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941.
Prior research suggests that boundary objects gain meaning through group interaction. Drawing from the literature on strategic ambiguity, we explore the possibility that individuals strategically create potential boundary objects in an attempt to shape the meanings that groups develop. From ethnographic observations of automotive engineers, we identify 2 creation strategies: ambiguity (to create objects that support multiple meanings) and clarity (to create objects that permit a particular meaning). We detail design activities that engineers undertook to create objects under each strategy. We find that, when creating objects, engineers favored a strategy of ambiguity, which they believed would foster healthy long‐term group interactions, over a strategy of clarity, which they tended to employ only when they expected resistance to their ideas. 相似文献
942.
Giancarlo Dimaggio Giuseppe Nicolò Raffaele Popolo Antonio Semerari Antonino Carcione 《Psychologie appliquee》2006,55(3):397-407
To understand how persons self-regulate, we need, as Cervone, Shadel, Smith, and Fiori (2006 ) assert, to refer to personality science, with which it is possible to identify the multifarious psychological elements and processes helping or hindering action programming, overcoming difficulties, and error correction. Personality disorder research and personality science itself demonstrate that dysfunctions in two skills—self-monitoring and mindreading—worsen self-regulation and lead individuals to fail chronically to achieve goals in the social domain. Here we describe how poor self-reflection and biased mindreading impair self-regulation in personality disorders and other clinical conditions and make some suggestions about how to tackle them in psychotherapy. 相似文献
943.
944.
While psychological research has long shown that adolescence is a period of major cognitive and affective transition, recent neurophysiological research has shown that adolescence is also accompanied by observable maturational changes in the brain, both in terms of structure and neurotransmitter function. Given this situation, we would expect that there should be observable and perhaps major changes in electrocortical activity and responses. In this review, we discuss developmental reductions in EEG power and alterations in the dominant band of EEG oscillation frequency, moderated by developmental factors such as growth-related changes in grey and white matter, and in the developmental history of cognitive and sociocultural stressors. Similarly, we summarize alterations in event-related potential components reflecting stimulus processing, response monitoring, and response anticipation. We review the literature on such changes in EEG and event-related potentials during the adolescent period and summarize some of the new developments in the field as well as interpretative difficulties. 相似文献
945.
Purpose
Organizational creativity research has a curious misalignment between construct definitions and measurement model specifications—definitions embrace multiple facets, but empirical measures do not. The purpose of this study was to examine potential measurement model misspecification in organizational creativity research. We compare whether creativity is best assessed as a unidimensional common latent construct model with reflective indicators or as a multi-dimensional composite latent construct model with formative indicators. 相似文献946.
The aim of the present study was to investigate working memory for ballet moves in expert dancers. Experiment 1 showed that a concurrent spatial task did not interfere with the recall of a sequence of ballet moves when these were encoded alone without being associated with spatial locations. Experiment 2 showed that a concurrent motor task selectively interfered with the recall of ballet moves while neither a concurrent motor task nor a spatial task affected recall of the specific locations where each ballet move had to be performed. Experiment 3 showed that spatial interference affected recall of sequences of locations when these were encoded alone. Finally, in Experiment 4, a similarity effect for patterned ballet movements was shown. Taken together results show that spatial interference does not affect short‐term memory for ballet moves thus suggesting that working memory might contain a system for motor configurations. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
947.
Tenorio G Connor SA Guévremont D Abraham WC Williams J O'Dell TJ Nguyen PV 《Learning & memory (Cold Spring Harbor, N.Y.)》2010,17(12):627-638
The capacity for long-term changes in synaptic efficacy can be altered by prior synaptic activity, a process known as "metaplasticity." Activation of receptors for modulatory neurotransmitters can trigger downstream signaling cascades that persist beyond initial receptor activation and may thus have metaplastic effects. Because activation of β-adrenergic receptors (β-ARs) strongly enhances the induction of long-term potentiation (LTP) in the hippocampal CA1 region, we examined whether activation of these receptors also had metaplastic effects on LTP induction. Our results show that activation of β-ARs induces a protein synthesis-dependent form of metaplasticity that primes the future induction of late-phase LTP by a subthreshold stimulus. β-AR activation also induced a long-lasting increase in phosphorylation of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) GluA1 subunits at a protein kinase A (PKA) site (S845) and transiently activated extracellular signal-regulated kinase (ERK). Consistent with this, inhibitors of PKA and ERK blocked the metaplastic effects of β-AR activation. β-AR activation also induced a prolonged, translation-dependent increase in cell surface levels of GluA1 subunit-containing AMPA receptors. Our results indicate that β-ARs can modulate hippocampal synaptic plasticity by priming synapses for the future induction of late-phase LTP through up-regulation of translational processes, one consequence of which is the trafficking of AMPARs to the cell surface. 相似文献
948.
Kyle E. Mathewson Monica Fabiani Gabriele Gratton Diane M. Beck Alejandro Lleras 《Cognition》2010,115(1):186-191
At near-threshold levels of stimulation, identical stimulus parameters can result in very different phenomenal experiences. Can we manipulate which stimuli reach consciousness? Here we show that consciousness of otherwise masked stimuli can be experimentally induced by sensory entrainment. We preceded a backward-masked stimulus with a series of rapid visual events presented at 12 Hz for 800 ms. Peaks in visual sensitivity (d′) were observed when the target appeared at the time that the next entraining stimuli would have occurred. Observers’ sensitivity for identical masked near-threshold stimuli increased by factors as large as 55%, but only at this precise moment in time. These data thus reveal that awareness of near-threshold stimuli can be manipulated by entrainment to rhythmic events, supporting the functional role of induced oscillations in underlying cortical excitability, and suggest a plausible mechanism of temporal attention. 相似文献
949.
Juan Antonio Amador-Campos Maria Forns-Santacana Joan Guàrdia-Olmos Maribel Peró-Cebollero 《Journal of psychopathology and behavioral assessment》2006,28(1):23-32
The agreement between teachers’ and parents’ ratings of the prevalence of DSM-IV attention deficit hyperactivity disorder (ADHD) symptoms and the concordance of the factor structure of ADHD symptoms was analyzed in a sample of 653 Spanish schoolchildren aged 4 to 12 divided into two age groups. The prevalence of ADHD symptoms ranged between 0.66 and 16.73% and was higher when the rater was the teacher. Agreement between parents and teachers was low. Confirmatory factor analysis (CFA) shows a slightly better fit for the three-factor model (Inattention, Hyperactivity and Impulsivity) than for the two-factor model (Inattention and Hyperactivity–impulsivity), except for parents’ ratings in the sample of children under six. CFA using a multitrait–multimethod model (CFA-MTMM) shows similar results. 相似文献
950.
Diane Proudfoot 《Journal of Philosophical Logic》2006,35(1):9-40
The canonical version of possible worlds semantics for story prefixes is due to David Lewis. This paper reassesses Lewis's
theory and draws attention to some novel problems for his account. 相似文献