scholarly journals Sleep Benefits Memory for Semantic Category Structure While Preserving Exemplar-Specific Information

2017 ◽  
Author(s):  
Anna C. Schapiro ◽  
Elizabeth A. McDevitt ◽  
Lang Chen ◽  
Kenneth A. Norman ◽  
Sara C. Mednick ◽  
...  
Keyword(s):  
Semantic Category ◽  
Sleep Stages ◽  
Specific Information ◽  
Semantic Learning ◽  
Object Categories ◽  
Novel Objects ◽  
Category Exemplars ◽  
The Impact ◽  
Shared Structure ◽  
Inference Task

AbstractSemantic memory encompasses knowledge about both the properties that typify concepts (e.g. robins, like all birds, have wings) as well as the properties that individuate conceptually related items (e.g. robins, in particular, have red breasts). We investigate the impact of sleep on new semantic learning using a property inference task in which both kinds of information are initially acquired equally well. Participants learned about three categories of novel objects possessing some properties that were shared among category exemplars and others that were unique to an exemplar, with exposure frequency varying across categories. In Experiment 1, memory for shared properties improved and memory for unique properties was preserved across a night of sleep, while memory for both feature types declined over a day awake. In Experiment 2, memory for shared properties improved across a nap, but only for the lower-frequency category, suggesting a prioritization of weakly learned information early in a sleep period. The increase was significantly correlated with amount of REM, but was also observed in participants who did not enter REM, suggesting involvement of both sleep stages. The results provide the first evidence that sleep improves memory for the shared structure of object categories, while simultaneously preserving object-unique information.

scholarly journals The psychological impact of the COVID-19 pandemic on adults with autism: a survey study across three countries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Danna Oomen ◽  
Annabel D. Nijhof ◽  
Jan R. Wiersema
Keyword(s):  
Mental Health ◽  
Social Life ◽  
Social Stress ◽  
Mental Health Problems ◽  
Survey Study ◽  
Specific Information ◽  
Long Term Effects ◽  
Adults With Autism ◽  
Psychological Burden ◽  
The Impact

Abstract Background Previous studies have reported a negative psychological and mental health impact of the COVID-19 pandemic. This impact is likely to be stronger for people with autism as they are at heightened risk of mental health problems and because the pandemic directly affects social functioning and everyday routines. We therefore examined COVID-19 pandemic-related changes in mental health, the impact of the pandemic on their social life and routines, satisfaction with pandemic-related information and tips, and participants’ wishes for guidance. Methods We used a mixed-method approach, collecting quantitative and qualitative survey data from adults with and without autism across three European countries: Belgium, the Netherlands, and the UK (N = 1044). Results We found an increase in depression and anxiety symptoms in response to the pandemic for both the non-autism and the autism group, which was greater for adults with autism. Furthermore, adults with autism showed a greater increase in worries about their pets, work, getting medication and food, and their own safety/security. They felt more relieved from social stress, yet experienced the loss of social contact as difficult. Adults with autism also felt more stressed about the loss of routines. Pleasant changes noted by adults with autism were the increase in solidarity and reduced sensory and social overload. Adults with autism frequently reported problems with cancellation of guidance due to the pandemic and expressed their wish for (more) autism-specific information and advice. Limitations Our sample is likely to reflect some degree of selection bias, and longitudinal studies are needed to determine long-term effects. Conclusions Results highlight the psychological burden of the pandemic on adults with autism and shed light on how to support them during this COVID-19 pandemic, which is especially important now that the pandemic is likely to have a prolonged course. There is a need for accessible, affordable (continued) support from health services. Guidance may focus on the maintenance of a social network, and adjusting routines to the rapid ongoing changes. Finally, we may learn from the COVID-19 pandemic-related changes experienced as pleasant by adults with autism to build a more autism-friendly society post-pandemic.

scholarly journals The Impact of Interruptions on Feature Change Detection within Dynamic Scenes

2019 ◽  
Vol 63 (1) ◽  
pp. 1430-1434
Author(s):  
Kimberly N. Perry ◽  
Mark W. Scerbo
Keyword(s):  
Working Memory ◽  
Situation Awareness ◽  
Specific Information ◽  
Limited Information ◽  
Dynamic Scenes ◽  
Feature Change ◽  
Activation Level ◽  
Level 1 ◽  
Perceptual Changes ◽  
The Impact

