Conservation Behavior: From Voluntary Restraint to a Voluntary Price Premium

This paper provides a theoretical and empirical investigation of conservation behavior that is motivated by concern for the environment. Two types of behavior are considered. First, individuals who care about environmental quality may voluntarily restrain their consumption of goods and services that generate a negative externality. Second, individuals may choose to pay a voluntary price premium for goods and services that are more "environmentally friendly." A theoretical model highlights the relationship between such voluntary restraint and a voluntary price premium. We test predictions of the model in an empirical study of household electricity consumption with introduction of a price-premium, green-electricity program. We find evidence of voluntary restraint and its relation to a voluntary price premium. The empirical results are consistent with the model of conservation behavior, as none of the theoretical predictions can be rejected.Consumer, Electricity, Environment, Households, Individual

Private Provision of Environmental Public Goods: Household Participation in Green-Electricity Programs

Green-electricity programs provide an opportunity to study private provision of public goods in a field setting. The first part of this paper develops a theoretical framework to analyze household decisions about voluntary participation in green-electricity programs. We consider different participation mechanisms and show how they relate to existing theory on either pure or impure public goods. The models are used to examine the implications of participation mechanisms for the level of public-good provision. The second part of the paper provides an empirical investigation of actual participation decisions in two green- electricity programs: one based on a pure public good and the other based on an impure public good. The data come from original household surveys of participants and nonparticipants in both programs, along with utility data on household electricity consumption. The econometric results are interpreted in the context of the theoretical models and are compared to other studies of privately provided public goods.Pure and impure public goods, private provision, green electricity

Factorial Invariance of the Brief Symptom Inventory-18 (BSI-18) for Adults of Mexican Descent across Nativity Status, Language Format, and Gender

The cultural equivalence of psychological outcome measures remains a major area of investigation. The current study sought to test the factor structure and factorial invariance of the Brief Symptom Inventory-18 (BSI-18) with a sample of adult individuals of Mexican descent (N = 923) across nativity status (U.S.- vs. foreign-born), language format (English vs. Spanish), and gender. The results show that 1-factor and 3-factor measurement models provided a good fit to the data; however, a single-factor model was deemed more appropriate and parsimonious. Tests of measurement invariance and invariance of factor variances (i.e., structural invariance) indicated at least partial measurement invariance across gender, nativity status, and language format. These findings suggest that the BSI-18 operates in a similar fashion among adults of Mexican descent regardless of nativity status, language format of the survey, and gender. Clinical and practical implications for use of the BSI-18 with Latino populations are discussed

Pluralism, Relativism, and Liberalism

One major focus of recent value-pluralist literature has been the question of what normative consequences follow from pluralism. This essay critically examines three arguments that attempt to show that either liberalism or a bounded modus vivendi is the state of affairs that pluralism makes morally preferable. All three arguments are shown to encounter the same fundamental problem—once we have agreed that values and sets of values are unrankable, any effort to claim that one such set is morally preferable will inevitably contradict value pluralism, either explicitly or implicitly. If this is correct, it seems that pluralism leads to relativism

Buddhism, Mindfulness, and Transformative Politics

This article examines whether the American cultural phenomena of the practice of Buddhism or the Buddhism-derived technique of mindfulness are likely to be helpful to the political left. It summarizes the central teachings of the ancient Buddhist texts, with particular focus on the issues of mindfulness and politics. It also reviews the political history of Buddhist countries. The author argues that although modern Buddhism has shed its historical embrace of absolutist monarchy in favor of republicanism, and although there is some ideological overlap between Buddhism and the American Left, Buddhism in America is too small a movement for it to be of much significance for progressive politics. Mindfulness appears to be capable of becoming a much larger phenomenon, but its separation from its Buddhist origins makes it also unlikely to be strategically important for the Left

Analytical results for how flexibility affects flapping propulsion

Wing or fin flexibility can dramatically affect the performance of flying and swimming animals. Both laboratory experiments and numerical simulations have been used to study these effects, however useful analytical results are notably lacking. Here, we develop a small-amplitude theory to model a flapping wing that pitches passively due to a combination of wing compliance, inertia, and fluid forces. Remarkably, we obtain a class of exact solutions describing the wing’s emergent pitching motions, along with expressions for how thrust and efficiency are modified by compliance. The solutions recover a range of realistic behaviors and shed new light on how flexibility can aid performance, the importance of resonance, and the separate roles played by wing and fluid inertia. Unlike experiments or simulations, these analytical results afford simple, robust estimates for how flexibility affects propulsion and may prove useful even in situations where details of the flapping motion and wing geometry differ

The effectiveness of faecal removal methods of pasture management to control the cyathostomin burden of donkeys

Background: The level of anthelmintic resistance within some cyathostomin parasite populations has increased to the level where sole reliance on anthelmintic-based control protocols is not possible. Management-based nematode control methods, including removal of faeces from pasture, are widely recommended for use in association with a reduction in anthelmintic use to reduce selection pressure for drug resistance; however, very little work has been performed to quantitatively assess the effectiveness of such methods.<p></p> Methods: We analysed data obtained from 345 donkeys at The Donkey Sanctuary (Devon, UK), managed under three different pasture management techniques, to investigate the effectiveness of faeces removal in strongyle control in equids. The management groups were as follows: no removal of faeces from pasture, manual, twice-weekly removal of faeces from pasture and automatic, twice-weekly removal of faeces from pasture (using a mechanical pasture sweeper). From turn-out onto pasture in May, monthly faecal egg counts were obtained for each donkey and the dataset subjected to an auto regressive moving average model.<p></p> Results: There was little to no difference in faecal egg counts between the two methods of faecal removal; both resulted in significantly improved cyathostomin control compared to the results obtained from the donkeys that grazed pasture from which there was no faecal removal.<p></p> Conclusions: This study represents a valuable and unique assessment of the effectiveness of the removal of equine faeces from pasture, and provides an evidence base from which to advocate twice-weekly removal of faeces from pasture as an adjunct for equid nematode control. Widespread adoption of this practice could substantially reduce anthelmintic usage, and hence reduce selection pressure for nematode resistance to the currently effective anthelmintic products.<p></p&gt

Perceptual adaptation by normally hearing listeners to a simulated "hole" in hearing

Simulations of cochlear implants have demonstrated that the deleterious effects of a frequency misalignment between analysis bands and characteristic frequencies at basally shifted simulated electrode locations are significantly reduced with training. However, a distortion of frequency-to-place mapping may also arise due to a region of dysfunctional neurons that creates a "hole" in the tonotopic representation. This study simulated a 10 mm hole in the mid-frequency region. Noise-band processors were created with six output bands (three apical and three basal to the hole). The spectral information that would have been represented in the hole was either dropped or reassigned to bands on either side. Such reassignment preserves information but warps the place code, which may in itself impair performance. Normally hearing subjects received three hours of training in two reassignment conditions. Speech recognition improved considerably with training. Scores were much lower in a baseline (untrained) condition where information from the hole region was dropped. A second group of subjects trained in this dropped condition did show some improvement; however, scores after training were significantly lower than in the reassignment conditions. These results are consistent with the view that speech processors should present the most informative frequency range irrespective of frequency misalignment. 0 2006 Acoustical Society of America