In the News

"Strategic Avoidance and the Welfare Impacts of U.S. Solar Panel Tariffs"

• "Tariff Trial and Error in the Solar Energy Sector"
  Energy Institute at Haas, August 4, 2025

Carbon Emissions in Advertising

• "Managing the Carbon Emissions out of Marketing"
  Los Angeles Times, March 7, 2024

"Educational Campaigns for Product Labels: Evidence from On-Shelf Nutritional Labeling"

• "Do Grocery Store and Fast Food Health Labels Lead to Better Choices?"
  Discover Magazine, July 18, 2022

"Peer Effects in the Diffusion of Solar Photovoltaic Panels"

• "Behavioral Contagion Could Spread the Benefits of a Carbon Tax"
  The New York Times, August 19, 2020
• "How Peer Pressure Can Help Stop Climate Change"
  The Washington Post, February 20, 2020
• "Thy Neighbor's Solar Panels"
  The Atlantic, March 2020
• "Solar Industry Borrows a Page, and a Party, From Tupperware"
  New York Times, November 30, 2012
• "The Psychology of Small-Scale Solar"
  AOL Energy, November 19, 2012
• "Is Renewable Energy Contagious? Research Shows a 'Peer Effect'"
  Climate Wire, November 5, 2012
• "Keep up appearances - go solar!"
  Energy Live News, October 22, 2012
• "Solar panel study shows it's OK to be a copycat"
  Greenbang, October 22, 2012
• "Solar Power Adoption is Contagious"
  Environmental News Network, October 22, 2012
• "Study: Solar power is contagious"
  R&D Magazine, October 19, 2012
• "Enthusiasm for solar panels is contagious"
  Wired, October 19, 2012
• "Solar Power in Neighborhoods Is Contagious"
  ScienceBlog, October 19, 2012
• "Solar Power is Contagious, Study Finds"
  Phys.org, October 18, 2012
• "Keeping Up With The Greens: Neighborhood Solar Is Contagious"
  Forbes, December 9, 2011
• "Solar Power is Contagious - But Not Quite Virulent"
  Washington Post, December 5, 2011
• Colorado's Progressive Talk Radio
  AM760, April 25, 2011
• "Solar Panels are Contagious"
  Wired, April 12, 2011
• "Are Solar Panels Contagious? Stanford Studies Reveal it is Possible"
  AGBeat, April 12, 2011
• "Are Solar Panels Contagious?"
  Sierra, April 11, 2011
• "New Study Finds Solar Panels Are 'Contagious'"
  Good Environment, April 11, 2011
• "Australia's Home Solar Power Revolution And The Viral Effect"
  Energy Matters, April 6, 2011

"Does Time of Day Affect Variety-Seeking?"

• "Research Reveals How Time Of Day Impacts Consumer Choice"
  Forbes, January 10, 2019

"Field Experimental Evidence Shows that Self-Interest Attracts More Sunlight"

• "Self-interest powers decision to go solar"
  Nature Research Highlights, August 12, 2020

"Peer Effects in Water Conservation: Evidence from Consumer Migration"

• "Peer Effects in Water Conservation: Evidence from Consumer Migration"
  Global Water Forum, August 13, 2018

"Local Excise Taxes, Sticky Prices, and Spillovers: Evidence from Berkeley's Soda Tax"

• "Do Soda Taxes Work? Not Unless Retailers Raise Prices"
  Harvard Business Review, January 10, 2018

"BYOB: How Bringing your Own Shopping Bags Leads to Treating Yourself and the Environment"

• "Do 'Environmentally Responsible Products Help the Planet? Or do they just get us to buy more Stuff?"
  Ensia, October 22, 2019
• "Understanding Why We Eat What We Eat"
  The Splendid Table, American Public Media, February 22, 2018
• "How Frugal Living Can Lead To Big Spending"
  Forbes, September 28, 2015
• "How Going Green Can Give You License to Buy Cupcakes"
  The New York Times, September 17, 2015
• "If You Bring Reusable Bags To The Grocery Store, You Might Buy More Junk Food"
  The Huffington Post, July 16, 2015
• "Bring Your Own Bag, Treat Yourself to Ice Cream"
  The New York Times, July 15, 2015
• "Shoppers Buy More Junk Food When They Bring Their Own Bags"
  The Atlantic, July 14, 2015
• "Study: People Who Use Reusable Shopping Bags Indulge"
  WUNC NC Public Radio, July 12, 2015
• "Reusable Bags Encourage Shoppers to Buy Junk Food, Harvard finds"
  The Telegraph, July 9, 2015
• "Study: People Who Bring Reusable Bags To Grocery Stores Buy More Junk Food"
  CBS, July 9, 2015
• "Are you filling your reusable shopping bag with junk food?"
  CBS Money Watch, July 9, 2015
• "Shoppers with Reusable Bags Buy More Junk Food"
  MarketWatch, July 8, 2015
• "Reusable Bags Make People Buy Organic—and Junk: An Interview with Uma Karmarkar"
  Harvard Business Review, April 2015
• "Reusable Grocery Bags Make You More Likely To Buy Organic Kale and Also Candy Bars"
  Fast Company, April 2015
• "Before You Head to the Grocery Store, Read This"
  Self, April 3, 2015
• "Are your reusable grocery bags making you fat?"
  Grist, April 1, 2015
• "The Double-Edged Sword of... Reusable Shopping Bags?"
  Metro, April 20, 2015
• "Why Bad Habits Come Back to Bite Us"
  NPR, The Takeaway, March 9, 2015
• "Eco-Waverers: When People Feel Good About Themselves, They do Bad Things"
  The Economist, February 28, 2015

