نتایج جستجو برای: سفتهبازی کوتاهمدت short term speculation

تعداد نتایج: 893715  

Journal: :Erkenntnis 2021

Journal: :Journal of Financial and Quantitative Analysis 2022

Abstract I exploit the leveraged exchange-traded funds’ (ETFs’) primary market to measure aggregate, uninformed, gambling-like demand, that is, speculation sentiment. The ETFs’ is a novel setting provides observable arbitrage activity attributed correcting mispricing between shares and their underlying assets. proxies for magnitude direction of speculative demand shocks use them form Speculatio...

2017
Rumeysa Gunduz Can Thomas Schack Dirk Koester

The present study focuses on the functional interactions of cognition and manual action control. Particularly, we investigated the neurophysiological correlates of the dual-task costs of a manual-motor task (requiring grasping an object, holding it, and subsequently placing it on a target) for working memory (WM) domains (verbal and visuospatial) and processes (encoding and retrieval). Thirty p...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2011
Roy Luria Edward K Vogel

Previous research suggested that working memory (WM) does not play any significant role in visual search. In three experiments, we investigated the search difficulty and individual differences in WM capacity as determinants of WM involvement during visual search tasks, using both behavioral and electrophysiological markers [i.e., the contralateral delay activity (CDA), which is a marker for WM ...

Journal: :Experimental psychology 2008
John N Towse Nelson Cowan Graham J Hitch Neil J Horton

We describe and evaluate a recall reconstruction hypothesis for working memory (WM), according to which items can be recovered from multiple memory representations. Across four experiments, participants recalled memoranda that were either integrated with or independent of the sentence content. We found consistently longer pauses accompanying the correct recall of integrated compared with indepe...

2012
Vanessa R. Simmering Sammy Perone

A well-known characteristic of working memory (WM) is its limited capacity. The source of such limitations, however, is a continued point of debate. Developmental research is positioned to address this debate by jointly identifying the source(s) of limitations and the mechanism(s) underlying capacity increases. Here we provide a cross-domain survey of studies and theories of WM capacity develop...

Journal: :Psychonomic bulletin & review 2007
Zhe Chen Celestien C Chan

Previous studies have shown that working memory (WM) plays an important role in selective attention, sothat high WM load leads to inefficient distractor inhibition, in comparison with low WM load. In the present study, we examined the effect of WM on distractor processing while the extent of attentional focus was held constant. Our results show that WM load affected distractor processing only w...

Journal: :Psychological research 2011
Eliot Hazeltine Timothy Wifall

Dual-task costs depend on the specific pairings of stimulus and response modalities. Such findings are analogous to domain-specific effects in the working memory (WM) literature, in which items compete for limited capacity when they involve related types of information. The present study explicitly examines the relationship between modality-pairing effects on dual-task costs and domain-specific...

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