Risk aversion in expected intertemporal discounted utilities bandit problems

We consider a situation where an individual is facing an uncertain situation, but may costly alter his knowledge of the uncertainties. We study in this context how risk aversion may modify the individual search behavior. We consider a one-armed bandit problem (where one arm is safe and the other is risky) and study how the agent risk aversion can change the sequence of arms selected. The main result is that when the utility function is more concave, the agent has more chances to select the safe arm. We also discuss how search is affected by risk aversion.     

The Effect of Grandparental Support on Mothers’ Labour Market Participation: An Instrumental Variable Approach

Childcare arrangements are key in women’s ability to juggle motherhood and work outside the home. As such, the study of access to childcare and its use is of great policy relevance. We focus on a particular kind of informal childcare, the one provided by grandparents. Empirically, assessing the effect of grandparental childcare is not an easy task due to unobserved preferences. In light of the potential outcome framework, we interpret the biases resulting from unobserved preferences as arising from the non-compliance of mothers to the availability of grandparents and from preferences of grandparents for activities other than childcare. Using an instrumental variable approach on Italian data, we find that the effect of grandparental childcare on mothers’ labour supply is positive, statistically significant and economically relevant. The effect is stronger for less educated mothers, with young children and living in northern and central Italy.     

The Use of Risk Assessment to Decide the Control Strategy for Bluetongue in Italian Ruminant Populations

The affiliation, assessment and management of risks is a traditional part of veterinary medicine. In the past, veterinary services involved in this type of activity usually assessed risks qualitatively. However, since the 1990s, quantitative methods have become increasingly important. The establishment of the World Trade Organization in 1994, and the promulgation of its Agreement on the Application of Sanitary and Phytosanitary Measures (the "SPS Agreement") led to an increased application of import risk analysis and to significant improvements in the methodology of risk analysis as applied to international trade policy for animals and animal products. However, there was very little development of risk analysis in veterinary fields other than international trade and management of health risks to consumers of animal products and little has been published on its use in the choice and definition of control or prophylaxis strategies for animal diseases. This article describes a quantitative risk assessment, which was undertaken in Italy to help choose an appropriate national response strategy following an incursion of bluetongue, an infectious disease of sheep and goats. The results obtained in this study support the use of risk analysis as a tool to assist in choosing an appropriate animal disease management strategy. The use of risk analysis in the evaluation of disease management strategies also offers advantages in international trade. It makes easier the comparison of different strategies applied in the various countries, and thus facilitates the assessment of equivalence of the guarantees provided by different strategies.     

Psychological abuse in Spanish same-sex couples: prevalence and relationship between victims and perpetrators

This study investigates the prevalence of psychological abuse victimization in same-sex couples and the relationship between being a victim and a perpetrator of these negative behaviours. The final sample consisted of 107 adults residing in Spain who identified themselves as lesbian women and gay men, and who had been involved in a conflictive same-sex relationship. Participants were asked how frequently they would label their experience of psychological abuse and three different estimation methods were used. Furthermore, the relationship between being a victim and being a perpetrator of psychological abuse behaviours was calculated through the behavioural estimation method using a questionnaire. The results showed that the prevalence rates varied from 11.3% to 56.6%, depending on the estimation method, and they revealed that there was no correlation between receiving and enacting psychological abuse behaviours. The variation in prevalence rates highlights methodological differences that limit the extent to which comparisons can be made across studies. Three estimation methods are introduced to stimulate future research on this issue.     

Abusing victims: detention of child sexual abuse victims in secure accommodation

Sexually abused children and adolescents, in limbo between revelation of abuse and trial of an alleged offender, or in emotional turmoil after such abuse, need special care and support. Evidence indicates that a number of such children are held in local authority secure centres, on various grounds: to protect them from further sexual assaults by an adult offender; because of their persistent absconding from non-secure residential centres; and because of their disturbed behaviour (including suicidal behaviours), which may have been caused by the assault. Victims of sexual abuse are held with juveniles on remand for serious crimes (including rape and murder), or (because they are too young for youth detention centres) with young adolescents who are held in detention following conviction for such crimes. Evidence is produced from case histories, and from a survey of 15 of the 27 secure detention centres for children and young people in England, that the mix of abused, disturbed and very aggressive children is highly problematic. In worst case scenarios, victims of child sexual abuse are sexually assaulted by juvenile rapists with whom they are housed. © 1998 John Wiley & Sons, Ltd.     

TRUCE for advocacy and peer education in tobacco prevention

In response to aggressive marketing of tobacco to college students, Florida's legislature allocated multi-settlement agreement dollars to fund tobacco prevention programming at state institutions of higher learning. The Student Tobacco Reform Initiative: Knowledge for Eternity (STRIKE) was one such program. Its purpose was to increase awareness and support college student advocacy for prevention. In this program note, we introduce Targeting, Resource Identification, and Unification for College Peer Education (TRUCE), the strategy used to facilitate implementation of STRIKE tobacco prevention programming by student advocates at a metropolitan university campus.     

Does Weighting Capture What’s Important? Revisiting Subjective Importance Weighting with a Quality of Life Measure

The present study evaluated subjective importance weighting using data collected with the Injection Drug User Quality of Life Scale (IDUQOL). Weighted and unweighted IDUQOL scores from 241 adults were correlated with convergent, discriminant, and criterion measures. Regression analysis was used to examine the contribution of importance ratings to scores on a global measure of life satisfaction and the corrected weighted IDUQOL total scores. Overall, the results showed that weighted scores did not perform better than unweighted scores in measuring quality of life. However, the mean satisfaction ratings for important domains correlated significantly higher with convergent measures than did the mean satisfaction ratings for unimportant domains. This finding suggests further attention needs to be paid to the meaning and measurement of subjective importance and how it may be incorporated more effectively into measures of quality of life.     

Selection of a voice for a speech signal for personalized warnings: the effect of speaker's gender and voice pitch

There is an increasing interest in multimodal technology-based warnings, namely those conveying speech-warning statements. This type of warning may be tailored to the situation as well as to the target user's characteristics. However, more information is needed on how to design these warnings in a way that ensures intelligibility, promotes compliance and reduces the potential for annoyance. In this context, this paper reports an exploratory study whose main purpose was to assist the selection of a synthesized voice for a subsequent compliance study with personalized (i.e., using the person's name) technology-based warnings using Virtual Reality. Participants were requested to listen to speech signals, gathered from a speech synthesizer and post-processed in order to change the pitch perception, and then these were evaluated by fulfilling the MOS-X questionnaire. After that, the participants ranked the voices according to their preference. The effects of the speaker's gender and voice pitch, on both ratings and ranking were assessed. The preference of the male and female listeners for a talker's voice gender was also investigated. The results show that participants mostly prefer as first choice the high-pitched female voice, which also gathered the highest overall score in the MOS-X questionnaire. No significant influence of the participants' gender was found on the assessed measures.     

Stimulus-Stimulus Pairing of Vocalizations: A Systematic Replication

The current study replicated an enhanced stimulus-stimulus pairing (SSP) procedure used by Esch et al. (Journal of Applied Behavior Analysis 42: 42–225, 2009) for increasing vocalizations in children with autism. The enhanced SSP procedure consisted of pairing target vocalizations with high-preference items, interspersed target and nontarget trials, an observing response, and the presentation of the vocalizations in “motherese” speech. Results showed substantial increases in target vocalizations above baseline levels and above nontarget vocalizations for two of three participants.