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481.
Emma Laing George Butterworth Daniel Ansari Marisa Gsdl Elena Longhi Georgia Panagiotaki Sarah Paterson Annette Karmiloff‐Smith 《Developmental science》2002,5(2):233-246
Williams syndrome (WS) is a genetic disorder which results in an uneven cognitive profile. Despite superior language compared to other syndromes in the phenotypic outcome, toddlers with WS are as delayed in their language onset and early linguistic development as are toddlers with other syndromes. The cause of this delay in WS is as yet unknown. In a series of experiments, we examined whether atypical socio‐interactive precursors to language could contribute to the explanation of the late language onset and atypical developmental pathways observed in WS. Experiment 1 showed that despite superficially good social skills, toddlers with WS were only proficient at dyadic interaction. They were impaired in triadic interaction, essential for the referential uses of language, and showed none of the correlations between socio‐interactive markers and language seen in the typical controls. Experiment 2 focused on the comprehension and production of referential pointing. Again, the WS group was impaired, despite vocabulary levels higher than those of typically developing controls. Finally, Experiment 3 examined fine motor skills. The WS lack of pointing could not be explained in terms of motor impairments, since the WS toddlers were proficient at fine motor control, such as the pincer grip. Overall, our data indicate that the early stages of WS language follow an atypical pathway. The findings challenge the frequent claims in the literature that individuals with Williams syndrome have preserved linguistic and social skills. 相似文献
482.
Jarrold C Cocksey J Dockerill E 《Quarterly journal of experimental psychology (2006)》2008,61(2):324-340
Probed recall tasks are often used to assess aspects of children's verbal short-term memory development because they are not subject to potentially confounding output effects. However, the marked recency effects that are observed in probed recall means that these tasks are potentially insensitive to experimental manipulations when later serial positions are probed. This clouds the interpretation of data from probed recall studies in which children of different ages are presented with to-be-remembered lists of different lengths. In two experiments we examined the magnitude of phonological similarity and lexicality effects in both 5- to 6- and 8- to 9-year-old children. In each case performance on probed recall tasks was contrasted with that seen on tests of serial recognition. The results indicated that probed recall tasks are potentially less sensitive to experimental manipulations in younger than older children. However, comparable effects of both phonological similarity and lexicality were seen in both age groups using serial recognition procedures. These findings have implications for the interpretation of other studies that have examined the development of verbal short-term memory using probed recall and for theoretical accounts of the development of phonological similarity and lexicality effects in children. 相似文献
483.
A randomised, double-blind, placebo-controlled, between subjects study design (N=37) was used to investigate the effects of dexamphetamine on explicit new name learning. Participants ingested 10mg of dexamphetamine or placebo daily over 5 consecutive mornings before learning new names for 50 familiar objects plus fillers. The dexamphetamine group recognised and recalled the new names more accurately than the placebo group over the 5 days and 1 month later. Word learning success was not associated with baseline neuropsychological performance, mood, cardiovascular arousal, or sustained attention. These results may have implications for the pharmacological treatment of acquired naming difficulties. 相似文献
484.
Stevens SE Sonuga-Barke EJ Kreppner JM Beckett C Castle J Colvert E Groothues C Hawkins A Rutter M 《Journal of abnormal child psychology》2008,36(3):385-398
The current study examined the persistence and phenotypic presentation of inattention/overactivity (I/O) into early adolescence,
in a sample of institution reared (IR) children adopted from Romania before the age of 43 months. Total sample comprised 144
IR and 21 non-IR Romanian adoptees, and a comparison group of 52 within-UK adoptees, assessed at ages 6 and 11 years. I/O
was rated using Rutter Scales completed by parents and teachers. I/O continued to be strongly associated with institutional
deprivation, with continuities between ages 6 and 11 outcomes. There were higher rates of deprivation-related I/O in boys
than girls, and I/O was strongly associated with conduct problems, disinhibited attachment and executive function but not
IQ more generally, independently of gender. Deprivation-related I/O shares many common features with ADHD, despite its different
etiology and putative developmental mechanisms. I/O is a persistent domain of impairment following early institutional deprivation
of 6 months or more, suggesting there may be a possible pathway to impairment through some form of neuro-developmental programming
during critical periods of early development. 相似文献
485.
Colvert E Rutter M Kreppner J Beckett C Castle J Groothues C Hawkins A Stevens S Sonuga-Barke EJ 《Journal of abnormal child psychology》2008,36(7):1057-1068
Theory of Mind (ToM) and Executive Function (EF) have been associated with autism and with attention-deficit hyperactivity
disorder (ADHD), and hence might play a role in similar syndromes found following profound early institutional deprivation.
In order to examine this possibility the current study included a group of 165 Romanian adoptees, of whom 144 were adopted
into the UK from deprived institutional settings before 43months of age, and a group of 52 within-UK adoptees, all adopted
before 6months of age. Both groups were assessed at 6 and 11years. The Strange Stories task was used to assess ToM and the
Stroop task was used to assess EF, both at age 11. The Romanian adoptees displayed deficits in both ToM and EF compared with
the within-UK adoptee group. The degree of deficit was greater for children who had experienced more than 6months of institutional
deprivation. Deficits in both domains (ToM and EF) were associated with each of the three apparently deprivation-specific
problems, namely quasi-autism, disinhibited attachment and inattention/overactivity. Statistical analyses indicated a mediating
role for both ToM and EF with respect to quasi-autism; possibly a partial mediating role for EF with respect to inattention/overactivity;
and probably no mediating role for either ToM or EF in the case of disinhibited attachment. In conclusion, there is evidence
for a possible mediating role for ToM and EF in the development of some apparently deprivation-specific difficulties in institution-reared
Romanian adoptees, but neither accounts for the overall pattern of deprivation-related difficulties. 相似文献
486.
