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111.
Shanley Mangeot Kira Armstrong Andrew N Colvin Keith Owen Yeates H Gerry Taylor 《Child neuropsychology》2002,8(4):271-284
Long-term deficits in executive functions following childhood traumatic brain injuries (TBI) were examined using the Behavior Rating Inventory of Executive Function (BRIEF). Parents completed the BRIEF approximately 5 years postinjury as part of a prospective study of children injured between the ages of 6 and 12. The children were between 10 and 19 years of age at the time of the assessment, and included 33 with severe TBI, 31 with moderate TBI, and 34 with orthopedic injuries. Parents also rated children's adaptive functioning and completed several other measures of parent and family functioning. Children were administered a neuropsychological test battery that included several measures of executive functions. The groups displayed a significant linear trend in BRIEF scores, with the largest deficits in executive functions reported in children with severe TBI. BRIEF scores were related consistently across groups to a test of working memory, but not to other neuropsychological measures. BRIEF scores also predicted children's adaptive functioning and behavioral adjustment, as well as parent psychological distress, perceived family burden, and general family functioning. The findings indicate that TBI results in long-term deficits in executive functions that are related to children's psychosocial outcomes, as well as to parent and family functioning. 相似文献
112.
Stefanatos GA 《Neuropsychology review》2008,18(4):305-319
A significant proportion of children diagnosed with Autistic Spectrum Disorder experience a developmental regression characterized
by a loss of previously-acquired skills. This may involve a loss of speech or social responsitivity, but often entails both.
This paper critically reviews the phenomena of regression in autistic spectrum disorders, highlighting the characteristics
of regression, age of onset, temporal course, and long-term outcome. Important considerations for diagnosis are discussed
and multiple etiological factors currently hypothesized to underlie the phenomenon are reviewed. It is argued that regressive
autistic spectrum disorders can be conceptualized on a spectrum with other regressive disorders that may share common pathophysiological
features. The implications of this viewpoint are discussed. 相似文献
113.
J. Ashwin Rambaran Marijtje A. J. van Duijn Jan Kornelis Dijkstra René Veenstra 《Aggressive behavior》2019,45(5):561-570
Although peer victimization mainly takes place within classrooms, little is known about the impact of the classroom context. To this end, we examined whether single-grade and multigrade classrooms (referring to classrooms with one and two grades in the same room) differ in victim–bully relationships in a sample of elementary school children (646 students; age 8–12 years; 50% boys). The occurrence of victim–bully relationships was similar in single-grade and multigrade classrooms formed for administrative reasons, but lower in multigrade classrooms formed for pedagogical reasons. Social network analyses did not provide evidence that peer victimization depended on age differences between children in any of the three classroom contexts. Moreover, in administrative multigrade classrooms, cross-grade victim–bully relationships were less likely than same-grade victim–bully relationships. The findings did not indicate that children in administrative multigrade classrooms are better or worse off in terms of victim–bully relationships than are children in single-grade classrooms. 相似文献
114.
Swanson JM Kinsbourne M Nigg J Lanphear B Stefanatos GA Volkow N Taylor E Casey BJ Castellanos FX Wadhwa PD 《Neuropsychology review》2007,17(1):39-59
Multiple theories of Attention-Deficit/Hyper- activity Disorder (ADHD) have been proposed, but one that has stood the test
of time is the dopamine deficit theory. We review the narrow literature from recent brain imaging and molecular genetic studies
that has improved our understanding of the role of dopamine in manifestation of symptoms of ADHD, performance deficits on
neuropsychological tasks, and response to stimulant medication that constitutes the most common treatment of this disorder.
First, we consider evidence of the presence of dopamine deficits based on the recent literature that (1) confirms abnormalities in dopamine-modulated frontal-striatal circuits, reflected
by size (smaller-than-average components) and function (hypoactivation); (2) clarifies the agonist effects of stimulant medication
on dopaminergic mechanisms at the synaptic and circuit level of analysis; and (3) challenges the most-widely accepted ADHD-related
neural abnormality in the dopamine system (higher-than-normal dopamine transporter [DAT] density). Second, we discuss possible
genetic etiologies of dopamine deficits based on recent molecular genetic literature, including (1) multiple replications that confirm the association of ADHD with
candidate genes related to the dopamine receptor D4 (DRD4) and the DAT; (2) replication of differences in performance of neuropsychological
tasks as a function of the DRD4 genotype; and (3) multiple genome-wide linkage scans that demonstrate the limitations of this
method when applied to complex disorders but implicate additional genes that may contribute to the genetic basis of ADHD.
Third, we review possible environmental etiologies of dopamine deficits based on recent studies of (1) toxic substances that may affect the dopamine system in early development and contribute substantially
to the etiology of ADHD; (2) fetal adaptations in dopamine systems in response to stress that may alter early development
with lasting effects, as proposed by the developmental origins of health and disease hypothesis; and (3) gene-environment
interactions that may moderate selective damage or adaptation of dopamine neurons. Based on these reviews, we identify critical
issues about etiologic subtypes of ADHD that may involve dopamine, discuss methods that could be used to address these issues,
and review old and new theories that may direct research in this area in the future. 相似文献
115.
