Replacement Effects and the Slow Cycle of Ideological Polarization in the U.S. House

2010 ◽  
Author(s):  
Thomas L. Brunell ◽  
Bernard Grofman ◽  
Samuel Merrill
Keyword(s):  
Ideological Polarization ◽  
The U.S

Citizens’, Scientists’, and Policy Advisors’ Beliefs about Global Warming

2015 ◽  
Vol 658 (1) ◽  
pp. 271-295 ◽  
Author(s):  
Toby Bolsen ◽  
James N. Druckman ◽  
Fay Lomax Cook
Keyword(s):  
United States ◽  
Global Warming ◽  
The United States ◽  
The Public ◽  
Energy Technologies ◽  
Ideological Polarization ◽  
The U.S ◽  
Analyze Data

Numerous factors shape citizens’ beliefs about global warming, but there is very little research that compares the views of the public with key actors in the policymaking process. We analyze data from simultaneous and parallel surveys of (1) the U.S. public, (2) scientists who actively publish research on energy technologies in the United States, and (3) congressional policy advisors and find that beliefs about global warming vary markedly among them. Scientists and policy advisors are more likely than the public to express a belief in the existence and anthropogenic nature of global warming. We also find ideological polarization about global warming in all three groups, although scientists are less polarized than the public and policy advisors over whether global warming is actually occurring. Alarmingly, there is evidence that the ideological divide about global warming gets significantly larger according to respondents’ knowledge about politics, energy, and science.

scholarly journals Ideological Asymmetries in Motivated Reasoning and the Mechanisms of Attitude Polarization: A Two-Wave Survey Experiment

2020 ◽  
Author(s):  
Davide Morisi ◽  
Matthew H. Goldberg ◽  
John Jost
Keyword(s):  
Social Networks ◽  
Motivated Reasoning ◽  
Social Cues ◽  
Survey Experiment ◽  
Social Conformity ◽  
Political Issues ◽  
Attitude Polarization ◽  
Ideological Polarization ◽  
Balanced Information ◽  
The U.S

Are there specific motives that lead individuals to become extreme in their political attitudes after exposure to information? Can these motives explain recent evidence that attitude polariza-tion occurs more on the conservative than the liberal side? We propose that two mechanisms, related to relational motives to engage in social conformity and epistemic motives to reduce uncertainty, might contribute to answering these questions. We used experimental manipula-tions to induce relational and epistemic motives in a two-wave survey experiment, in which we exposed participants to balanced information pertaining highly salient political issues in the U.S. Our results suggest that relational motives to maintain homogenous social networks are highly pertinent to how people, especially political conservatives, process information and make up their minds about important social and political issues. When exposed to social cues indicating where liberals and conservatives stand on specific issues, the two groups became fur-ther apart in their attitudes. Furthermore, we observed that, in the presence of social cues, con-servatives were more likely to develop extreme attitudes than liberals, triggering asymmetric polarization. Contrary to our predictions, however, we did not obtain consistent evidence of in-creased ideological polarization when epistemic motives to reduce uncertainty were present, although we found that conservatives (and not liberals) displayed a stronger confirmation bias in the evaluation of political arguments when uncertainty was high (compared to low).

scholarly journals The Zoom solution: Promoting effective cross-ideological communication online

2021 ◽  
Author(s):  
Ashley Binnquist ◽  
Stephanie Dolbier ◽  
Macrina Dieffenbach ◽  
Matthew Lieberman
Keyword(s):  
Social Media ◽  
Negative Affect ◽  
The Political ◽  
Online Video ◽  
Media Audiences ◽  
Face To Face ◽  
The Past ◽  
Ideological Polarization ◽  
The U.S ◽  
Society Research

Abstract The rise of ideological polarization in the U.S. over the past few decades has come with an increase in hostility on both sides of the political aisle. Although communication and compromise are hallmarks of a functioning society, research has shown that people overestimate the negative affect they will experience when viewing oppositional media, and it is likely that negative forecasts lead many to avoid cross-ideological communication (CIC) altogether. Additionally, a growing ideological geographic divide and online extremism fueled by social media audiences make engaging in CIC more difficult than ever. Here, we demonstrate that online video-chat platforms (i.e., Zoom) can be used to promote effective CIC among ideologically polarized individuals, as well as to better study CIC in a controlled setting. Participants (n = 122) had a face-to-face CIC over Zoom, either privately or publicly with a silent ingroup audience present. Participant forecasts about the interaction were largely inaccurate, with the actual conversation experience found to be more positive than anticipated. Additionally, the presence of an ingroup audience was associated with increased conflict. In both conditions, participants showed signs of attitude moderation, felt more favorable toward the outgroup, and felt more informed about the issue after the CIC. These results suggest that face-to-face CIC’s are generally positive and beneficial for partisans, and that greater effects may be achieved through private conversations, as opposed to more public social media interactions. Future researchers studying ideological conflict may find success using similar Zoom paradigms to bring together ideologically diverse individuals in controlled lab settings.

