Lachlan Deer

Lachlan Deer

Assistant Professor

Tilburg University

Biography

I am an Assistant Professor in the Marketing Group at Tilburg University.

My research develops quantitative models that guide managerial decision-making and inform public policy in the following areas:

  • Social media’s impact on consumer demand
  • Effectiveness of mental health awareness campaigns
  • Social networks and their impact on protests
  • Regulation of TV advertising

News: Starting in mid-2025, I will be joining the Department of Management and Marketing at the University of Melbourne as an Assistant Professor (Lecturer in Australia).

Interests
  • Quantitative Marketing
  • Digital Marketing
  • Entertainment Industries
  • Public Policy
Education

  • PhD in Economics, 2019

    University of Zurich

  • MSc. in Economics, 2013

    University College London

  • MPhil. in Economics, 2012

    University of Adelaide

  • B. Economics (Hons.), 2009

    University of Adelaide

Research

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Working Papers Publications In Progress Replication Reports
Lachlan Deer, Adithya Krishna, Lyla Zhang (2025). Replication Report: Corrupted by Algorithms? How AI-generated And Human-written Advice Shape (Dis) Honesty. I4R Discussion Paper Series No. 212.

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Nick Huntington-Klein, Claus C. Pörtner, and many others including, Lachlan Deer (2025). The Sources of Researcher Variation in Economics. Working Paper.

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Nicole Black, Lachlan Deer, David Johnston, Johannes Kunz (2025). Are You Okay? The Effect of a National Peer-based Support Campaign on Mental Health. Working Paper, 2nd Round R&R at Journal of Marketing.

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Lachlan Deer, Susanne Adler, Hannes Datta, Natalie Mizik, Marko Sarstedt (2025). Toward Open Science in Marketing Research. International Journal of Research in Marketing.

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Abel Brodeur, David Valenta, Alexandru Marcoci, Juan P. Aparicio, Derek Mikola, Bruno Barbarioli, Rohan Alexander, Lachlan Deer, Tom Stafford, Lars Vilhuber, and many others (2025). Comparing Human-Only, AI-Assisted, and AI-Led Teams on Assessing Research Reproducibility in Quantitative Social Science. I4R Discussion Paper Series No. 195, R&R at Nature.

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Lachlan Deer, Chih-Sheng Hsieh, Michael Koenig, Fernando Vega-Redondo (2024). Social networks and collective action in large populations: An application to the Egyptian Arab Spring. Working Paper.

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Abel Brodeur, Derek Mikola, Nicolai Cook, and many others including, Lachlan Deer (2024). Mass Reproducibility and Replicability: A New Hope. I4R Discussion Paper Series No. 107.

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Lachlan Deer, Yi-Shan Lee (2024). Social Norms in Information Utilization. In Progress.

Lachlan Deer, Sigmund Ellingstrud, Amund H. Kordt, Felix Heuer (2023). Replication Report: Concentration Bias in Intertemporal Choice. I4R Discussion Paper Series No. 42.

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Lachlan Deer, Pradeep K. Chintagunta, Gregory S. Crawford (2022). Online Word of Mouth and the Performance of New Products. Working Paper.

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Lachlan Deer, Pradeep K. Chintagunta, Gregory S. Crawford (2020). How does Advertising Influence Online Word of Mouth? Evidence from Twitter. In Progress.

Ranoua Bouchouicha, Lachlan Deer, Ashraf Galal Eid, Peter McGee, Daniel Schoch, Hrvoje Stojic, Jolanda Ygosse-Battisti, Ferdinand M. Vieider (2019). Gender Effects for Loss Aversion - Yes, No, Maybe?. Journal of Risk and Uncertainty.

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Lachlan Deer (2019). An example preprint / working paper.

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Gregory S. Crawford, Lachlan Deer, Jeremy Smith, Paul Sturgeon (2017). The Regulation of Public Service Broadcasters - Should there be more advertising on television?. Working Paper.

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Lachlan Deer, Ralph C. Bayer (2016). Commitment and Cooperation in Partnerships. Games, 7(1), 4.

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Lachlan Deer, Robert Ford (2015). An example journal article. Journal of Source Themes, 1(1).

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Lachlan Deer, Robert Ford (2013). An example conference paper. In ICW.

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Teaching

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At Tilburg Short Courses Programming Practices
Social Media and Web Analytics

Social Media and Web Analytics

Develops an analytics toolkit for studying digital markets and social media.

Recent Course Material GitHub Page Archived Course Material (2022)
Digital and Social Media Strategies

Digital and Social Media Strategies

Introduces students to digital marketing with an emphasis on recent academic research in quantitative marketing and field experiments. Targeted at undergraduate students.

Recent Course Material Archived Course Material (2024)
Using Text as Data in Empirical Economics Research

Using Text as Data in Empirical Economics Research

Text as data workshop at the Center for Health Economics at Monash University.

Course Homepage
Using Text as Data in Marketing Research

Using Text as Data in Marketing Research

Text as data workshop at the University of Adelaide Business School.

Course Homepage
Programming Practices for Research Students

Programming Practices for Research Students

Aims to improve programming and data practices of early careeer researchers. Targeted at graduate students & researchers in business and economics. Taught at University of Zurich

Programming Practices Homepage GitHub Page
The Carpentries

The Carpentries

Teaches foundational coding, and data science skills to researchers Targeted at graduate students & researchers.

Carpentries Homepage

Contact