The goal of the present study was to examine how interruptions occurring in dynamic scenes affect the ability to detect perceptual changes during level 1 situation awareness (SA). Undergraduates were asked to watch 24 brief videos (half with interruptions) including 8 with perceptual feature changes. All videos were unique and contained multiple dynamic objects. Three different sets of instructions regarding the changes were given to successive groups: no information, limited information, and feature specific information. Of the eight changes, half occurred during a visual interruption and half with no interruption. Results showed that participants detected few changes, but detections increased when given more information about the nature of the changes in the absence of interruptions. The findings suggest that interruptions may facilitate the decay of an objects’ activation level in working memory and that level 1 SA may be particularly fragile when the visual scene is interrupted.

The experiences and needs of children living with a parent with young onset dementia: results from the NeedYD study

2013 ◽  
Vol 26 (12) ◽  
pp. 2001-2010 ◽  
Author(s):  
Joany K. Millenaar ◽  
Deliane van Vliet ◽  
Christian Bakker ◽  
Myrra J. F. J. Vernooij-Dassen ◽  
Raymond T. C. M. Koopmans ◽  
...  
Keyword(s):  
Coping Styles ◽  
Specific Information ◽  
Structured Interviews ◽  
Specific Knowledge ◽  
Young Onset ◽  
Care And Support ◽  
Young Parent ◽  
Young Onset Dementia ◽  
The Impact ◽  
Family Centered

ABSTRACTBackground:Children of patients with young onset dementia (YOD) who are confronted with a parent who has a progressive disease, often assist in caregiving tasks, which may have a great impact on their lives. The objective of the present study is to explore the experiences of children living with a young parent with dementia with a specific focus on the children's needs.Methods:Semi-structured interviews with 14 adolescent children between the ages of 15 and 27 years of patients with YOD were analyzed using inductive content analysis. Themes were identified based on the established codes.Results:The emerging categories were divided into three themes that demonstrated the impact of dementia on daily life, different ways of coping with the disease, and children's need for care and support. The children had difficulties managing all of the responsibilities and showed concerns about their future. To deal with these problems, they demonstrated various coping styles, such as avoidant or adaptive coping. Although most children were initially reluctant to seek professional care, several of them expressed the need for practical guidance to address the changing behavior of their parent. The children felt more comfortable talking to someone who was familiar with their situation and who had specific knowledge of YOD and the available services.Conclusion:In addition to practical information, more accessible and specific information about the diagnosis and the course of YOD is needed to provide a better understanding of the disease for the children. These findings underline the need for a personal, family-centered approach.

Market overreaction, firm-specific information and macroeconomic variables in US and Chinese markets during COVID-19

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ooi Kok Loang ◽  
Zamri Ahmad
Keyword(s):  
Unemployment Rate ◽  
Stock Return ◽  
Design Methodology ◽  
Specific Information ◽  
Content Type ◽  
Macroeconomic Variables ◽  
Real Gdp ◽  
Chinese Markets ◽  
The Impact ◽  
Loser Portfolio

PurposeThis study examines the impact of firm-specific information and macroeconomic variables on market overreaction of US and Chinese winner and loser portfolio before and during COVID-19.Design/methodology/approachThe firm-specific information includes firm size, volume, volatility, return of asset (ROA), return of equity (ROE), earning per share (EPS) and quick ratio while the macroeconomic variables are export rate, import rate, real GDP, nominal GDP, FDI, IPI and unemployment rate. Besides, one-third of the top performance stocks are categorized as winner portfolio while one-third of lowest performance stocks are categorized as loser portfolio. This study uses AECR to indicate stock return and measure market overreaction. GAECR is used to determine contrarian profit. The data range of pre-COVID-19 is from 1-Jan-2015 to 31-Dec-2019 while the period of COVID-19 is from 1-Jan-2020 to 31-Dec-2020.FindingsIn pre-COVID-19, firm-specific information (volatility, ROA, ROE and EPS) and macroeconomic variables are found to be correlated to stock return in US and Chinese portfolios except Chinese winner portfolio. Nonetheless, the impact of firm-specific information has vanished and macroeconomic variables are significant to stock return in COVID-19. It shows that investors rely on the economic indicators to trade in turbulent period due to emergence of COVID-19 as a disruption in market. Furthermore, US and Chinese portfolios are overreacted during COVID-19. Chinese loser portfolio has higher tendency of overreaction than US loser portfolio while US winner portfolio has higher tendency of overreaction than Chinese winner portfolio.Originality/valueThe results of this study assists academician, practitioners and investors on understanding and create awareness to the existence of market overreaction and the determinants that can cause the phenomenon.

