Lottery- and survey-based risk attitudes linked through a multichoice elicitation task

We analyze the results from three different risk attitude elicitation methods. First, the broadly used test by Holt and Laury (2002), HL, second, the lottery-panel task by Sabater-Grande and Georgantzis (2002), SG, and third, responses to a survey question on self-assessment of general attitude towards risk (Dohmen et al. 2011). The first and the second task are implemented with real monetary incentives, while the third concerns all domains in life in general. Like in previous studies, the correlation of decisions across tasks is low and usually statistically non-significant. However, when we consider only subjects whose behavior across the panels of the SG task is compatible with constant relative risk aversion (CRRA), the correlation between HL and self-assessed risk attitude becomes significant. Furthermore, the correlation between HL and SG also increases for CRRA-compatible subjects, although it remains statistically non-significant.     

t-Designs associated with non degenerate conics in a Galois plane of odd order

Some t-designs in a Galois plane of odd order are constructed by means of sets of points lying on a non degenerate conic and on the sides of suitable self-conjugate triangles.     

A new approach to stock price modelling and the efficiency of the Italian stock exchange

In this paper, we propose a new model of asset prices which takes account of the investment strategies of three different kinds of agents: the market-makers, who operate rationally on the basis of the asset fundamentals, the smart buy-and-sell agents, who intervene when the prices reach particular levels and the non-smart buy-and-sell agents, who trade infrequently, mainly following psychological motivations. The different behavior of these groups of agents can determine temporary inefficiences on financial markets and we show that, by considering these inefficiences, it is possible to improve forecasting of asset prices.     

Trade Union Action and Privatisation in Western Europe: Recent Dilemmas*

Abstract. The Author examines the policies of privatisation in Western Europe and the responses made by trade unions. Privatisation seems to induce the trade union movement to shift its emphasis from traditional issues toward new and challenging ones, such as a major co-operation in the management of the privatised companies. Therein, the extension of interest and control by the unions into new areas such as investment, planning, work organisation and design constitute a challenge to trade union core mandate. In some union circles there are fears about unions embracing what appear to be managerial strategies in a period of deep transformation and turbulence. Moreover, according to some union leaders any attempt by the unions to go beyond the “oppositional and defensive role” would result in a confusion and misrepresentation of their members' interests.     

Ergonomics and design for sustainability in healthcare: ambient assisted living and the social-environmental impact of patients lifestyle

This work presents considerations on Ergonomics and Design for Sustainability in the healthcare field based on research experiences of the Technology and Design for Healthcare (TeDH) research group of INDACO (Industrial design, communication, arts and fashion) department of Politecnico di Milano. In order to develop a multidisciplinary approach to design able to answer to specific user needs such as elderly in an environmental sustainable way (1) this paper shows the results we achieved concerning ergonomics and environmental impact in product development (2), the extension of this approach to interior and home design and the advantage of the application of Information Communication Technologies (ICT). ICT can help people with special needs to make their everyday life easier and more safe, at the same time, ICT can make social-environmental impact of everyday behavior evident and can be applied to manage sustainability. The specific theme is thus to integrate ergonomics and sustainability competences in the development of Ambient Assisted Living through a Product- Service System approach. The concept of product service system has the potential to improve product performances and services, establish new relations and networks with different actors in order to satisfy user needs and apply a systems approach considering environmental, social and economic factors in the users' environment.     

Study of the association between gait variability and physical activity

Background

Gait variability can be considered an indirect measure of gait stability, in particular regarding temporal or spatial variability assessment. Physical activity, such as walking, is advised for the elderly and can be improved by gait stability. The aim of this study was to investigate the associations between gait stability and physical activity in women of different age ranges.

Methods

Forty-two healthy women of different age ranges (18-40 yrs. and 65-75 yrs.) were recruited in the study. To assess physical activity, the subjects wore a multi-sensor activity monitor for a whole week, inferring the time spent in moderate to vigorous physical activity (MVPA). MVPA were analysed in bouts of at least 10 subsequent minutes (MVPA_bouts) and in overall minutes (MVPA_tot). A kinematic analysis was performed with an optoelectronic system to calculate gait variability - expressed as standard deviation (SD) and coefficient of variability (CV) of step width, stride length, stance and swing time (during treadmill walking at different speeds).

Results

Elderly women, with high walking speed (5 km/h), and moderate step width variability (CV = 8–27%), met the recommended levels of physical activity (MVPA_tot and MVPA_bouts). Furthermore, gait variability, adjusted for age and number of falls, was significantly and negatively associated with MVPA_tot only at 3.5 km/h, and with MVPA_bouts only at 4 km/h.

Conclusions

In a population of healthy elderly women, gait variability was significantly and negatively associated with the level of physical activity. Healthy elderly women, with moderate gait variability (step width variability), and high preferred walking speed, seem to be able to meet the recommended levels of physical activity.

     

Labor market institutions and demographic employment patterns

We study collective bargaining’s effect on relative employment for youth, women, and older individuals. Our model of collective wage setting predicts that unionization reduces employment more for groups with relatively elastic labor supply: youth, older individuals, and women. We test this implication using data from 17 Organization for Economic Cooperation and Development (OECD) countries over the 1960–1996 period. We find that time-varying indicators of unionization decrease the employment–population ratio of young and older individuals relative to the prime-aged, and of prime-aged women relative to prime-aged men, and unionization raises the unemployment rate of prime-aged women and, possibly, young men compared to prime-aged men.

My parents taught Me. Evidence on the family transmission of values

The paper uses questions included in the 2010 wave of the Bank of Italy’s Survey on Household Income and Wealth to investigate the role of family transmission of values. It presents three main empirical findings. First, the paper shows that a number of attitudes (generalized and personalized trusting behaviour, risk and time preferences) and outcomes (female labour force participation, fertility, entrepreneurship, productivity) are associated with the values received. Second, it documents that values received from parents are correlated with the values transmitted to descendants. Third, by using respondent moving patterns, the paper highlights that values received are slowly changing even after a discontinuity in the reference environment. Comparisons between first- and second-generation movers suggest that what matters for breaking the family chains are the formative years, when young people somehow strike a balance between the values transmitted by their parents and what they experience in the (possibly different) environment where they grow up.     

Global movement dilemmas: transnational representation and impact in the World Social Forum

ABSTRACT

Various social movement debates on organizational design have hinged on the possibility and political usefulness of devising post-representational, a-representational or anti-representational spaces. We analyse organizational options and obstacles that the WSF faces. A denial of representational dynamics may leave internal power and structural imbalances unattended. We raise the question whether the WSF process can intersect the current instances of activism across the planet including the climate justice movement. We explore its changing attitudes toward representational decision-making. Finally, we suggest that the relationship between traditional organization-building and internet-mediated decision-making practices developing at the intersection between the local, the global and the virtual could be debated on the road to the next global WSF, likely to take place in Mexico.     

The epigenomic self in personalized medicine: between responsibility and empowerment

This paper focuses on two areas of innovation currently articulating the agenda of personalized medicine (PM): the discourse of empowerment in health-care reforms and the rise of molecular epigenomics. We align these two developments as discursive and technical resources, focusing on their nascent interplay in shaping alternative sociotechnical imaginaries of PM. Our work aims at inaugurating an intellectual programme on the distinct futures of policy- and identity-making that are being catalysed around epigenomic technoscience, as well as to provide an operational map of its potential synergies with pre-existing socio-political discourses of empowerment in PM. This roadmap advances our understanding of how the intersection of epigenomics with dominant policy discourses becomes a resource to shape roles and obligations of citizens, patients and health-care actors in the emergence of PM.