scholarly journals Sexual harassment induces a temporary fitness cost but does not constrain the acquisition of environmental information in fruit flies

2016 ◽  
Vol 12 (1) ◽  
pp. 20150917 ◽  
Author(s):  
Serafino Teseo ◽  
Liisa Veerus ◽  
Céline Moreno ◽  
Frédéric Mery
Keyword(s):  
Sexual Harassment ◽  
Social Contexts ◽  
Fruit Flies ◽  
Environmental Information ◽  
Learning Processes ◽  
Fitness Cost ◽  
Fitness Costs ◽  
Sexual Conflicts ◽  
Fitness Benefits ◽  
The Relationship

Across animals, sexual harassment induces fitness costs for females and males. However, little is known about the cognitive costs involved, i.e. whether it constrains learning processes, which could ultimately affect an individual's fitness. Here we evaluate the acquisition of environmental information in groups of fruit flies challenged with various levels of male sexual harassment. We show that, although high sexual harassment induces a temporary fitness cost for females, all fly groups of both sexes exhibit similar levels of learning. This suggests that, in fruit flies, the fitness benefits of acquiring environmental information are not affected by the fitness costs of sexual harassment, and that selection may favour cognition even in unfavourable social contexts. Our study provides novel insights into the relationship between sexual conflicts and cognition and the evolution of female counterstrategies against male sexual harassment.

Adolescent Sexual Harassment, Shame, and Depression: Do Experiences of Witnessing Harassment Matter?

2019 ◽  
Vol 40 (5) ◽  
pp. 712-737 ◽  
Author(s):  
Joyce Li ◽  
Wendy M. Craig
Keyword(s):  
Depressive Symptoms ◽  
Sexual Harassment ◽  
Indirect Effect ◽  
Social Contexts ◽  
School Students ◽  
Cross Sectional ◽  
Preliminary Study ◽  
Conditional Indirect Effects ◽  
Responses To Sexual Harassment ◽  
The Relationship

This preliminary study explored a person-group dissimilarity hypothesis in the context of adolescent sexual harassment. Theory suggests that victimized youth are expected to experience worse outcomes if they perceive victimization to be a rare experience among their peers. This study comprised 435 middle school students who reported on their experiences of sexual harassment (victimization and witnessing), shame, and depressive symptoms. We tested a cross-sectional conditional indirect-effects model, with shame mediating the relationship between victimization and depressive symptoms (the indirect effect) and with witnessing as a moderator of the indirect effect. For all students, shame mediated the relationship between victimization and depressive symptoms. For female students, there was a buffering effect of witnessing, whereby the indirect effect was weaker at high levels of witnessing. These findings have potential implications for theory and intervention, suggesting the importance of examining young people’s social contexts to better understand their responses to sexual harassment.

scholarly journals Fitness of Herbicide-Resistant Weeds: Current Knowledge and Implications for Management

Plants ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 469 ◽  
Author(s):  
Vila-Aiub
Keyword(s):  
Life History ◽  
Herbicide Resistance ◽  
Management Practices ◽  
Current Knowledge ◽  
Resistance Management ◽  
Fitness Cost ◽  
Plant Fitness ◽  
Resistance Mutations ◽  
Fitness Costs ◽  
Wide Range

