurrent processing and storage of information, accessing information from long‐term memory) contribute to mathematical problem solving in children. Copyright © 2006 John Wiley & Sons, Ltd.     

Comparative judgments as an alternative to ratings: identifying the scale origin

Although comparative judgment methods have a number of distinct advantages over ratings, they share one common problem: On the basis of comparative judgments, it is not possible to recover the origin of item evaluations. One item may be judged more positively than another, but this result does not allow any conclusions about whether either of the items are attractive or unattractive. This article discusses the implications of this limitation for the interpretation of individual differences in comparative judgments. It also presents 3 different methods that may allow determination of the scale origin using a nested model comparison approach. An application illustrates the proposed approach as well as the benefits of determining the scale origin in understanding value judgments.     

One-Year-Olds Warn Others About Negative Action Outcomes

Warning others is a paradigm case of communicative helping and prospective action understanding. The current study addressed the ontogeny of warning in infants' gestural communication. We found that 12- and 18-month-olds (n = 84) spontaneously warned an adult by pointing out to her an aversive object hidden in her way (problem condition). In control conditions, the object was either positive (no-problem condition) or the adult had witnessed its placing (problem-known condition), which resulted in significantly less pointing. Results show that infants intervene spontaneously to help others avoid a problem before it has occurred. These acts of warning entail an understanding of negatively defined goals (to avoid an outcome) and incorrect representations of reality. Findings support theories of altruism and social–pragmatic competencies in infancy.     

Correcting Too Much or Too Little? The Performance of Three Chi-Square Corrections

This simulation study investigates the performance of three test statistics, T₁, T₂, and T₃, used to evaluate structural equation model fit under non normal data conditions. T₁ is the well-known mean-adjusted statistic of Satorra and Bentler. T₂ is the mean-and-variance adjusted statistic of Sattertwaithe type where the degrees of freedom is manipulated. T₃ is a recently proposed version of T₂ that does not manipulate degrees of freedom. Discrepancies between these statistics and their nominal chi-square distribution in terms of errors of Type I and Type II are investigated. All statistics are shown to be sensitive to increasing kurtosis in the data, with Type I error rates often far off the nominal level. Under excess kurtosis true models are generally over-rejected by T₁ and under-rejected by T₂ and T₃, which have similar performance in all conditions. Under misspecification there is a loss of power with increasing kurtosis, especially for T₂ and T₃. The coefficient of variation of the nonzero eigenvalues of a certain matrix is shown to be a reliable indicator for the adequacy of these statistics.     

Psychosocial effects associated with dental fear in adult dental patients with avoidance behaviours

Abstract

The most obvious consequence of a genuine dental phobic reaction is the avoidance of necessary dental care. Previous research has indicated that such avoidance has adverse effects on an individual's oral health status, and also reduces the quality of life. However, systematic investigations in this area of dentistry are few and clinical observations and interviews may often fail to elicit information regarding the impairment created outside the dental situation. The present investigation assessed the presence and levels of emotional and social life effects among dental phobic patients with regard to the prevalence of dental and general fears and the length of time for which dentistry had been avoided. It was shown that a majority of the patients felt that they had to curtail their social relations, and many, especially long-term avoiders, reported wide-spread negative social life effects. Often this had extended into feelings of loneliness or to overt social isolation. It remains to be seen whether fear of dentistry itself produces disadvantage or whether these effects are mainly related to personality factors, which can also promote the development of dental fear. Alternatively, poor dental health, which is probably more frequent in anxious patients, may be perceived by these patients and thus impair social relationships.     

Individual and Collective Intentionality: Elaborating the Fundamentality-Question

This is a contribution to the controversy which of individual or collective intentionality is more fundamental. I call it the fundamentality-question. In a first step, I argue that it is really two questions. One is about sense and one about reference. The first is: Can one grasp or understand the concept individual intentionality and, correspondingly, individuality, on the one hand, without grasping or understanding the concept collective intentionality and, correspondingly, collectivity, on the other? The second is: Can the concept individual intentionality and corresponding concept of individuality, on the one hand, refer to something without the concept of collective intentionality and corresponding concept of collectivity referring to something, on the other? Simplifying somewhat, this elaborated fundamentality-question admits of nine answers. In a second step, I pursue a tentative answer to the elaborated fundamentality-question. Given a disambiguation of individuality and, correspondingly, individual intentionality, the answer is the combination of claims that individuality and individual intentionality in one sense is fundamental in reference-dependence but that collectivity and collective intentionality is fundamental in reference-dependence in the other sense of individuality, while collectivity and collective intentionality is in both cases fundamental in sense-dependence.

     

Individual differences in social, cognitive, and morphological aspects of infant pointing

Little is known about the origins of the pointing gesture. We sought to gain insight into its emergence by investigating individual differences in the pointing of 12-month-old infants in two ways. First, we looked at differences in the communicative and interactional uses of pointing and asked how different hand shapes relate to point frequency, accompanying vocalizations, and mothers’ pointing. Second, we looked at differences in social-cognitive skills of point comprehension and imitation and tested whether these were related to infants’ own pointing. Infants’ and mothers’ spontaneous pointing correlated with one another, as did infants’ point production and comprehension. In particular, infants’ index-finger pointing had a profile different from simple whole-hand pointing. It was more frequent, it was more often accompanied by vocalizations, and it correlated more strongly with comprehension of pointing (especially to occluded referents). We conclude that whole-hand and index-finger pointing differ qualitatively and suggest that it is index-finger pointing that first embodies infants’ understanding of communicative intentions.