scholarly journals Estimating post-release mortality of European sea bass based on experimental angling

2018 ◽  
Vol 75 (4) ◽  
pp. 1483-1495 ◽  
Author(s):  
Wolf-Christian Lewin ◽  
Harry Vincent Strehlow ◽  
Keno Ferter ◽  
Kieran Hyder ◽  
Jan Niemax ◽  
...  
Keyword(s):  
Stock Assessment ◽  
Sea Bass ◽  
Specific Information ◽  
Experimental Conditions ◽  
European Sea Bass ◽  
Air Exposure ◽  
Cumulative Impact ◽  
The Impact ◽  
Mortality Estimates ◽  
Country Specific

Abstract European sea bass (Dicentrarchus labrax) is an important target species for recreational and commercial fisheries. In recent years, the spawning stock biomass has declined markedly in some areas, and strict management measures have been introduced. However, the development of appropriate stock assessment and fisheries management has been hampered by a lack of information on post-release mortality. This study investigated post-release mortality of sea bass captured with common recreational fishing gear under experimental conditions in an aquaculture facility over 10 d. Three experiments investigated: (i) the effects of different bait types; (ii) the impact of prolonged air exposure; and (iii) the impact of deep hooking on post-release mortality. By combining the experimental results with country-specific information on sea bass angling practices, estimates of post-release mortality are provided for the northern sea bass stock. No mortality was observed for sea bass captured on artificial baits. The use of natural baits resulted in a mortality of 13.9% (95% CI = 4.7–29.5%), which was associated with deep hooking, hooking injuries, and prolonged air exposure. The use of artificial baits and short air exposure (≤30 s) increased survival probability, whereas deep hooking resulted in 76.5% (95% CI = 50.0–93.2%) mortality. Depending on country-specific angling practices, post-release mortality estimates ranged from 2.8% to 9.1% (mean = 5.0%, 95% CI = 1.7–14.4%) for northern sea bass. Despite these relatively low mortality estimates, post-release mortality should be considered in stock assessments as its cumulative impact may be high. Moreover, post-release mortality can be reduced by implementing species-specific best practice guidelines.

scholarly journals Social Welfare Analysis under Different Levels of Consumers’ Privacy Regulation

2021 ◽  
Vol 16 (7) ◽  
pp. 2943-2964
Author(s):  
Xudong Lin ◽  
Xiaoli Huang ◽  
Shuilin Liu ◽  
Yulin Li ◽  
Hanyang Luo ◽  
...  
Keyword(s):  
Social Welfare ◽  
Information Sharing ◽  
Privacy Protection ◽  
Rapid Development ◽  
Specific Information ◽  
Privacy Regulation ◽  
Privacy Preference ◽  
The Cost ◽  
The Impact ◽  
Different Levels

With the rapid development of information technology, digital platforms can collect, utilize, and share large amounts of specific information of consumers. However, these behaviors may endanger information security, thus causing privacy concerns among consumers. Considering the information sharing among firms, this paper constructs a two-period duopoly price competition Hotelling model, and gives insight into the impact of three different levels of privacy regulations on industry profit, consumer surplus, and social welfare. The results show that strong privacy protection does not necessarily make consumers better off, and weak privacy protection does not necessarily hurt consumers. Information sharing among firms will lead to strong competitive effects, which will prompt firms to lower the price for new customers, thus damaging the profits of firms, and making consumers’ surplus higher. The level of social welfare under different privacy regulations depends on consumers’ product-privacy preference, and the cost of information coordination among firms. With the cost of information coordination among firms increasing, it is only in areas where consumers have greater privacy preferences that social welfare may be optimal under the weak regulation.