Herbicide resistance is the ultimate evidence of the extraordinary capacity of weeds to evolve under stressful conditions. Despite the extraordinary plant fitness advantage endowed by herbicide resistance mutations in agroecosystems under herbicide selection, resistance mutations are predicted to exhibit an adaptation cost (i.e., fitness cost), relative to the susceptible wild-type, in herbicide untreated conditions. Fitness costs associated with herbicide resistance mutations are not universal and their expression depends on the particular mutation, genetic background, dominance of the fitness cost, and environmental conditions. The detrimental effects of herbicide resistance mutations on plant fitness may arise as a direct impact on fitness-related traits and/or coevolution with changes in other life history traits that ultimately may lead to fitness costs under particular ecological conditions. This brings the idea that a “lower adaptive value” of herbicide resistance mutations represents an opportunity for the design of resistance management practices that could minimize the evolution of herbicide resistance. It is evident that the challenge for weed management practices aiming to control, minimize, or even reverse the frequency of resistance mutations in the agricultural landscape is to “create” those agroecological conditions that could expose, exploit, and exacerbate those life history and/or fitness traits affecting the evolution of herbicide resistance mutations. Ideally, resistance management should implement a wide range of cultural practices leading to environmentally mediated fitness costs associated with herbicide resistance mutations.

scholarly journals Fitness Costs of Chlorantraniliprole Resistance Related to the SeNPF Overexpression in the Spodoptera exigua (Lepidoptera: Noctuidae)

2021 ◽  
Vol 22 (9) ◽  
pp. 5027
Author(s):  
Changwei Gong ◽  
Xinge Yao ◽  
Qunfang Yang ◽  
Xuegui Wang ◽  
Yuming Zhang ◽  
...  
Keyword(s):  
Insect Pest ◽  
Ryanodine Receptors ◽  
Oviposition Rate ◽  
Fitness Cost ◽  
Fitness Costs ◽  
Male Adult ◽  
Mating Response ◽  
Transmembrane Segments ◽  
High Level ◽  
Lepidoptera Noctuidae

Spodopteraexigua, a multifeeding insect pest, has developed a high level of resistance to chlorantraniliprole, which is a benzoylurea insecticide that targets the ryanodine receptors (RyRs). Herein, the resistant strain (SE-Sel) and sensitive strain (SE-Sus) were obtained by bidirectional screening for six generations. The potential oviposited eggs and oviposition rate of the SE-Sel strain were dramatically lower than those of the SE-Sus strain; on the contrary, the weights of prepupae and preadult were significantly increased. As a post-mating response, the higher number of non-oviposited eggs in the SE-Sel strain was caused by a lower mating rate. In addition, the expression levels of vitellogenin (SeVg) and its receptor (SeVgR) in the SE-Sel strain were consistently lower than those in the SE-Sus strain. An RyRI4743M mutation, contributing to the resistance to chlorantraniliprole, was located in the S3 transmembrane segments and might have affected the release of calcium ions; it led to the upregulated expression of the neuropeptide SeNPF and its receptor SeNPFR, and the mating and oviposition rate were significantly recovered when the SeNPF was knocked down though RNA interference (RNAi) in the male adult of the SE-Sel strain. Moreover, the expression of the juvenile hormone-binding proteins SeJHBWDS3 and SeJHBAN in the male adult of the SE-Sel strain was significantly decreased, which proved the existence of a fitness cost from another angle. Therefore, these results indicate that the fitness cost accompanied by chlorantraniliprole resistance in S. exigua may be related to the decrease in mating desire due to SeNPF overexpression.

scholarly journals Eating Problems in Autistic Females and Males: A Co-twin Control Study

2021 ◽  
Author(s):  
Karl Lundin Remnélius ◽  
Janina Neufeld ◽  
Johan Isaksson ◽  
Sven Bölte
Keyword(s):  
Autistic Traits ◽  
Social Contexts ◽  
Shared Environment ◽  
Eating Problems ◽  
Autism Diagnosis ◽  
Sensory Sensitivity ◽  
Adult Twins ◽  
The Relationship ◽  
Unmeasured Confounders ◽  
Control Study

AbstractThis study investigated the association between autism and self-reported eating problems and the influence of gender on the association, in a sample of adolescent and adult twins (N = 192). Autistic traits and autism diagnosis were associated with both total and specific eating problems, including selective eating and sensory sensitivity during mealtimes. Interaction effects indicated a stronger association between autistic traits and total eating problems in females, as well as more difficulties with eating in social contexts among autistic females. In within-pair analyses, where unmeasured confounders including genes and shared environment are implicitly controlled for, the association was lost within monozygotic pairs, which might further indicate a genetic influence on the relationship between autism and eating problems.

