Does probability weighting matter in probability elicitation?

One of the most widely used methods for probability encoding in decision analysis uses binary comparisons (choices) between two lotteries: one that depends on the values of the random variable of interest and another that is contingent on an external reference chance device (typically a probability wheel). This note investigates the degree to which differences in probability weighting functions between the two types of events could affect the practice of subjective probability encoding. We develop a general methodology to investigate this question and illustrate it with two popular probability weighting functions over the range of parameters reported in the literature. We use this methodology to (a) alert decision analysts and researchers to the possibility of reversals, (b) identify the circumstances under which overt preferences for one lottery over the other are not affected by the weighting function, (c) document the magnitude of the differences between choices based on probabilities and their corresponding weighting functions, and (d) offer practical recommendations for probability elicitation.     

Depression symptoms among Omani children: age and sex differences

The present study explored the existence of depressive symptoms among Omani children according to sex and age. The Arabic translated version of the Multidimensional Child and Adolescent Depression Scale was administered to 1,749 children (828 boys, 921 girls) ranging in age from 10 to 18 years old (M= 13.9, SD = 2.3) from 10 schools representing different areas of Muscat, Oman. The results showed no differences in the total mean scores on depression between boys and girls, although differences were observed on 4 of the 8 subscales. Boys had significantly higher scores on Weak concentration and Loneliness, while girls scored higher for Sleep problems and Anhedonia. Significant differences across ages also were exhibited for the total score as well as four subscales (Pessimism, Weak concentration, Anhedonia, and Fatigue), suggesting higher rates of depression among 15- to 18-year-olds.     

Who Voted for Whom? Comparing Supporters of Obama and McCain on Value Types and Personality Traits

This study investigates the personalities and values of Obama and McCain supporters in the 2008 election. A total of 278 American participants completed the Big Five Inventory and the Portrait Values Questionnaire along with demographic items. For value types, Obama supporters were more likely to endorse universalism values and less likely to endorse tradition, conformity, and security values compared with McCain supporters. With regard to personality traits, Obama supporters scored higher on agreeableness and lower on conscientiousness than did McCain supporters. As predicted, logistic regression revealed that values were better predictors of voting preference than were personality traits. These findings demonstrate the importance of individual differences in political preferences and are discussed with regard to findings in other cultures.     

Developing and Testing a Spiritual Care Questionnaire in the Iranian Context

As most research exploring nurses?? perceptions on the topic of spiritual care was conducted in Western countries, these findings may not be applicable in Iran because of cultural and health system differences. Therefore, a new survey instrument was developed for the Iranian context. The study was conducted in two steps: (1) development and validation of items for perception scale and (2) distribution of the questionnaire among nursing students to determine scale reliability and construct validity. The preliminary scale consisted of 50 items designed to measure the participants?? perception of spiritual care. Construct validity of the scale was examined on the remaining 33 items. On interpretation of the items, the following four components were identified: (1) meeting patient as a being in meaning and hope, (2) meeting patient as a being in relationship, (3) meeting patient as a religious being, and (4) meeting patients as a being with autonomy. The results in this paper showed that preserving dignity in the nurses?? practice meant getting involved in interpersonal caring relationships, with respect for the involved peoples?? religious beliefs and their autonomy. Proper education and professionally led supervision with reflection on past and recent experiences may develop student nurses?? and nurses?? perceptions as well as their attitudes toward spiritual care and to achieve a realistic view of the profession.     

Co-morbid pain conditions and feelings of invalidation and isolation among women with vulvodynia

Many women with vulvodynia also suffer from other chronic co-morbid pain conditions. Alone, these pain conditions are associated with feeling invalidated by others and feeling socially isolated. It is unclear, however, how the presence of additional pain co-morbidities are associated with the psychosocial wellbeing of women with vulvodynia. We used data from a survey administered by the National Vulvodynia Association. Women reported clinician-diagnosed vulvodynia, presence of co-morbid pain, and how often they felt that they felt no one believed their pain existed (invalidated) and isolated. Analyses determined prevalence of feeling invalidated or isolated, and the difference in prevalence when co-morbidities existed. Forty-five percent of these 1847 women with vulvodynia reported having at least one of the following five chronic pain conditions, chronic fatigue syndrome, endometriosis, fibromyalgia, interstitial cystitis, or irritable bowel syndrome. Adjusted baseline prevalence among all women of feeling invalidated was 9% and of feeling isolated was 14%. Having a co-morbid condition with vulvodynia, as well as having an increasing number of co-morbid conditions with vulvodynia, was significantly associated with the presence of feeling both invalidated and isolated. Chronic fatigue syndrome was the co-morbidity most strongly associated with feelings invalidation and isolation. One or more co-morbid pain conditions in addition to vulvodynia were significantly associated with psychosocial wellbeing. However, the temporality of the association could not be elucidated and therefore we cannot conclude that these pain conditions cause poor psychosocial wellbeing. Despite this, future studies should explore the utility of promoting validation of women's pain conditions and reducing social isolation for women with chronic pain.     

Effects of Developmental Task Constraints on Kinematic Synergies during Catching in Children with Developmental Delays

Abstract

The aim of this study was to examine effects of a task intervention on kinematic synergies in catching. Participants were young children (5.58?±?0.52?years) with the lowest scores on two-hand catching, according to assessments with the Test of Gross Motor Development-2 (TGMD-2) and were allocated into two groups. The constraints group took part in an 8-week intervention, whereas the control group experienced a typical physical education. Both groups were assessed with motor development and kinematic coordination measures with a catching task with a ball thrown from 2?m distance. Kinematic variables were recorded using a wireless motion capture system. A principal component analysis (PCA) was used to measure the kinematic synergies formed among active body parts. Two synergies that emerged in catching were mainly utilised for “reaching” and “catching” the ball. The control group tended to re-organise the majority of active body parts into two functional units in all phases, whereas the constraints group adapted their active parts into functional units according to the requirement of the novel movement in the transfer task. The findings of this study suggested that task constraints could facilitate object control by re-organisation of active body parts into functional synergies to achieve successful performance.