How Intermittent Breaks in Interaction Improve Collective Intelligence

Ethan  Bernstein; Jesse  Shore; David  Lazer

Article | Proceedings of the National Academy of Sciences of the United States of America | August 28, 2018

How Intermittent Breaks in Interaction Improve Collective Intelligence

by Ethan Bernstein, Jesse Shore and David Lazer

Abstract

People influence each other when they interact to solve problems. Such social influence introduces both benefits (higher average solution quality due to exploitation of existing answers through social learning) and costs (lower maximum solution quality due to a reduction in individual exploration for novel answers) relative to independent problem solving. In contrast to prior work, which has focused on how the presence and network structure of social influence affect performance, here we investigate the effects of time. We show that when social influence is intermittent it provides the benefits of constant social influence without the costs. Human subjects solved the canonical traveling salesperson problem in groups of three, randomized into treatments with constant social influence, intermittent social influence, or no social influence. Groups in the intermittent social-influence treatment found the optimum solution frequently (like groups without influence) but had a high mean performance (like groups with constant influence); they learned from each other, while maintaining a high level of exploration. Solutions improved most on rounds with social influence after a period of separation. We also show that storing subjects’ best solutions so that they could be reloaded and possibly modified in subsequent rounds—a ubiquitous feature of personal productivity software—is similar to constant social influence: it increases mean performance but decreases exploration.

Keywords: transparency; social influence; Collective Intelligence; Interaction; problem solving; collaboration; intermittant; Breaks; always on; communication technologies; communication; Communication; Design; Information; Management; Leadership; Organizational Design; Organizational Structure; Performance; Social and Collaborative Networks; Information Technology;

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Citation:

Bernstein, Ethan, Jesse Shore, and David Lazer. "How Intermittent Breaks in Interaction Improve Collective Intelligence." Proceedings of the National Academy of Sciences of the United States of America 115, no. 35 (August 28, 2018).

Making good hiring decisions is a critical management activity, yet many leaders just “wing it” when interviewing candidates to fill openings by having an organic conversation to assess the candidate’s fit, unknowingly subjecting the process to unconscious bias. Instead, organizations should employ structured interviewing techniques to carefully assess the skills needed for a given opening, to determine a consistent approach for fairly evaluating candidates’ skills, and ultimately to make the best possible hiring decision. This note aims to help the reader acquire the skills necessary to be an effective interviewer and to champion best-practice interviewing within his or her organization. Beginning by briefly summarizing the pitfalls of unstructured interviewing, the note proceeds to explain three types of structured interviewing techniques, the steps hiring managers should undertake to prepare for and conduct interviews, and tips for making evidence-based assessments.

Teaching Note | HBS Case Collection | October 2015 (Revised February 2020)

Trouble at Tessei

Ethan Bernstein and Ryan Buell

In 2005, Teruo Yabe is asked to revive Tessei, the 669-person JR-East subsidiary responsible for cleaning its Shinkansen ("bullet") trains. Operational mistakes, customer complaints, safety issues, and employee turnover are at or near all-time highs, even as the demands on Tessei continued to grow.

Given previous leaders' failed attempts to fix Tessei's problems with increased managerial monitoring and controls, Yabe seeks a creative approach to overcome the motivation, capability, and coordination challenges facing his organization. Like many contemporary leaders, he selects transparency as his tool. He is, however, unique in adopting a highly nuanced approach to implementing transparency. In the process, he not only leads a fantastic organizational turnaround but even helps to make otherwise "dirty" work more meaningful for Tessei front-line employees. The case therefore presents students, particularly in leadership, organizational behavior, operations management, and service operations courses, with an opportunity to think through how a well-crafted transparency strategy can act as a powerful leadership tool.

Keywords: service operations; service management; employee engagement; employee motivation; leadership and managing people; leadership; quality improvement; efficiency; Japan; operational transparency; employee coordination; transparency; Leadership; Service Delivery; Service Operations; Employees; Quality; Transportation Industry; Japan;

Citation:

Bernstein, Ethan, and Ryan Buell. "Trouble at Tessei." Harvard Business School Teaching Note 616-031, October 2015. (Revised February 2020.) View Details

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How Intermittent Breaks in Interaction Improve Collective Intelligence

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