scholarly journals Calculators as Facilitators of Understanding Computational and Mathematical Contexts

2019 ◽  
Vol 1 (1) ◽  
pp. 177-183
Author(s):  
Jan Guncaga ◽  
Lilla Korenova ◽  
Jozef Hvorecky
Keyword(s):  
Soft Skills ◽  
Real Life ◽  
Theoretical Background ◽  
Learning Processes ◽  
Complex Phenomenon ◽  
Learning To Learn ◽  
Life Problems ◽  
The Subject ◽  
The Relationship

AbstractLearning is a complex phenomenon. Contemporary theories of education underline active participation of learners in their learning processes. One of the key arguments supporting this approach is the learner’s simultaneous and unconscious development of their ability of “learning to learn”. This ability belongs to the soft skills highly valued by employers today.For Mathematics Education, it means that teachers have to go beyond making calculations and memorizing formulas. We have to teach the subject in its social context. When the students start understanding the relationship between real-life problems and the role of numbers and formulas for their solutions, their learning becomes a part of their tacit knowledge. Below we explain the theoretical background of our approach and provide examples of such activities.

A contingency perspective on learning and instruction in physical education

2021 ◽  
pp. 1356336X2098588
Author(s):  
Jonas Wibowo ◽  
Ben Dyson
Keyword(s):  
Physical Education ◽  
Learning Processes ◽  
Methodological Issues ◽  
Unit Of Analysis ◽  
Contingency Perspective ◽  
Two Factors ◽  
The Individual ◽  
Teaching Learning ◽  
The Relationship ◽  
Learning And Instruction

In this article, we focus on the contingency between learning and instruction in physical education (PE). We argue that the complex interconnectedness of teachers’ instruction and students’ learning processes should be studied using a unit of analysis that expresses the relationship between the two factors. A contingency perspective foregrounds the individual differences between different learners and how a teacher regards these differences. Furthermore, it has the potential to provide a precise lens for empirical research on how the students’ situations shape the evolution of the teaching--learning process. Based on scaffolding research and adaptive teaching research, which draws on socio-constructivist foundations, we call this unit of analysis ‘contingency’. We outline a framework of research that suggests depicting contingency dimensions, respective instructional continua, and contingency rules when investigating contingency in PE. Furthermore, autonomy as a core contingency dimension for PE and methodological issues will be discussed.

Participative work design in lean production

2015 ◽  
Vol 27 (1) ◽  
pp. 19-33 ◽  
Author(s):  
Annika Lantz ◽  
Niklas Hansen ◽  
Conny Antoni
Keyword(s):  
Decision Making ◽  
Team Learning ◽  
Lean Production ◽  
Job Design ◽  
Learning Processes ◽  
Management Policy ◽  
Shop Floor ◽  
Content Type ◽  
Proactive Behaviour ◽  
The Relationship

