RESUMO
Stability and flexibility are fundamental to an intelligent cognitive system. Here, we examined the relationship between stability in selective attention and explicit control of flexible attention. Preschoolers were tested on the Dimension Preference (DP) task, which measures the stability of selective attention to an implicitly primed dimension, and the Dimension Change Card Sort (DCCS) task, which measures flexible attention switching between dimensions. Children who successfully switched on the DCCS task were more likely than those who perseverated to sustain attention to the primed dimension on the DP task across trials. We propose that perseverators have less stable attention and distribute their attention between dimensions, whereas switchers can successfully stabilize attention to individual dimensions and, thus, show more enduring priming effects. Flexible attention may emerge, in part, from implicit processes that stabilize attention even in tasks not requiring switching.
Assuntos
Atenção , Tomada de Decisões , Pré-Escolar , Função Executiva , Feminino , Humanos , Indiana , Inteligência , Masculino , Estimulação LuminosaRESUMO
BACKGROUND: Electronic health records change the landscape of patient data sharing and privacy by increasing the amount of information collected and stored and the number of potential recipients. Patients desire granular control over who receives what information in their electronic health record (EHR), but there are no current patient interfaces that allow them to record their preferences for EHR access. OBJECTIVE: Our aim was to derive the user needs of patients regarding the design of a user interface that records patients' individual choices about who can access data in their EHRs. DESIGN: We used semi-structured interviews. SETTING: The study was conducted in Central Indiana. PARTICIPANTS: Thirty patients with data stored in an EHR, the majority of whom (70 %) had highly sensitive health EHR data, were included in the study. APPROACH: We conducted a thematic and quantitative analysis of transcribed interview data. KEY RESULTS: Patients rarely knew what data were in their EHRs, but would have liked to know. They also wanted to be able to control who could access what information in their EHR and wanted to be notified when their data we re accessed. CONCLUSIONS: We derived six implications for the design of a patient-centered tool to allow individual choice in the disclosure of EHR: easy patient access to their EHRs; an overview of current EHR sharing permissions; granular, hierarchical control over EHR access; EHR access controls based on dates; contextual privacy controls; and notification when their EHRs are accessed.
Assuntos
Tomada de Decisões , Registros Eletrônicos de Saúde/organização & administração , Disseminação de Informação , Sistemas Computadorizados de Registros Médicos/organização & administração , Adulto , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Indiana , Entrevistas como Assunto , Masculino , Pessoa de Meia-Idade , Avaliação das Necessidades , Participação do Paciente , Relações Profissional-Paciente , Pesquisa QualitativaRESUMO
We review and relate two literatures on the development of attention in children: one concerning flexible attention switching and the other concerning selective attention. The first is a growing literature on preschool children's performances in an attention-switching task indicating that children become more flexible in their attentional control during the preschool years. The second literature encompasses a large and robust set of phenomena for the same developmental period that indicates a protracted course of development for selective attention in children. We ask whether developmental changes in processes of selective attention may contribute to more flexible attention switching. We consider the two sets of phenomena with respect to this question and propose an empirical agenda for their joint study that may lead ultimately to a unified account of the development of selective attention and attention switching.
Assuntos
Atenção/fisiologia , Desenvolvimento Infantil/fisiologia , Reconhecimento Visual de Modelos/fisiologia , Desempenho Psicomotor/fisiologia , Criança , Aprendizagem por Discriminação/fisiologia , HumanosRESUMO
In the Dimension Change Card Sort (DCCS) task, 3-year-olds can sort cards well by one dimension but have difficulty in switching to sort the same cards by another dimension when asked; that is, they perseverate on the first relevant information. What is the information that children perseverate on? Using a new version of the DCCS, the experiments in this article reveal that there are two types of perseverators: those who perseverate at the level of dimensions and those who perseverate at the level of values (stimulus features). This novel finding has implications for theories of perseveration.
Assuntos
Atenção/fisiologia , Formação de Conceito/fisiologia , Função Executiva/fisiologia , Reconhecimento Visual de Modelos/fisiologia , Estimulação Luminosa/métodos , Pré-Escolar , Feminino , Humanos , Masculino , Análise e Desempenho de TarefasRESUMO
One of the most prominent issues in early cognitive and linguistic development concerns how children figure out meanings of words from hearing them in context, since in many contexts there are multiple words and multiple potential referents for those words. Recent findings concerning on-line sentence comprehension suggest that, within the conversational context, potential referents compete for mappings to words. Three experiments examined whether such competitive processes may play a role in young children's learning of novel adjectives in an artificial word learning task. According to a competitive process view, although young children often mismap adjectives to whole objects rather than the properties of objects, explicitly mentioned familiar words should strongly map to referents consistent with those words and thereby decrease the likelihood of novel words being mismapped to these referents. Experiments 1 and 2 examined the role of the mere mention of familiar words and the role of word order in two year olds' ability to map a novel adjective to a property. Experiment 3 examined these processes in three year olds. The results indicate that lexical competition plays a particularly strong role in helping two year olds map a novel object to a property, whereas syntactic information about form class may also be informative to older children. The results suggest how fundamental processes of lexical competition in on-line word comprehension may give young learners a way to leverage known words in learning new words.
RESUMO
OBJECTIVE: To assess patients' desire for granular level privacy control over which personal health information should be shared, with whom, and for what purpose; and whether these preferences vary based on sensitivity of health information. MATERIALS AND METHODS: A card task for matching health information with providers, questionnaire, and interview with 30 patients whose health information is stored in an electronic medical record system. Most patients' records contained sensitive health information. RESULTS: No patients reported that they would prefer to share all information stored in an electronic medical record (EMR) with all potential recipients. Sharing preferences varied by type of information (EMR data element) and recipient (eg, primary care provider), and overall sharing preferences varied by participant. Patients with and without sensitive records preferred less sharing of sensitive versus less-sensitive information. DISCUSSION: Patients expressed sharing preferences consistent with a desire for granular privacy control over which health information should be shared with whom and expressed differences in sharing preferences for sensitive versus less-sensitive EMR data. The pattern of results may be used by designers to generate privacy-preserving EMR systems including interfaces for patients to express privacy and sharing preferences. CONCLUSIONS: To maintain the level of privacy afforded by medical records and to achieve alignment with patients' preferences, patients should have granular privacy control over information contained in their EMR.