Inaccuracies in eyewitness accounts can occur when witnesses are exposed to post-event misinformation via discussion with a co-witness. The current study examined the role of co-witness relationship by comparing the memory performance of pairs of romantic couples, friends and previously unacquainted strangers with that of individuals. Ninety-six participants viewed an event and then discussed the witnessed event with a stranger, a romantic partner or a friend. One member of each pair saw a theft take place during the witnessed event. Individual group participants did not discuss the witnessed event with anyone. Results indicate that all co-witness dyads produced less accurate recall accounts than participants who did not interact with another witness. However, witnesses who were previously acquainted with their co-witness (either in a friendship or romantic relationship) were significantly more likely to report information obtained from their co-witness that they had not seen themselves. Prior acquaintance also led to an increased number of incorrect attributions of both guilt and innocence. 相似文献
487.
This study examined cross-sectional and prospective associations between cognitive appraisals and posttraumatic stress disorder (PTSD) symptoms following stroke. While in hospital, stroke patients (n=81) completed questionnaires assessing cognitive appraisals (i.e., negative cognitions about the self, negative cognitions about the world, and self-blame) and PTSD symptoms. PTSD symptoms were assessed again 3 months later when all patients had been discharged from hospital (n=70). Significant correlations were found between the time 1 measures of negative cognitions about the self and the world, but not self-blame, and the severity of PTSD symptoms measured at time 1 and at time 2. Regression analyses revealed that cognitive appraisals explained a significant amount of variance in the severity of PTSD symptoms at time 1, with negative cognitions about the self-emerging as a significant predictor. In contrast, time 1 cognitive appraisals were unable to explain additional variance in time 2 PTSD severity over and above that explained by time 1 PTSD severity. The findings therefore provide only weak support for Ehlers and Clark's cognitive model of PTSD. 相似文献
488.
Past research has shown that tendencies to engage in holistic and analytical reasoning are differentially encouraged by East Asian and Western cultures. But little is known about cultural differences in the perceived value of analytic versus intuitive reasoning. In Study 1, Koreans and Americans ranked the importance of traits including ‘intuitive’ and ‘logical’ in work and family contexts. In Study 2, Euro‐Canadians and East‐Asian‐Canadians read scenarios of intuitive versus rule‐following business decisions. Relative to Western participants, East Asians rated intuitive reasoning as more important and reasonable than analytic reasoning. Implications for the epistemic status of reasoning modes, culture's effect on values about reasoning, and multiculturalism are discussed. 相似文献
489.
Emma Blakey Emma C. Tecwyn Teresa McCormack David A. Lagnado Christoph Hoerl Sara Lorimer Marc J. Buehner 《Developmental science》2019,22(3)
It is well established that the temporal proximity of two events is a fundamental cue to causality. Recent research with adults has shown that this relation is bidirectional: events that are believed to be causally related are perceived as occurring closer together in time—the so‐called temporal binding effect. Here, we examined the developmental origins of temporal binding. Participants predicted when an event that was either caused by a button press, or preceded by a non‐causal signal, would occur. We demonstrate for the first time that children as young as 4 years are susceptible to temporal binding. Binding occurred both when the button press was executed via intentional action, and when a machine caused it. These results suggest binding is a fundamental, early developing property of perception and grounded in causal knowledge. A video abstract of this article can be viewed at https://www.youtube.com/watch?v=EQC_MqjxZQQ 相似文献
490.
Ted K. Turesky Sarah K.G. Jensen Xi Yu Swapna Kumar Yingying Wang Danielle D. Sliva Borjan Gagoski Joseph Sanfilippo Lilla Zllei Emma Boyd Rashidul Haque Shahria Hafiz Kakon Nazrul Islam William A. Petri Charles A. Nelson Nadine Gaab 《Developmental science》2019,22(5)
Childhood poverty has been associated with structural and functional alterations in the developing brain. However, poverty does not alter brain development directly, but acts through associated biological or psychosocial risk factors (e.g. malnutrition, family conflict). Yet few studies have investigated risk factors in the context of infant neurodevelopment, and none have done so in low‐resource settings such as Bangladesh, where children are exposed to multiple, severe biological and psychosocial hazards. In this feasibility and pilot study, usable resting‐state fMRI data were acquired in infants from extremely poor (n = 16) and (relatively) more affluent (n = 16) families in Dhaka, Bangladesh. Whole‐brain intrinsic functional connectivity (iFC) was estimated using bilateral seeds in the amygdala, where iFC has shown susceptibility to early life stress, and in sensory areas, which have exhibited less susceptibility to early life hazards. Biological and psychosocial risk factors were examined for associations with iFC. Three resting‐state networks were identified in within‐group brain maps: medial temporal/striatal, visual, and auditory networks. Infants from extremely poor families compared with those from more affluent families exhibited greater (i.e. less negative) iFC in precuneus for amygdala seeds; however, no group differences in iFC were observed for sensory area seeds. Height‐for‐age, a proxy for malnutrition/infection, was not associated with amygdala/precuneus iFC, whereas prenatal family conflict was positively correlated. Findings suggest that it is feasible to conduct infant fMRI studies in low‐resource settings. Challenges and practical steps for successful implementations are discussed. 相似文献