Purpose – The purpose of this paper is to explore job design mechanisms that enhance team proactivity within a lean production system where autonomy is uttermost restricted. We propose and test a model where the team learning process of building shared meaning of work mediates the relationship between team participative decision-making, inter team relations and team proactive behaviour. Design/methodology/approach – The results are based on questionnaires to 417 employees within manufacturing industry (response rate 86 per cent) and managers’ ratings of team proactivity. The research model was tested by mediation analysis on aggregated data (56 teams). Findings – Team learning mediates the relationship between participative decision-making and inter team collaboration on team proactive behaviour. Input from stakeholders in the work flow and partaking in decisions about work, rather than autonomy in carrying out the work, enhance the teams’ proactivity through learning processes. Research limitations/implications – An investigation of the effects of different leadership styles and management policy on proactivity through team-learning processes might shed light on how leadership promotes proactivity, as results support the effects of team participative decision-making – reflecting management policy – on proactivity. Practical implications – Lean production stresses continuous improvements for enhancing efficiency, and such processes rely on individuals and teams that are proactive. Participation in forming the standardization of work is linked to managerial style, which can be changed and developed also within a lean concept. Based on our experiences of implementing the results in the production plant, we discuss what it takes to create and manage participative processes and close collaboration between teams on the shop floor, and other stakeholders such as production support, based on a shared understanding of the work and work processes. Social implications – Learning at the workplace is essential for long-term employability, and for job satisfaction and health. The lean concept is widely spread to both public bodies and enterprises, and it has been shown that it can be linked to increased stress and an increase in workload. Finding the potential for learning within lean production is essential for balancing the need of efficient production and employees’ health and well-being at work. Originality/value – Very few studies have investigated the paradox between lean and teamwork, yet many lean-inspired productions systems have teamwork as a pillar for enhancing effectiveness. A clear distinction between autonomy and participation contributes to the understanding of the links between job design, learning processes and team proactivity.

Learning processes and job satisfaction in the Spanish wine sector

2017 ◽  
Vol 46 (3) ◽  
pp. 624-643
Author(s):  
Alfonso J. Gil ◽  
Mara Mataveli
Keyword(s):  
Job Satisfaction ◽  
Group Learning ◽  
Structural Equations ◽  
Learning Processes ◽  
Organizational Size ◽  
Measurement Scales ◽  
Content Type ◽  
Learning Groups ◽  
Wine Sector ◽  
The Relationship

Purpose The purpose of this paper is to analyse the relationship between learning processes (LP) – group learning (GL) and training processes – and job satisfaction (JS), by taking into consideration the mediating role of organizational size (OZ) and employees’ educational level (EEL). Design/methodology/approach Data were collected from the Spanish wine sector. The survey was addressed to the workers, and 230 valid questionnaires were obtained. The authors have proven their model of research through a model of structural equations, that is, by means of the partial least squares technique. Findings This paper proposes that LP play a significant role in determining the effects on JS, and OZ and EEL mediate the relationship between GL and JS. Research limitations/implications Owing to certain features of the sample and the use of measurement scales, the final results should be considered with caution. Further research in other contexts using qualitative methods is needed to validate these findings. Practical implications When seeking to improve employee JS, practitioners should take into account the link between LP and JS. It is especially necessary to consider the diversity in learning groups. Originality/value This paper provides an empirical analysis of the relationship between LP and JS and checks the mediation of OZ and worker education of workers between group learning and JS.

scholarly journals The Wider Impacts of Universities: Habermas on Learning Processes and Universities

2013 ◽  
Vol 8 (2) ◽  
Author(s):  
Jesper Eckhardt Larsen
Keyword(s):  
Higher Education ◽  
Labor Market ◽  
Comparative Analysis ◽  
Knowledge Economy ◽  
Learning Processes ◽  
The Self ◽  
Societal Impact ◽  
Functionalist Theory ◽  
The University ◽  
The Relationship

The discourse of reform in higher education tends to focus narrowly on employability and the relationship between higher education and the labor market. Universities as research institutions are now considered solely in the dominant discourse of innovation. This way of conceiving universities is inspired by functionalist theory that focuses on the imperatives of a knowledge economy. Taking a departure in the theory of society developed by Jürgen Habermas this paper seeks to provide a theoretical framework for an empirical comparative analysis on the wider societal impact of universities. It is the argument that the wider impacts of higher education and research at universities must be seen in a more complex vision of modern societies. The paper is thus primarily a re-reading of Habermas’ critique of functionalist views of the university and an application of Habermas’ critique on current issues in the debates on higher education. A special discussion will be taken on issues of the self in view of the current tendencies to regard all education from the standpoint of the economic outputs.

Sign in / Sign up

Export Citation Format

Share Document