Abstract Understanding and addressing the consequences of partisan animosity requires knowledge its foundations. To what extent is between groups motivated by dislike for outgroups per se, policy disagreement, or other social group conflicts? In many circumstances, including extant experimental research, these patterns are observationally equivalent. a series vignette evaluation experiments, we estimate effects shared partisanship when additional information not present, benchmark against...

Lucid has become increasingly popular as a low-cost provider of online survey responses. In this memo, we share our concerns about Lucid’s recent data quality. First, large and increasing number respondents are failing attention checks. Second, who pass fail checks systematically different. Many standard appear to provide low-quality data. We conclude that researchers should exercise caution when analyzing recently collected from unless were subject stringent

Lucid, a popular source of online convenience survey samples, has seen significant increase in inattentive respondents since 2020. Inattentive participants – who incorrectly answer directed query attention check questions may be introducing substantial measurement error and attenuation bias. Using data from 152,967 across multiple studies conducted between January 2020 June 2021, we find that report less reliable demographic data, stable responses, are systematically different attentive...

Abstract Partisan Americans like members of their own party more than the opposing party. Scholars often interpret this as evidence that identity or loyalty influence interpersonal affect. First, we reassess previous studies and demonstrate prior results are also consistent with what would predict if people cared only about policy agreement. Next, difficulty manipulating perceptions without beliefs agreement vice versa. Finally, show partisans care much they do when two come into conflict....

<h3>Importance</h3> The health effects of restrictive immigration and refugee policies targeting individuals from Muslim-majority countries are largely unknown. <h3>Objective</h3> To analyze whether President Trump's 2017 executive order 13769, "Protecting the Nation Foreign Terrorist Entry into United States" (known as "Muslim ban" order) was associated with changes in care utilization by people born targeted nations living US. <h3>Design, Setting, Participants</h3> This retrospective...

Homosexuality is illegal in Lebanon and men who have sex with (MSM) may experience discrimination. Displaced Syrians, currently comprise approximately 20% of Lebanon’s population, also face Individuals are members both groups heightened levels discrimination abuse. In partnership local nongovernmental organizations serving the community, we recruited N = 292 MSM Beirut, Lebanon. Participants were interviewed about experiences violence context a larger health behavior survey, all offered...

Abstract Prior research has reported that Americans hold biased perceptions about the composition of US parties. Survey respondents vastly overestimate frequency with which partisans belong to other social groups stereotypically associated their party. We argue when Democrats, Republicans, and members American public are directly compared, evidence relative misperceptions is limited. Drawing on novel survey experimental measures, we find underestimate many differences in demographic...

This paper presents mathematics relevant to the question whether voting should be mandatory. Assuming a static distribution of voters’ political beliefs, we model how politicians might adjust their positions raise share vote. Various scenarios can explored using our app at https: //centrism.streamlit.app/. Abstentions are found have great impact on dynamics candidates, and in particular introduce possibility discontinuous jumps optimal candidate positions. is an unusual application ODEs. We...

Linking mothers to their newborns in health records is crucial for understanding the impact of policies, programs, and medical treatments on inter-generational outcomes. While previous studies have used shared identifiers like names or addresses linkage, such data are often unavailable Medicaid due privacy concerns. We present a scalable framework linking algorithm using MAX TAF claims data-lacking direct identifiers-that connects infants while ensuring protection. Our method accommodates...

ABSTRACT Computational reproducibility, or the ability to reproduce analytic results of a scientific study on basis publicly available code and data, is shared goal many researchers, journals, communities. Researchers in disciplines including political science have made strides toward realizing that goal. A new challenge, however, has arisen. Code too often becomes obsolete within only few years. We document this problem with random sample studies posted Institution for Social Policy Studies...

Computational reproducibility, or the ability to reproduce analytic results of a scientific study on basis publicly available code and data, is shared goal many researchers, journals, communities. Researchers in disciplines including political science have made strides towards realizing that goal. A new challenge, however, has arisen. Code too often becomes obsolete within just few years. We document this problem with random sample studies posted ISPS Data Archive; we encountered nontrivial...

This paper presents mathematics relevant to the question whether voting should be mandatory. Assuming a static distribution of voters' political beliefs, we model how politicians might adjust their positions raise share vote. Various scenarios can explored using our web-based app (see text for link). Abstentions are found have great impact on dynamics candidates, and in particular introduce possibility discontinuous jumps optimal candidate positions. is intended undergraduate students. It an...

6521 Background: Intermountain Healthcare is a system of 9 major community hospitals based in Salt Lake City, Utah. The has long history quality improvement and previously standardized the use breast preservation surgical management ductal carcinoma situ (DCIS). This project was undertaken to standardize evaluation axilla; specifically incorporation utilization sentinel lymph node biopsy as standard care. Methods: Baseline data for obtained from showing substantial variation between...

The consensus that American politicians are more ideologically extreme than voters has been challenged by the observation issue delegates---who adopt voters' majority position on each issue---can be median voter. We deepen understanding of this "delegate paradox" showing it is conditional. Issue delegates much voter in left- and right-leaning constituencies, but not evenly divided or purist constituencies. Consequently, delegate paradox (1) matters most under conditions have recently emerged...