A Sum of Its Parts: Party Fit and Party Change in the U.S. House

2021 ◽  
pp. 1532673X2110068
Author(s):  
Daniel J. Lee ◽  
Sean M. Goff
Keyword(s):  
Civil Rights ◽  
Social Issues ◽  
Legislative Behavior ◽  
Roll Call ◽  
Party Change ◽  
The Core ◽  
Ideological Polarization ◽  
Retirement Decisions ◽  
Bill Cosponsorship ◽  
The U.S

Previous research has noted the transformation of the American parties since the 1970s, as exhibited in their increased ideological polarization and transformation on social issues like civil rights, abortion, and the environment. We contribute to the literature on party change by theoretically stressing the decentralized and individualistic nature of American parties, while using a measure of party change that is based on legislative behavior beyond roll call voting. Our paper uses social network analysis to analyze the parties from the 93rd to 110th Congresses, utilizing bill cosponsorship to define connections between members. Our analysis illustrates how the core of the party, that is, who are most central in the cosponsorship network, has changed over time. We find evidence that party centrality influenced retirement decisions, thereby reinforcing and contributing to party change.

Historical Introduction

1977 ◽  
Vol 35 ◽  
pp. 2-5
Author(s):  
R. D. Heidenreich
Keyword(s):  
Electron Emission ◽  
Secondary Electron ◽  
Secondary Electron Emission ◽  
50Th Anniversary ◽  
Secondary Emission ◽  
Wave Nature ◽  
Nobel Prize In Physics ◽  
Primary Electrons ◽  
The U.S ◽  
Mutual Agreement

This program has been organized by the EMSA to commensurate the 50th anniversary of the experimental verification of the wave nature of the electron. Davisson and Germer in the U.S. and Thomson and Reid in Britian accomplished this at about the same time. Their findings were published in Nature in 1927 by mutual agreement since their independent efforts had led to the same conclusion at about the same time. In 1937 Davisson and Thomson shared the Nobel Prize in physics for demonstrating the wave nature of the electron deduced in 1924 by Louis de Broglie.The Davisson experiments (1921-1927) were concerned with the angular distribution of secondary electron emission from nickel surfaces produced by 150 volt primary electrons. The motivation was the effect of secondary emission on the characteristics of vacuum tubes but significant deviations from the results expected for a corpuscular electron led to a diffraction interpretation suggested by Elasser in 1925.

Variations in Surface Textures of Quartz Sand using Electron Microscopy

1970 ◽  
Vol 28 ◽  
pp. 494-495
Author(s):  
Eugene J. Amaral
Keyword(s):  
Electron Microscopy ◽  
Glass Industry ◽  
Glass Slide ◽  
Distilled Water ◽  
Early Paleozoic ◽  
Secondary Effects ◽  
Surface Textures ◽  
High Silica ◽  
Sand Deposit ◽  
The U.S

Examination of sand grain surfaces from early Paleozoic sandstones by electron microscopy reveals a variety of secondary effects caused by rock-forming processes after final deposition of the sand. Detailed studies were conducted on both coarse (≥0.71mm) and fine (=0.25mm) fractions of St. Peter Sandstone, a widespread sand deposit underlying much of the U.S. Central Interior and used in the glass industry because of its remarkably high silica purity.The very friable sandstone was disaggregated and sieved to obtain the two size fractions, and then cleaned by boiling in HCl to remove any iron impurities and rinsed in distilled water. The sand grains were then partially embedded by sprinkling them onto a glass slide coated with a thin tacky layer of latex. Direct platinum shadowed carbon replicas were made of the exposed sand grain surfaces, and were separated by dissolution of the silica in HF acid.

The Effects of Estradiol on Chronically Damaged Human Fallopian Tubes: A SEM Study

1985 ◽  
Vol 43 ◽  
pp. 648-649
Author(s):  
A. Toledo ◽  
G. Stoelk ◽  
M. Yussman ◽  
R.P. Apkarian
Keyword(s):  
Menstrual Cycle ◽  
Epithelial Cell ◽  
Secretory Cell ◽  
Estrogen Therapy ◽  
Fallopian Tubes ◽  
Cell Surfaces ◽  
Proliferative Phase ◽  
Cyclic Patterns ◽  
Sem Study ◽  
The U.S

Today it is estimated that one of every three women in the U.S. will have problems achieving pregnancy. 20-30% of these women will have some form of oviductal problems as the etiology of their infertility. Chronically damaged oviducts present problems with loss of both ciliary and microvillar epithelial cell surfaces. Estradiol is known to influence cyclic patterns in secretory cell microvilli and tubal ciliogenesis, The purpose of this study was to assess whether estrogen therapy could stimulate ciliogenesis in chronically damaged human fallopian tubes.Tissues from large hydrosalpinges were obtained from six women undergoing tuboplastic repair while in the early proliferative phase of fheir menstrual cycle. In each case the damaged tissue was rinsed in heparinized Ringers-lactate and quartered.

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