Leadership capacity in teams

The present article examines the state of the field regarding leadership in teams. A perspective is advanced that considers leadership as an outcome of team processes (e.g., teamwork and team learning) that provides resources for better team adaptation and performance in subsequent performance cycles. This perspective complements but does not replace the perspective of leadership as an input to team processes and performance. Specific facets of the teaming cycle are reviewed, including the nature of teamwork and interventions designed to facilitate its development, the role of team learning as different from individual learning, and relatively recent advances in understanding shared and distributed leadership (DL). These components of team leadership are cast within an emerging IMOI (inputs, mediators, outcomes, inputs) framework proposed for understanding the cyclical and ongoing nature of teams in organizations.     

THE ROLE OF SOCIAL WORK NORMS IN JOB SEARCHING AND SUBJECTIVE WELL‐BEING

Social norms are usually neglected in economics, because they are to a large extent enforced through nonmarket interactions and difficult to isolate empirically. In this paper, we offer a direct measure of the social norm to work and we show that this norm has important economic effects. The stronger the norm, the more quickly unemployed people find a new job. This behavior can be explained by utility differences, probably due to social pressure. Unemployed people are significantly less happy than employed people and their reduction in life satisfaction is the larger, the stronger the norm is. (JEL: I31, J64)     

Restarting “Normal” Life after Covid-19 and the Lockdown: Evidence from Spain,the United Kingdom,and Italy

Social Indicators Research - In this article, we examine the expectations of the economic outlook, fear of the future, and behavioural change during the first Covid-19 wave, for three European...     

Spanish Validation of the Emotion Regulation Questionnaire for Children and Adolescents (ERQ‐CA): Introducing the ERQ‐SpA

Research on emotion regulation is now extensive and shows the benefits of the adaptive management of emotions for social functioning and psychological well‐being. Our purpose was to test the psychometric properties of the Emotion Regulation Questionnaire for Children and Adolescents with a sample of nonclinical Spanish adolescents. A total of 462 secondary education students (223 girls, mean age = 13.89 years, SD = 1.38) participated. The instrument proved to be two‐factor and gender‐invariant. Results revealed the temporal stability of both emotion regulation strategies, while the predictive validity study revealed that depressive symptoms were negatively related to cognitive reappraisal, and positively related to expressive suppression. Our findings support the use of the ERQ‐SpA in Spanish adolescents.     

Divorce and the business cycle: a cross-country analysis

In this paper, we examine the role of the business cycle in divorce. To do so, we use a panel of 29 European countries covering the period from 1991 to 2012. We find the unemployment rate negatively affects the divorce rate, pointing to a pro-cyclical evolution of the divorce rate, even after controlling for socio-economic variables and unobservable characteristics that can vary by country, and/or over time. Results indicate that a one-percentage-point increase in the unemployment rate involves almost 0.025 fewer divorces per thousand inhabitants. The impact is small, representing around 1.2 % of the average divorce rate in Europe during the period considered. Supplementary analysis, developed to explore a possible non-linear pattern, confirms a negative relationship between unemployment and divorce in European countries, with the inverse relationship being more pronounced in those countries with higher divorce rates.     

Coherent Hypothesis Testing

Multiple hypothesis testing, an important quantitative tool to report the results of scientific inquiries, frequently leads to contradictory conclusions. For instance, in an analysis of variance (ANOVA) setting, the same dataset can lead one to reject the equality of two means, say μ₁ = μ₂, but at the same time to not reject the hypothesis that μ₁ = μ₂ = 0. These two conclusions violate the coherence principle introduced by Gabriel in 1969 Gabriel, K. R. (1969), “Simultaneous Test Procedures - Some Theory of Multiple Comparisons,” The Annals of Mathematical Statistics, 40, 224–250. Available at http://www.jstor.org/stable/2239213[Crossref] , [Google Scholar], and lead to results that are difficult to communicate, and, many times, embarrassing for practitioners of statistical methods. Although this situation is common in the daily life of statisticians, it is usually not discussed in courses of statistics. In this work, we enrich the teaching and discussion of this important topic by investigating through a few examples whether several standard test procedures are coherent or not. We also discuss the relationship between coherent tests and measures of support. Finally, we show how a Bayesian decision-theoretical framework can be used to build coherent tests. These approaches to coherence enlighten when such property is appealing in multiple testing and provide means of obtaining it.     

Comparison of bootstrap estimation intervals to forecast arithmetic mean and median air passenger demand

The aim of this paper is to compare passenger (pax) demand between airports based on the arithmetic mean (MPD) and the median pax demand (MePD). A three phases approach is applied. First phase, we use bootstrap procedures to estimate the distribution of the arithmetic MPD and the MePD for each block of routes distance; second phase, we use percentile, standard, bias corrected, and bias corrected accelerated methods to calculate bootstrap confidence bands for the MPD and the MePD; and third phase, we implement Monte Carlo (MC) experiments to analyse the finite sample performance of the applied bootstrap. Our results conclude that it is more meaningful to use the estimation of MePD rather than the estimation of MPD in the air transport industry. By carrying out MC experiments, we demonstrate that the bootstrap methods produce coverages close to the nominal for the MPD and the MePD.     

The <Emphasis Type="Italic">k</Emphasis>-hop connected dominating set problem: approximation and hardness

Let G be a connected graph and k be a positive integer. A vertex subset D of G is a k-hop connected dominating set if the subgraph of G induced by D is connected, and for every vertex v in G there is a vertex u in D such that the distance between v and u in G is at most k. We study the problem of finding a minimum k-hop connected dominating set of a graph (\({\textsc {Min}}k{\hbox {-}\textsc {CDS}}\)). We prove that \({\textsc {Min}}k{\hbox {-}\textsc {CDS}}\) is \(\mathscr {NP}\)-hard on planar bipartite graphs of maximum degree 4. We also prove that \({\textsc {Min}}k{\hbox {-}\textsc {CDS}}\) is \(\mathscr {APX}\)-complete on bipartite graphs of maximum degree 4. We present inapproximability thresholds for \({\textsc {Min}}k{\hbox {-}\textsc {CDS}}\) on bipartite and on (1, 2)-split graphs. Interestingly, one of these thresholds is a parameter of the input graph which is not a function of its number of vertices. We also discuss the complexity of computing this graph parameter. On the positive side, we show an approximation algorithm for \({\textsc {Min}}k{\hbox {-}\textsc {CDS}}\). Finally, when \(k=1\), we present two new approximation algorithms for the weighted version of the problem restricted to graphs with a polynomially bounded number of minimal separators.     

Case management for people with psychiatric disabilities in rural Sweden; experiences from the implementation of a national policy

The aim is to analyse the implementation of a case manager-model in rural Sweden. A sample of 15 case management teams was selected. Written materials were collected and interviews on location were carried out. Results: rural case managers design their work methods themselves, which entail several deviations from the national policy guidelines in this field. The case management boards have a low capacity to direct and manage the activities of the case managers. Consequently, case managers develop into ‘welfare entrepreneurs’. One salient risk is that teams become isolated from the surrounding welfare system. In conclusion, the Swedish version of case management in rural areas is a result of local processes of adaptation and negotiation that result in services that differ from those envisaged in national policy guidelines.