Robert L. Bray
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Robert L. Bray

Associate Professor of Operations

Kellogg Faculty Page →

Are “Menu Costs” Messing Up Your Supply Chain?

When it’s cheaper to change product prices, companies benefit—and so do their suppliers, new research shows.

Researchers: Robert L. Bray and Ioannis Stamatopoulos

January 4, 2021


Having a Far-Flung Supply Chain May Lead to More Product Defects

When firms have to collaborate over long distances, the final product suffers.

Researchers: Robert L. Bray, Juan Camilo Serpa and Ahmet Colak

May 15, 2020


Podcast: The (Surprisingly Muddy) Case for Transparency

Economists prize sharing information. On this episode of The Insightful Leader, we ask if that’s always the right move.

Researchers: Robert L. Bray

February 20, 2020


A Simple Way to Make Your Customers More Satisfied with Their Deliveries

Hint: It comes down to when you send status updates.

Researchers: Robert L. Bray

December 2, 2019


Take 5: How to Increase Your Office's Productivity

Research-backed tips for improving workflows and discouraging slacking.

Researchers: Michael Powell, Robert L. Bray, Nicola Persico, George Georgiadis, Jan A. Van Mieghem and Chaithanya Bandi

July 5, 2019


A Counterintuitive Way to Keep Shelves Stocked and Prices Down

New research suggests how to improve supply-chain efficiency and avoid “inventory runs.”

Researchers: Robert L. Bray, Yuliang Yao, Yongrui Duan and Jiazhen Huo

October 4, 2018


A Smarter Way to Schedule

What multitaskers can learn from how judges schedule hearings

Researchers: Robert L. Bray, Decio Coviello, Andrea Ichino and Nicola Persico

October 5, 2015


Whipping the Supply Line into Shape

New insight into the bullwhip effect

Researchers: Robert L. Bray and Haim Mendelson

March 13, 2013