Hormesis - Implications for risk assessment caloric intake (body weight) as an exemplar

1998 ◽  
Vol 17 (8) ◽  
pp. 454-459 ◽  
Author(s):  
Angelo Turturro ◽  
Bruce Hass ◽  
Ronald W Hart
Keyword(s):  
Risk Assessment ◽  
Caloric Intake ◽  
Toxicity Testing ◽  
Risk Assessments ◽  
Specific Information ◽  
Response Curves ◽  
Hormetic Effect ◽  
The Impact ◽  
Hormetic Response

Hormesis can be considered as a parameter which has a non-monotonic relationship with some endpoint. Since caloric intake is such a parameter, and the impact of this parameter on risk assessment has been fairly well characterized, it can provide clues as to how to integrate the information from a hormetic parameter into risk assessments for toxicants. Based on the work with caloric intake, one could: (a) define a biomarker for hormetic effect; (b) integrate specific information on when in the animals lifespan the parameter is active to influence parameters such as survival; (c) evaluate component effects of the overall hormetic response; and (d) address the consequences of a non-monotonic relationship between the hormetic parameter and endpoints critical for risk assessment. These impacts on risk assessments have been characterized for chronic tests, but are also true for short-term tests. A priority is the characterization of the dose-response curves for hormetic parameters. This quantification will be critical in utilizing them in risk assessment. With this information, one could better quantitatively address the changes one expects to result from the hormetic parameter, and limit the uncertainty and variability which occurs in toxicity testing.

scholarly journals Feature Diagnosticity Affects Representations of Novel and Familiar Objects

2014 ◽  
Vol 26 (12) ◽  
pp. 2735-2749 ◽  
Author(s):  
Nina S. Hsu ◽  
Margaret L. Schlichting ◽  
Sharon L. Thompson-Schill
Keyword(s):  
Fruits And Vegetables ◽  
Temporal Cortex ◽  
Familiar Object ◽  
Behavioral Effects ◽  
Diagnostic Features ◽  
Novel Objects ◽  
Human Participants ◽  
Ventral Temporal Cortex ◽  
Concept Representations ◽  
The Impact

Many features can describe a concept, but only some features define a concept in that they enable discrimination of items that are instances of a concept from (similar) items that are not. We refer to this property of some features as feature diagnosticity. Previous work has described the behavioral effects of feature diagnosticity, but there has been little work on explaining why and how these effects arise. In this study, we aimed to understand the impact of feature diagnosticity on concept representations across two complementary experiments. In Experiment 1, we manipulated the diagnosticity of one feature, color, for a set of novel objects that human participants learned over the course of 1 week. We report behavioral and neural evidence that diagnostic features are likely to be automatically recruited during remembering. Specifically, individuals activated color-selective regions of ventral temporal cortex (specifically, left fusiform gyrus and left inferior temporal gyrus) when thinking about the novel objects, although color information was never explicitly probed during the task. Moreover, multiple behavioral and neural measures of the effects of feature diagnosticity were correlated across participants. In Experiment 2, we examined relative color association in familiar object categories, which varied in feature diagnosticity (fruits and vegetables, household items). Taken together, these results offer novel insights into the neural mechanisms underlying concept representations by demonstrating that automatic recruitment of diagnostic information gives rise to behavioral effects of feature diagnosticity.

Theoretical and Applied Issues on the Impact of Information on Musical Creativity

2018 ◽  
pp. 590-604
Author(s):  
Charilaos Lavranos ◽  
Petros Kostagiolas ◽  
Konstantina Martzoukou
Keyword(s):  
Information Seeking ◽  
Information Technologies ◽  
Specific Information ◽  
Online Information ◽  
Rapid Changes ◽  
Seeking Behavior ◽  
Musical Creativity ◽  
Music Information ◽  
The Impact

This century is an era of information and knowledge intensification. Novel information systems and services are developing through modern online information technologies. The rapid changes in the online information environment have greatly affected the way in which individuals search for music information and engage with musical creativity, within different music domains and for different purposes which involve composition, performance and improvisation, analysis and listening. The aim of this book chapter is to investigate the theoretical and practical issues relating to the impact of music information on musical creativity from an information seeking behavior perspective. Musical creativity is perceived as an intentional process which acts as a motivator for information seeking, leading to the utilization of different information resources and to the development of specific information seeking preferences. The chapter highlights the implications for research in this area and presents a research agenda for the interrelation between music information seeking and musical creativity.

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