"Predicting Advertising Success Beyond Traditional Measures: New Insights from Neurophysiological Methods and Market Response Modeling"

• "Neuromarketing: Pseudoscience No More"
  Forbes, February 24, 2015

"Calorie Posting in Chain Restaurants"

• "Why Canadians will probably never stop ordering 500-calorie Starbucks lattes"
  CBC News, September 16, 2016
• "What 2,000 Calories Looks Like"
  The New York Times, December 22, 2014
• "Calories on Menus: Nationwide Experiment Into Human Behavior"
  The New York Times, November 6, 2014
• "FDA Requires Calorie Counts at Restaurants"
  Wall Street Journal, November 25, 2014
• "Does Caloric Transparency Change Behavior?"
  Marketplace, November 25, 2014
• "FDA to Require Calorie Counts on Menu Boards"
  Time Warner News, November 25, 2014
• "F.D.A. to Require Calorie Count, Even for Popcorn at the Movies"
  New York Times, November 24, 2014
• "Where Calories Are Hiding?"
  Wall Street Journal, July 30, 2013
• "Don't Count on Calorie Counts"
  New York Times, June 22, 2013
• "Starbucks Puts Calorie Counts on Menus Nationwide"
  Wall Street Journal, June 19, 2013
• "Risking Pastry Sales, Starbucks Expands Menu Calorie Counts Nationwide"
  Businessweek, June 19, 2013
• "Starbucks to Post Calorie Counts Nationwide"
  NBC News, June 19, 2013
• "Frappuccino Quantified: Starbucks to Add Calorie Counts"
  The Atlantic, June 18, 2013
• "Fizzy Drinks and the US Economy"
  Fundweb, October 18, 2012
• "Drink this, not that - Do calorie labels inspire healthy choices?"
  Milken Institute, October 18, 2012
• "McDonald's Menu Makeover, NY Soda Ban Don't Go Far Enough: NYT's Mark Bittman"
  Yahoo Finance, September 14, 2012
• "McDonald's to start posting calorie counts on its menus"
  The Economic Times, September 13, 2012
• "McDonald's highest-calorie menu item? Not a burger"
  The Wall Street Journal (Marketwatch), September 13, 2012
• "At McDonald's, You'll Know When the Fat Hits the Fryer"
  Bloomberg Businessweek, September 12, 2012
• "McDonald's Menu to Post Calorie Data"
  The New York Times, September 12, 2012
• "Calorie Rules Make Diets a Federal Affair"
  The Wall Street Journal, April 2, 2011
• "Will Calorie Labeling in Restaurants Make a Difference?"
  Amber Waves, USDA, March 2011
• "Calorie Postings No Match for Holiday Gluttony"
  New York Times, January 13, 2011
• "Coming Soon: Theaters, Airplanes to Post Calories"
  The Wall Street Journal, August 31, 2010
• "Good and hungry: More Than Menus Need to be Revamped if Fast-Food Firms Want to Keep Growing"
  The Economist, June 7, 2010
• "Calorie Posting in Chain Restaurants"
  The NBER Digest, May 2010
• "Posting Calories at Restaurants: A Win-Win and Lose-Lose"
  Fox Business, April 28, 2010
• "Calorie Displays Don't Scare Starbucks"
  Marketplace, American Public Media, April 7, 2010
• "A Tale of Two Menus and Calorie-Posting"
  Philadelphia Inquirer, April 1, 2010
• "Posting Calories: Profits For Restaurants Could Result, Study"
  The Huffington Post, March 23, 2010
• "Does Menu Labeling Affect Diners?"
  Los Angeles Times, February 22, 2010
• NPR: Here and Now, Podcast
  February 8, 2010
• "Calorie Labeling at Starbucks"
  Harvard Business Review, February 4, 2010
• "Calorie Counters"
  New York Times, February 2, 2010
• "Get a Handle on Your Love Handles with Economics"
  The Sydney Morning Herald, January 22, 2010
• "Starbucks Lures Calorie-Conscious NYC Coffee Buyers"
  Businessweek, January 11, 2010
• "Published Calories Counts Have Intended Effect"
  The Economist, January 9, 2010
• "Calorie Postings Trim Starbucks Calorie Consumption"
  Reuters, January 7, 2010
• "I'll Have a Low-Fat Muffin With My Frappuccino"
  New York Times, January 6, 2010
• "New Stanford Study Shows Posting Calories on Restaurant Menu Boards Lowers Customers' Calorie Counts per Visit"
  Stanford Press Release, January 6, 2010
• "Calorie Posting and Purchases"
  Washington Post, January 5, 2010