Neuropsychological methods and techniques have much to offer in the evaluation of the individual suspected as having Attention-Deficit/Hyperactivity
Disorder (ADHD). After a review of the historical evolution of the ADHD concept, incidence and prevalence, and DSM-IV criteria
for diagnosis, especially as regards omission related to gender differences, and other associated cultural, familial, socioenvironmental,
and subject influences, this paper describes a number of dilemmas and obstacles encountered in clinical practice. Included
are the confounds associated with the wide range of possible comorbidities, the insufficiency of current DSM-IV criteria,
the emergence of subtype differentiation and its impact on diagnosis and treatment. The complex relationship between neuropsychological
constructs and ADHD, and obstacles to valid assessment are also addressed. The complexities associated with a thorough ADHD
evaluation are viewed within an impressive and expansive existing scientific framework and recommendations are made for future
directions. 相似文献
116.
117.
Larsson G 《Scandinavian journal of psychology》2006,47(4):253-262
The development leadership model (Larsson et al., 2003), designed to introduce refinements to the transformational leadership model, has been adopted for use in the Swedish Armed Forces. The Developmental Leadership Questionnaire (DLQ) was constructed to measure important parts of the model. The main aim of the study was to evaluate some psychometric properties of the DLQ. Most analyses are based on two subsets of individuals from a sample mostly consisting of male Swedish, military officers, each of whom has rated a given leader (n = 450 and 449 respectively). A second sample consisted of Swedish military cadets (n = 141). The dimensionality was assessed with a confirmatory factor analysis. Most DLQ scales were reasonably well reproduced and showed high or acceptable internal consistency. When related to perceived results of leadership (self-rated by leaders and rated by subordinates), results from multiple regression analyses supported what could be predicted by the theoretical model. It was concluded that the DLQ has acceptable psychometric properties and that the theoretical refinements introduced to the developmental leadership model were empirically supported. 相似文献
118.
Two visual-world eyetracking experiments were conducted to investigate whether, how, and when syntactic and semantic constraints are integrated and used to predict properties of subsequent input. Experiment 1 contrasted auditory German constructions such as, The hare-nominative eats ... (the cabbage-acc) versus The hare-accusative eats ... (the fox-nom), presented with a picture containing a hare, fox, cabbage, and distractor. We found that the probabilities of the eye movements to the cabbage and fox before the onset of NP2 were modulated by the case-marking of NP1, indicating that the case-marking (syntactic) information and verbs' semantic constraints are integrated rapidly enough to predict the most plausible NP2 in the scene. Using English versions of the same stimuli in active/passive voice (Experiment 2), we replicated the same effect, but at a slightly earlier position in the sentence. We discuss the discrepancies in the two Germanic languages in terms of the ease of integrating information across, or within, constituents. 相似文献
119.
Magda L. Dumitru Gitte H. Joergensen Alice G. Cruickshank Gerry T.M. Altmann 《Consciousness and cognition》2013,22(2):562-571
Language is more than a source of information for accessing higher-order conceptual knowledge. Indeed, language may determine how people perceive and interpret visual stimuli. Visual processing in linguistic contexts, for instance, mirrors language processing and happens incrementally, rather than through variously-oriented fixations over a particular scene. The consequences of this atypical visual processing are yet to be determined. Here, we investigated the integration of visual and linguistic input during a reasoning task. Participants listened to sentences containing conjunctions or disjunctions (Nancy examined an ant and/or a cloud) and looked at visual scenes containing two pictures that either matched or mismatched the nouns. Degree of match between nouns and pictures (referential anchoring) and between their expected and actual spatial positions (spatial anchoring) affected fixations as well as judgments. We conclude that language induces incremental processing of visual scenes, which in turn becomes susceptible to reasoning errors during the language-meaning verification process. 相似文献
120.
Patients, when admitted to an intensive care unit (ICU), have one thing in common: their illness is life-threatening. Patients may remain on ICU in a critical condition, needing support with their breathing, circulation, and/or kidneys for varying lengths of time, from days to weeks. During that time the patients will receive sedative and analgesic drugs to ensure compliance with artificial ventilation. Patients recovering from critical illness frequently have little or no recall of their period in ICU, or remember nightmare, hallucinations, or paranoid delusions. The nature, extent and reason for these difficulties, have been under-reported and consequently our purpose was to conduct a review of memory problems experienced by ICU patients. A systematic literature review of computer databases (Medline, PsycLit, and CINAHL) identified 25 relevant papers. In addition, other relevant articles were obtained, citation lists and associated articles retrieved. Due to lack of research on processes underlying memory problems in ICU patients all articles that introduced an insight into possible mechanisms were included in the review. There seem to be two possible processes contributing to memory problems in ICU patients. First the illness and treatment may have a general dampening effect on memory. Delirium and sleep disturbance are both common in ICU patients. Delirium can result in a profound amnesia for the period of confusion. Sleep deprivation exacerbates the confusional state. Slow wave sleep is important for the consolidation of episodic memories. Treatment administered to patients in ICU can have effects on memory. Opiates, benzodiazepines, sedative drugs such as propofol, adrenaline, and corticosteroids can all influence memory. In addition, the withdrawal of drugs, such as benzodiazepines, can cause profound withdrawal reactions, which may contribute to delirium. Second, we hypothesise that there is a process that affects memory negatively for external events but enhances memory for internal events. The physical constraints and social isolation experienced by ICU patients and the life-threatening nature of the illness may increase the experience of hypnagogic hallucinations. Attentional shift during hypnagogic images from external stimuli to internally generated images would explain why ICU patients have such poor recall of external ICU events, but can clearly remember hallucinations and nightmares. Patients describe these memories as being very vivid and this is explored in terms of flashbulb memory formation. The absence of memories for real events on ICU can result in ICU patients remembering paranoid delusions of staff trying to kill them, with little information to reject these vivid memories as unreal. This has implications for patients' future psychological health. 相似文献