PLACES'10: The 3rd Workshop on Programmng Language Approaches to concurrency and Communication-Centric Software

Paphos, Cyprus. March 201

Kingmakers or Cheerleaders? Party Power and the Causal Effects of Endorsements

When parties make endorsements in primary elections, does the favored candidate receive a real boost in his or her vote share, or do parties simply pick the favorites who are already destined to win? To answer this question, we draw on two research designs aimed at isolating the causal effect of Democratic Party endorsements in California’s 2012 primary election. First, we conduct a survey experiment in which we randomly assign a party endorsement, holding all other aspects of a candidate’s background and policy positions constant. Second, we use a unique dataset to implement a regression discontinuity analysis of electoral trends by comparing the vote shares captured by candidates who barely won or barely lost the internal party endorsement contest. We find a constellation of evidence suggesting that endorsements do indeed matter, although this effect appears to be contingent upon the type of candidate and voter: endorsements matter most for candidates in their party’s mainstream, and for voters who identify with that party and for independents. The magnitude of their impact is dramatically smaller than might be estimated from research designs less attuned to recent advances in causal inference

Discrimination in Mortgage Lending: Evidence from a Correspondence Experiment

We design and implement an experimental test for differential response by mortgage loan originators (MLOs) to requests for information about loans. Our e-mail correspondence experiment is designed to analyze differential treatment by client race and credit score. Our results show net discrimination by 1.8% of MLOs through non-response. We also find that MLOs offer more details about loans and are more likely to send follow up correspondence to whites. The effect of being African American on MLO response is equivalent to the effect of having a credit score that is 71 points lower

Evidence for suppression of immunity as a driver for genomic introgressions and host range expansion in races of Albugo candida, a generalist parasite

How generalist parasites with wide host ranges can evolve is a central question in parasite evolution. Albugo candida is an obligate biotrophic parasite that consists of many physiological races that each specialize on distinct Brassicaceae host species. By analyzing genome sequence assemblies of five isolates, we show they represent three races that are genetically diverged by ∼1%. Despite this divergence, their genomes are mosaic-like, with ∼25% being introgressed from other races. Sequential infection experiments show that infection by adapted races enables subsequent infection of hosts by normally non-infecting races. This facilitates introgression and the exchange of effector repertoires, and may enable the evolution of novel races that can undergo clonal population expansion on new hosts. We discuss recent studies on hybridization in other eukaryotes such as yeast, Heliconius butterflies, Darwin’s finches, sunflowers and cichlid fishes, and the implications of introgression for pathogen evolution in an agro-ecological environment

Orientalism and the puzzle of the Aryan invasion theory

The origin of the Aryan invasion theory (AIT) is generally located in the discovery of the Indo-European and Dravidian language families. However, these discoveries cannot account for the emergence of the AIT, because the postulation of the invasion preceded the linguistic research. In its search for an alternative account of the cognitive conditions under which this theory could come into being, this article illustrates a particular way of studying the intellectual history of Orientalism. The Orientalist discourse on India is approached as a body of reflections on the western cultural experience of India. This perspective brings us to the thesis that the pre-conditions for the emergence of the AIT lay in the postulation of two entities in the Orientalist discourse on India: the ‘Hindu religion’ and its ‘caste system’. Both these notions and the AIT appeared cogent and coherent to European minds, because they mirrored internal developments within European culture and its intellectual debates, which had given shape to Europe’s experience of India