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• Case | HBS Case Collection | December 2018

  Creating the French Behavioral Insights Team

  Michael Luca, Ariella Kristal and Emilie Billaud

  This case explores how neuroscientist Mariam Chammat helped set up the first behavioral insights team at the center of the French government, and encouraged French administrations to innovate and create policy initiatives based on psychological theories of influence and persuasion. Students are asked to assess 35 projects ripe for behavioral intervention and pick the winning proposals.

  Keywords: choice architecture; Behavioral economics; experiments; Negotiation; Decision Making; Economics; Taxation; Entrepreneurship; Consumer Behavior; Public Administration Industry; Europe; France; Paris;

  Citation:

  Luca, Michael, Ariella Kristal, and Emilie Billaud. "Creating the French Behavioral Insights Team." Harvard Business School Case 919-015, December 2018.  View Details

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• Article | Journal of Applied Psychology | November 2018

  Worthy of Swift Trust? How Brief Interpersonal Contact Affects Trust Accuracy

  Oliver Schilke and Laura Huang

  Organizational scholars have long underscored the positive consequences of trust, yet trust can also have dysfunctional effects if it is not placed wisely. Though much research has examined conditions that increase individuals’ tendencies to trust others, we know very little about the circumstances under which individuals are likely to make more accurate trust decisions (i.e., neither misplace their trust nor refrain from trusting when doing so would have been beneficial), especially when they must do so rapidly and in the absence of an exchange history. Put simply, we have little understanding of what drives the accuracy of swift trust judgments. Building on relevant literatures, we propose that short episodes of prior interpersonal contact with a partner can increase the accuracy of swift trust decisions. Across two experimental studies, we demonstrate that brief interpersonal contact leads trustors to both (a) become more accurate in their trust decisions and (b) engage in other-focused perspective taking, which mediates the effect of interpersonal contact on trust accuracy. We then show that it is specifically because of verbal cues, rather than visual cues, that brief interpersonal contact enables other-focused perspective taking and, in turn, trust accuracy (Study 3). We contribute to the literature on trust by examining trust accuracy (rather than mere trust levels), identifying the significant role of brief interpersonal contact, and revealing other-focused perspective taking as a key mechanism in accurate swift trust decisions.

  Keywords: Trust; Interpersonal Communication; Judgments; Perspective;

  Citation:

  Schilke, Oliver, and Laura Huang. "Worthy of Swift Trust? How Brief Interpersonal Contact Affects Trust Accuracy." Journal of Applied Psychology 103, no. 11 (November 2018): 1181–1197.  View Details

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• Working Paper | HBS Working Paper Series | 2018

  Product Quality and Entering Through Tying: Experimental Evidence

  Hyunjin Kim and Michael Luca

  Dominant platform businesses often develop products in adjacent markets to complement their core business. One common approach used to gain traction in these adjacent markets has been to pursue a tying strategy. For example, Microsoft pre-installed Internet Explorer into Windows, and Apple set Apple Maps as the iOS default. Policymakers have raised concerns that dominant platforms may be leveraging their market power to gain traction for lower quality products when they use a tying strategy. In this paper, we empirically explore this question by examining Google’s decision to tie its new reviews product to its search engine. We experimentally vary the reviews displayed above Google’s organic search results to show either exclusively Google reviews (Google’s current tying strategy) or reviews from multiple platforms determined to be the best-performing by Google’s own organic search algorithm. We find that users prefer the version that does not exclude competitor reviews. Furthermore, looking at observational data on user traffic to Yelp from search engines, we find that Google’s exclusion of downstream competitors may have been effective. The share of Yelp’s traffic coming from Google has declined over this period, relative to traffic from Bing and Yahoo (which do not exclude other companies’ reviews), and Google reviews has grown quicker than Yelp and TripAdvisor during the period in which they excluded these (and other) reviews providers. Overall, these results shed light on platform strategy: tying has the potential to facilitate entry in complementary markets, even when the tied product is of worse quality than competitors.

  Keywords: Market Entry and Exit; Market Platforms; Competitive Strategy; Product Marketing; Quality;

  Citation:

  Kim, Hyunjin, and Michael Luca. "Product Quality and Entering Through Tying: Experimental Evidence." Harvard Business School Working Paper, No. 19-045, October 2018. (Revised December 2018. Forthcoming in Management Science.)  View Details

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