scholarly journals The visual social environment affects non-additively neighbor spacing and interaction time in zebrafish

2019 ◽  
Author(s):  
Diana Pita ◽  
Esteban Fernández-Juricic

AbstractMany fish form schools and visually track the position of their neighbors in a 3D environment. In this study, we assessed whether zebrafish modified their spacing behavior and interaction time in an additive or multiplicative way relative to multiple sources of visual social information using video playbacks. We simultaneously manipulated: (a) the magnitude of the social cues (by varying the size of the virtual fish), (b) the level of social risk (low, high based on the position of the virtual fish in the water column), and (c) the perceived depth of the social cues (visual horizon absent or present). Each of these factors independently affected spacing behavior (zebrafish increased the separation distance with larger virtual fish, under lower visual social risk, and when depth perception was enhanced), but they did not affect interaction time. However, some of these factors interacted significantly, such that their effects on social behavior depended on each other. For instance, zebrafish decreased their separation distance under high vs. low risk conditions when the virtual fish was the same or smaller size, but this risk effect disappeared with larger virtual fish likely to avoid aggression. Also, zebrafish increased their separation distance when perceived depth was enhanced under low risk, but the perceived depth effect became less pronounced under high risk probably due to dilution effects. Overall, the effects of certain visual social parameters depend on the intensity of other visual social parameters, ultimately tuning up or down different social behavioral responses. We discuss the implications for the spatial organization of fish schools.Significance StatementMany fish form schools and visually track the position of their neighbors in a 3D environment. We found that zebrafish consider multiple visual social sources of information simultaneously to modify their neighbor distance. Thus, their spacing behavior appears to follow multiplicative rules, whereby the spacing response to a visual social parameter depend on the intensity of a different visual social parameter.

2021 ◽  
Vol 8 ◽  
Author(s):  
Diana Pita ◽  
Esteban Fernández-Juricic

Many fish form schools and maintain visual contact with their neighbors in a three-dimensional environment. In this study, we assessed whether zebrafish modified their spacing and interaction time in an additive or multiplicative way relative to multiple sources of social information using computer animations. We simultaneously manipulated: (a) the size of the virtual conspecific (as a proxy of social cue magnitude), (b) the position of the virtual conspecific in the water column (as a proxy of the level of perceived risk), and (c) the absence/presence of the visual horizon (as a proxy of depth perception). We found that the size of the virtual conspecific independently affected spacing behavior (zebrafish increased their separation distance as conspecific size increased). However, some of these factors interacted significantly, such that their effects on social behavior depended on each other. For instance, zebrafish increased their separation distance under high risk conditions when the virtual conspecific was larger, but this risk effect disappeared when the conspecific was the same size or smaller, likely to avoid aggression. Also, zebrafish increased their separation distance when depth perception was enhanced under low risk conditions, but the effect of depth perception disappeared under high risk conditions. Overall, we found that certain dimensions of the visual social environment affected zebrafish spacing behavior in different ways, but they did not affect social interaction time. We discuss the implications of these findings for the spatial organization of fish schools.


2010 ◽  
pp. 73-89
Author(s):  
M.-F. Garcia

The article examines social conditions and mechanisms of the emergence in 1982 of a «Dutch» strawberry auction in Fontaines-en-Sologne, France. Empirical study of this case shows that perfect market does not arise per se due to an «invisible hand». It is a social construction, which could only be put into effect by a hard struggle between stakeholders and large investments of different forms of capital. Ordinary practices of the market dont differ from the predictions of economic theory, which is explained by the fact that economic theory served as a frame of reference for the designers of the auction. Technological and spatial organization as well as principal rules of trade was elaborated in line with economic views of perfect market resulting in the correspondence between theory and reality.


2020 ◽  
Author(s):  
Abdulaziz Abubshait ◽  
Patrick P. Weis ◽  
Eva Wiese

Social signals, such as changes in gaze direction, are essential cues to predict others’ mental states and behaviors (i.e., mentalizing). Studies show that humans can mentalize with non-human agents when they perceive a mind in them (i.e., mind perception). Robots that physically and/or behaviorally resemble humans likely trigger mind perception, which enhances the relevance of social cues and improves social-cognitive performance. The current ex-periments examine whether the effect of physical and behavioral influencers of mind perception on social-cognitive processing is modulated by the lifelikeness of a social interaction. Participants interacted with robots of varying degrees of physical (humanlike vs. robot-like) and behavioral (reliable vs. random) human-likeness while the lifelikeness of a social attention task was manipulated across five experiments. The first four experiments manipulated lifelikeness via the physical realism of the robot images (Study 1 and 2), the biological plausibility of the social signals (Study 3), and the plausibility of the social con-text (Study 4). They showed that humanlike behavior affected social attention whereas appearance affected mind perception ratings. However, when the lifelikeness of the interaction was increased by using videos of a human and a robot sending the social cues in a realistic environment (Study 5), social attention mechanisms were affected both by physical appearance and behavioral features, while mind perception ratings were mainly affected by physical appearance. This indicates that in order to understand the effect of physical and behavioral features on social cognition, paradigms should be used that adequately simulate the lifelikeness of social interactions.


