War, Economic Development, and Political Development in the Contemporary International System

The European state-building experience has led many scholars to argue that war forces states to increase their fiscal-administrative capacity, or what we might refer to as political development, in order to compete in the international system. War also requires states to generate wealth to support such competition, which should lead to progressively increased levels of economic development. Yet, in contemporary empirical studies, war is often studied as a dependent variable, with economic and political development modeled as affecting its origination. This reading of theory and empirical work suggests that war, economic development, and political development constitute an endogenous system. In this paper, we develop expectations about how these three processes interact and test them using a three-stage least squares regression model. The results show significant simultaneous relationships between the three processes. We conclude that war, economic development, and political development are mutually constitutive processes in the contemporary international system.     

Fertility control in historical China revisited: New methods for an old debate

We revisit the debate over the deliberate control of reproduction in historical China through a reanalysis of data from the Qing (1644–1911) Imperial Lineage that accounts for physiological or other differences between couples that affected their chances of having children. Even though studies of contemporary and historical European fertility suggest that failing to control for such differences may obscure evidence of parity-specific control, previous studies of historical Chinese fertility have not accounted for them. We show that in the Lineage, failure to account for such differences leads the association between the number of children already born and the chances of having another birth to appear to be positive, but that once they are accounted for properly, the relationship is inverted. Based on this, we conclude that lineage members adjusted their reproductive behavior based on the number of children. We also show that the sex composition and survival of previous births affected reproductive behavior. We conclude by suggesting that one way forward in the ongoing debate over fertility control in historical China is through application of such methods to other datasets and comparison of results. We also suggest that progress in the debate over fertility in historical China has been impeded by confusion over the definition of fertility control, so that some behaviors are recognized as fertility control by some parties in the debate but not others.     

Wealth stratification and reproduction in Northeast China, 1866–1907

Although the importance of material wealth to population growth is the core of Malthusian theory about population dynamics in pre-transitional societies, our understanding of the relationship between wealth and reproductive success in China is still limited. Until recently, there was little in the way of relevant data. In the absence of empirical evidence to the contrary, conceptions of the Chinese demographic regime were largely Malthusian, in that they did not account for the possible role of a fertility-based preventive check. In this study, we examine wealth differentials in reproduction in historical rural China by using newly available longitudinal individual level demographic and household level land holding data for 108,100 immigrants and their descendants living in 120 villages in Shuangcheng, Northeast China, between 1866 and 1907. Our study demonstrates a positive correlation between land holding status and marital fertility among the population under study. In addition, there is also a clear pattern of fertility differentials according to household context and other measures of socioeconomic status. Our findings suggest that these fertility differentials are not only results of certain social institutions and customs but also the consequences of couple's behavior of fertility control in response to socioeconomic and other household conditions.     

Social Exclusion: The Interplay of Group Goals and Individual Characteristics

Past research has shown that adolescents justify social exclusion based on concerns for group functioning, and yet, to date, no study has evaluated whether group functioning justifications shift or remain stable across different exclusion contexts. In this study, we systematically manipulated exclusion context (i.e., competitive or noncompetitive soccer groups) and individual characteristics of the target of exclusion to test the nature of the interaction between these factors during exclusion judgments. Adolescents’ (N = 201; 61 % Female) exclusion judgments differed across contexts only when an individual’s ability was under consideration. Intergroup (i.e., gender, nationality) and interpersonal (i.e., aggression, shyness) characteristics overwhelmed contextual considerations. Results indicate the complexity of factors weighed by adolescents when making exclusion judgments, and suggest the need for extension of the present findings to understand more fully the interaction between the context of exclusion and individual characteristics in exclusion judgments.     

How Managers Can Reduce Household Water Use Through Communication: A Field Experiment

As populations increase and droughts intensify, water providers are using tools such as persuasive messaging to decrease residential water use. However, district-led messaging campaigns are rarely informed by psychological science, evaluated for effectiveness, or strategically disseminated. In collaboration with a water district, we report a field experiment among single-family households using persuasive messaging based on the information-motivation-behavioral skills model (IMB). We randomly assigned 10,000 households to receive different mailings and measured household water use. All messaging reduced water consumption relative to the control. On average, water use dropped 0.68 hundred cubic feet (HCF) (509 gallons) per household in the first month. Had all 10,000 single-family, occupied, non-agricultural residences been mailed the IMB messaging, more than five million gallons would have been saved in the first month. The effects declined but persisted for approximately three months and were three to six times greater in households with high water use (75th to 90th percentiles) relative to average water use. These findings suggest that combining message elements from the IMB model can reduce residential water use and that targeting high-use households is particularly cost-effective.     

Do Retributive and Restorative Justice Processes Address Different Symbolic Concerns?

In support of a unitary conceptualization of retributive justice (justice through the imposition of punishment) and restorative justice (justice through dialogue aimed at consensus), three studies using hypothetical and recalled experiences of victimization found that people’s endorsement of, and satisfaction with, either justice notion depends on the symbolic meaning of the transgression. In Study 1, perceiving the transgression as a status/power violation was uniquely related to the endorsement of retributive justice, whereas perceiving it as a violation of shared values was uniquely related to restorative justice. In Study 2, motivation to restore status/power was related to retributive responses, whereas motivation to restore value consensus with the offender was uniquely related to restorative responses. In Study 3, a scenario experiment, respondents called for greater additional sanction when the applied justice process (retributive vs. restorative) did not fit the salient meaning of the transgressions compared to when it did (status/power vs. values).     

Virtual forensic entomology: improving estimates of minimum post-mortem interval with 3D micro-computed tomography

We demonstrate how micro-computed tomography (micro-CT) can be a powerful tool for describing internal and external morphological changes in Calliphora vicina (Diptera: Calliphoridae) during metamorphosis. Pupae were sampled during the 1st, 2nd, 3rd and 4th quarter of development after the onset of pupariation at 23 °C, and placed directly into 80% ethanol for preservation. In order to find the optimal contrast, four batches of pupae were treated differently: batch one was stained in 0.5M aqueous iodine for 1 day; two for 7 days; three was tagged with a radiopaque dye; four was left unstained (control). Pupae stained for 7d in iodine resulted in the best contrast micro-CT scans. The scans were of sufficiently high spatial resolution (17.2 μm) to visualise the internal morphology of developing pharate adults at all four ages. A combination of external and internal morphological characters was shown to have the potential to estimate the age of blowfly pupae with a higher degree of accuracy and precision than using external morphological characters alone. Age specific developmental characters are described. The technique could be used as a measure to estimate a minimum post-mortem interval in cases of suspicious death where pupae are the oldest stages of insect evidence collected.