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481.
AbstractDrop out is a typical issue in longitudinal studies. When the missingness is non-ignorable, inference based on the observed data only may be biased. This paper is motivated by the Leiden 85+ study, a longitudinal study conducted to analyze the dynamics of cognitive functioning in the elderly. We account for dependence between longitudinal responses from the same subject using time-varying random effects associated with a heterogeneous hidden Markov chain. As several participants in the study drop out prematurely, we introduce a further random effect model to describe the missing data mechanism. The potential dependence between the random effects in the two equations (and, therefore, between the two processes) is introduced through a joint distribution specified via a latent structure approach. The application of the proposal to data from the Leiden 85+ study shows its effectiveness in modeling heterogeneous longitudinal patterns, possibly influenced by the missing data process. Results from a sensitivity analysis show the robustness of the estimates with respect to misspecification of the missing data mechanism. A simulation study provides evidence for the reliability of the inferential conclusions drawn from the analysis of the Leiden 85+ data. 相似文献
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Terranova Francesca Baciadonna Luigi Maccarone Chiara Isaja Valentina Gamba Marco Favaro Livio 《Animal cognition》2023,26(5):1613-1622
Animal Cognition - Animal vocalisations encode a wide range of biological information about the age, sex, body size, and social status of the emitter. Moreover, vocalisations play a significant... 相似文献
484.
Francesca Debora Nuzzolese 《Pastoral Psychology》2006,55(2):223-228
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Marjorie Rhodes Michael T. Rizzo Emily Foster-Hanson Kelsey Moty Rachel A. Leshin Michelle Wang 《Journal of cognition and development》2020,21(4):477-493
ABSTRACT This article introduces an accessible approach to implementing unmoderated remote research in developmental science – research in which children and families participate in studies remotely and independently, without directly interacting with researchers. Unmoderated remote research has the potential to strengthen developmental science by: (1) facilitating the implementation of studies that are easily replicable, (2) allowing for new approaches to longitudinal studies and studies of parent-child interaction, and (3) including families from more diverse backgrounds and children growing up in more diverse environments in research. We describe an approach we have used to design and implement unmoderated remote research that is accessible to researchers with limited programming expertise, and we describe the resources we have made available on a new website (discoveriesonline.org) to help researchers get started with implementing this approach. We discuss the potential of this method for developmental science and highlight some challenges still to be overcome to harness the power of unmoderated remote research for advancing the field. 相似文献
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Irene C. Mammarella Francesca Pazzaglia Cesare Cornoldi 《The British journal of developmental psychology》2008,26(3):337-355
There are a large number of studies demonstrating that visuospatial working memory (VSWM) involves different subcomponents, but there is no agreement on the identity of these dimensions. The present study attempts to combine different theoretical accounts by measuring VSWM. A battery composed of 13 tests was used to assess working memory and, in particular, the hypothesized mechanisms involved in the tasks, that is, active processing and passive recall of visual versus sequential‐spatial versus simultaneous‐spatial versus verbal tasks. The battery consisted of a number of tests already used in previous studies and new tests developed to examine specific components of working memory. We analysed the psychometric characteristics of the tests, the correlations amongst measured variables and estimated the measured variables with structural equation modelling in children attending third and fourth grades. Results revealed that the best model was composed of a specific verbal factor, three visuospatial passive factors (sequential‐spatial, simultaneous‐spatial, and visual) and one visuospatial active factor. 相似文献
489.
The Opinions of GP's Patients About Suicide,Assisted Suicide,Euthanasia, and Suicide Prevention: An Italian Survey
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Stefano Zanone Poma MD PhD Silvia Vicentini Psych Francesca Siviero Psych Antonello Grossi Psych Emanuele Toniolo MD Vincenzo Baldo MD PhD Diego De Leo MD PhD DSc FRANZCP AO 《Suicide & life-threatening behavior》2015,45(4):391-398
A survey about opinions on end‐of‐life issues of a population represented by 1,171 people in the waiting room of general practitioners' surgeries was conducted in a province of northern Italy. Most subjects did not consider suicide as a reasonable option even in cases of a serious and incurable disease. Moreover, subjects did not consider euthanasia as a possible option either; however, they did express an opposite attitude when considering euthanasia in a third‐person perspective. People with a personal history of suicidal behavior appear to present as a different population, overall expressing more open attitudes. 相似文献
490.
ABSTRACTPeople spontaneously attend where others are looking. Recently, it has been debated whether such orienting behaviour is supported by domain-general attentional processes, that involve reading the cues’ directional properties, or by processes that involve attributing mental states to agents. In this Opinion, we summarize key evidence for each position and argue that instead of favouring one or the other view, the available data point to an integrated framework in which the attribution of mental states and the operation of domain-general attentional processes both contribute to social orienting. In addition to providing a novel perspective, this view opens several fruitful future research avenues aimed at understanding how the two processes act together to influence cognitions and behaviour. 相似文献