The Earned Income Tax Credit and Rural Families: Differences between Participants and Non-participants

The differences between rural low-income mothers who were participants and non-participants in the Earned Income Tax Credit (EITC) were examined. One-third of the 224 eligible mothers in a multi-state study did not claim the tax credit. Non-participants were more likely to be Hispanic, less educated, with larger families, borrowing money from family, and living in more rural counties. Participating mothers, on the other hand, were more food secure, perceived their household income as being adequate, reported recent improvements in their economic situation, were satisfied with life, and lived in states with a state EITC. Analysis of qualitative data revealed that rural mothers had many misconceptions about the EITC. These findings contribute to family and economic professionals’ understanding of why rural low-income families do not participate in the tax credit and assist in formulating policies and education/outreach efforts that would increase their participationEITC non-participants, EITC participants, rural low-income mothers, state EITC, rural low-income families

A Supersymmetry approach to billiards with randomly distributed scatterers

The density of states for a chaotic billiard with randomly distributed point-like scatterers is calculated, doubly averaged over the positions of the impurities and the shape of the billiard. Truncating the billiard Hamiltonian to a N x N matrix, an explicit analytic expression is obtained for the case of broken time-reversal symmetry, depending on rank N of the matrix, number L of scatterers, and strength of the scattering potential. In the strong coupling limit a discontinuous change is observed in the density of states as soon as L exceeds N

Small denominators, frequency operators, and Lie transforms for nearly integrable quantum spin systems

Based on the previously proposed notions of action operators and of quantum integrability, frequency operators are introduced in a fully quantum-mechanical setting. They are conceptually useful because another formulation can be given to unitary perturbation theory. When worked out for quantum spin systems, this variant is found to be formally equivalent to canonical perturbation theory applied to nearly integrable systems consisting of classical spins. In particular, it becomes possible to locate the quantum-mechanical operator-valued equivalent of the frequency denominators that may cause divergence of the classical perturbation series. The results that are established here link the concept of quantum-mechanical integrability to a technical question, namely, the behavior of specific perturbation series

Correlation functions of scattering matrix elements in microwave cavities with strong absorption

The scattering matrix was measured for microwave cavities with two antennas. It was analyzed in the regime of overlapping resonances. The theoretical description in terms of a statistical scattering matrix and the rescaled Breit-Wigner approximation has been applied to this regime. The experimental results for the auto-correlation function show that the absorption in the cavity walls yields an exponential decay. This behavior can only be modeled using a large number of weakly coupled channels. In comparison to the auto-correlation functions, the cross-correlation functions of the diagonal S-matrix elements display a more pronounced difference between regular and chaotic systems

Cultural difference in attitudes towards stuttering among British, Arab and Chinese students: considering home and host cultures

Background Geographical and cultural differences have been shown to affect public attitudes towards stuttering. However, increasingly for many individuals in the world one's birthplace culture (or home culture) and culture in their local geographical environment (or host culture) are not the same. Aims The effects of home culture and host culture in shaping the attitudes towards stuttering among students with British, Arab and Chinese home cultures attending one British university were explored. The effects of host culture were investigated by considering the time lived in the UK for Arab and Chinese students. Methods & Procedures The study used a descriptive survey design that included a standardized self‐delivered questionnaire: the Public Opinion Survey of Human Attributes—Stuttering (POSHA‐S). Purposive sampling was carried out thorough volunteer mailing lists, student societies and personal contact. The final sample of 156 university students included 51 British, 52 Arab and 53 Chinese students. Outcomes & Results Overall stuttering score (OSS), which is indicative of attitudes towards stuttering, was highest for British participants (mean = 30) and lowest for Chinese participants (mean = 13), with Arab participants falling in the middle (mean = 21). The differences in attitudes between the three groups were statistically significant, suggesting that home culture is a contributor to attitudes towards stuttering. A post‐hoc item analysis of the POSHA‐S revealed numerous specific differences in attitudes towards stuttering between the three groups, including differences in the attribution of the aetiology of stuttering, their role in helping people who stutter (PWS) and sympathy toward PWS. Time lived in the UK—a proxy measure for the role of host culture—did not significantly influence the attitudes of Arab and Chinese respondents. Conclusions & Implications To varying degrees, all three groups had evidence of stereotypical stuttering attitudes. Nevertheless, given similar ages and student status in the same university, observed respondent differences confirm previous research documenting geographical influences on stuttering attitudes in Western versus East Asian and Middle Eastern samples. The study also provides evidence that home culture was influential in shaping attitudes towards stuttering, but host culture was not a significant contributor. What this paper adds What is already known on the subject Public stereotypical beliefs towards stuttering are found across the world and hinder the quality of life among PWS. Different cultures have unique stereotypical beliefs towards PWS. What this study adds to existing knowledge To the best of our knowledge, no other study has investigated specifically if individuals who live in the same geographical location but have different home cultures, have similar or differing attitudes towards PWS. Results provide preliminary evidence that the home culture of an individual was influential in shaping attitudes towards PWS, but host culture, measured as the length of time living in the current geographical location, did not have a significant relationship with attitudes towards stuttering. What are the potential or actual clinical implications of this work This study highlights that culturally sensitive clinical practice should not be based on just the culture of the region but should take home culture into consideration as well, and clinicians should discuss cultural perceptions of stuttering with clients in clinical practice

How do you say ‘hello’? Personality impressions from brief novel voices

On hearing a novel voice, listeners readily form personality impressions of that speaker. Accurate or not, these impressions are known to affect subsequent interactions; yet the underlying psychological and acoustical bases remain poorly understood. Furthermore, hitherto studies have focussed on extended speech as opposed to analysing the instantaneous impressions we obtain from first experience. In this paper, through a mass online rating experiment, 320 participants rated 64 sub-second vocal utterances of the word ‘hello’ on one of 10 personality traits. We show that: (1) personality judgements of brief utterances from unfamiliar speakers are consistent across listeners; (2) a two-dimensional ‘social voice space’ with axes mapping Valence (Trust, Likeability) and Dominance, each driven by differing combinations of vocal acoustics, adequately summarises ratings in both male and female voices; and (3) a positive combination of Valence and Dominance results in increased perceived male vocal Attractiveness, whereas perceived female vocal Attractiveness is largely controlled by increasing Valence. Results are discussed in relation to the rapid evaluation of personality and, in turn, the intent of others, as being driven by survival mechanisms via approach or avoidance behaviours. These findings provide empirical bases for predicting personality impressions from acoustical analyses of short utterances and for generating desired personality impressions in artificial voices

Supporting older and younger adults’ memory for recent everyday events: a prospective sampling study using SenseCam

This study measured the effect of a wearable camera, SenseCam, on older and younger adults’ memories of recently experienced everyday events. Participants used SenseCam to prospectively sample events from a typical week, which they recalled two weeks later. Recall was cued by a self-generated title only (control condition), by the title and forward-order SenseCam images, or by the title and random-order SenseCam images. In the control condition, older and younger adults’ memories were comparably episodic, but older adults recalled more semantic details. Both forward- and random-order SenseCam images were associated with increased episodic and semantic recall in both groups, and there was a small but significant effect of temporal order favouring the forward-order condition. These findings suggest that SenseCam is effective in supporting retrieval of memory for recent events, and the results of the temporal order manipulation also shed light on the mechanism of SenseCam’s effect