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Shifting echo chambers in US climate policy networks.

Lorien Jasny¹, Amanda M Dewey², Anya Galli Robertson³

¹Department of Politics, University of Exeter, Exeter, United Kingdom.

|September 15, 2018

Summary

This summary is machine-generated.

US climate politics feature persistent echo chambers among policy elites. New research shows these networks shifted from international agreements to focus on the Clean Power Plan, impacting science communication and policy.

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Area of Science:

Environmental Policy
Political Science
Communication Studies

Background:

Climate politics in the US have been contentious long before recent administrations.
Previous research examined echo chambers in US climate politics, highlighting information exchange networks among policy elites.

Purpose of the Study:

To empirically examine and compare homophily and echo chambers in the US federal climate policy network at two distinct time points (2010 and 2016).
To analyze shifts in network structures and identify the key policy issues around which echo chambers formed.

Main Methods:

Utilized Exponential Random Graph Models (ERGM) to analyze network data from the federal climate policy network in summer 2016.
Compared 2016 network data with previous findings from 2010 to identify changes in homophily and echo chamber structures.

Main Results:

Echo chambers remain a significant feature of information exchange networks among US policy elites concerning climate change.
Pre-existing echo chambers focused on international emission reduction commitments have largely dissolved.
New echo chamber structures have emerged, primarily centered around the Clean Power Plan, a key Obama Administration policy.

Conclusions:

Echo chambers continue to shape elite-level science communication and policymaking in US climate politics.
The focus of these echo chambers is dynamic and responsive to specific policy instruments under consideration, such as the Clean Power Plan.
Shifting policy landscapes lead to the reconfiguration of information exchange networks among policy elites.