2022 ◽  
Author(s):  
Kendra Leigh Seaman ◽  
Alexander P. Christensen ◽  
Katherine Senn ◽  
Jessica Cooper ◽  
Brittany Shane Cassidy

Trust is a key component of social interaction. Older adults, however, often exhibit excessive trust relative to younger adults. One explanation is that older adults may learn to trust differently than younger adults. Here, we examine how younger (N=33) and older adults (N=30) learn to trust over time. Participants completed a classic iterative trust game with three partners. Younger and older adults shared similar amounts but differed in how they shared money. Compared to younger adults, older adults invested more with untrustworthy partners and less with trustworthy partners. As a group, older adults displayed less learning than younger adults. However, computational modeling shows that this is because older adults are more likely to forget what they have learned over time. Model-based fMRI analyses revealed several age-related differences in neural processing. Younger adults showed prediction error signals in social processing areas while older adults showed over-recruitment of several cortical areas. Collectively, these findings suggest that older adults attend to and learn from social cues differently from younger adults.


2019 ◽  
Vol 14 (2) ◽  
pp. 174-190 ◽  
Author(s):  
April Rose Panganiban ◽  
Gerald Matthews ◽  
Michael D. Long

Human–Machine teaming is a very near term standard for many occupational settings and still requires considerations for the design of autonomous teammates (ATs). Transparency of system processes is important for human–machine interaction and reliance but standards for its implementation are still being explored. Embedding social cues is a potential design approach, which may capture the social benefits of a team environment, yet vary with task setting. The current study examined the manipulation of transparency of benevolent intent from an AT within a piloting task requiring suppression of enemy defenses. Specifically, the benevolent AT maintained task communication as in a neutral condition, but included messages of support and awareness of errors. Benevolent communication reduced reported workload and increased reported team collaboration, indicating that this team intent was beneficial. In addition, trust and acceptance of the AT were rated higher by individuals tasked with depending on the system to protect them from missile threats. The need for information from ATs is beneficial, however may vary depending on team type.


Author(s):  
Samuel Ekung ◽  
James Effiong

Strategy to construction stakeholders’ engagement in Nigeria is anchored on environmental impact assessment (EIA) law. While EIA is conducted only in large projects, every project continues to witness one form of opposition or another from the community stakeholders. This study examined social impact assessment’s (SIA) procedures as a scaffold to mapping framework for construction stakeholders’ engagement. The objectives were to examine problems associated with the implementation of EIA which hitherto ought to address the social risk triggers in project delivery and to develop a framework embedded in SIA for construction stakeholders’ engagement in Nigeria. The study engaged a sample of 46 respondents comprising project managers, environmental management experts and community stakeholders in Akwa Ibom State, Nigeria in a qualitative structured interviewing. Collected data were sorted and analysed. The study reveals extant approach to stakeholders’ management failed as a result of low social context and impact mitigation are based on monetary incentives whereas there are relevant urgent needs to be satisfied. A framework integrating SIA procedures and construction stakeholder engagement strategy was also developed based on the peculiarity of the industry needs. The implication is that construction stakeholders’ management must be structured on satisfying real needs of the citizenry.


2020 ◽  
Vol 123 ◽  
pp. 87-101
Author(s):  
Grega Strban ◽  
Sara Bagari

There have always been people who cannot take care of their daily needs and are reliant on care. However, due to higher life expectancy and low birth rates, changes in lifestyle and increased mobility, reliance on long-term care is becoming a general risk in life. Therefore, it must be provided with social protection. In this respect, the criteria for shaping the (new) social risk of reliance on long-term care are also fulfilled. Although different benefits are already provided within different parts of the social security system, the paper discusses that the best option is to define reliance on long-term care as an independent social risk. Furthermore, we must ensure that providing long-term care will not turn out to be a double social risk. The issue has to be addressed at the national and at the EU level.


2021 ◽  
Vol 06 (04(01)) ◽  
pp. 72-77
Author(s):  
Iryna Kolosovska Iryna Kolosovska ◽  
Radosław Zagórski Radosław Zagórski

This article conceptualizes modern approaches to the transformation of the social function of the state in the context of the influence of globalization processes, the ambiguity of the formation of the socio-cultural context, the actualization of the latest risks and threats associated with the spread of the COVID-19 pandemic. We accentuate the inconsistencies and contradictions between the declared social priorities and the inefficiency of the management mechanisms of their practical implementation. The article substantiates the priority directions of the regulatory role of the state in the context of social risk management, formation of social security, adherence to the principle of social justice, and harmonization of interests of representatives of various social groups. Key words: public administration, state, social functions, governance mechanisms, globalization, social risks, COVID-19 pandemic, social justice.


2019 ◽  
Vol 1 (1) ◽  
pp. 835-842
Author(s):  
Roman Garbiec

AbstractSocial risks are an unusual type of risks occurring in insurance. Their specific feature is the implementation of risk in the sphere of social life of a person with special regard to the work environment. Social risks are an element of research in economics and law and in social policy. The author of the paper shows that the structure of the Polish social insurance system is not optimal and requires radical reform. This paper contains, among others, characteristics of the scope of protection of social risks identified in Poland by Social Security Administration and the basis for financing benefits from this system. The summary of the paper presents opinions on improving the financial efficiency of this system.


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