Koray Çalışkan

Representation and performativity, distributed: A response to Curran

Koray Çalışkan, Donald Mackenzie, Simone Polillo, Sevde Nur Unal

Abstract This contribution responds to Curran’s critique of our meta-theoretical account of performativity. Developing a distributed account of representation within the DARN framework, which systematizes the performativity literature through four interconnected modes (devices, actors, representations, and networks), we argue that representation retains …

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Michel Callon [1945–2025] : une vie de passion pour l’économie

Koray Çalışkan, Alexandre Mallard

Está demostrado que los inmigrantes sufren desigualdades en materia de salud y acceso a la atención sanitaria. A partir de una investigación cualitativa sobre el acceso a la atención sanitaria de mujeres inmigrantes con una enfermedad oncológica que viven en Padua (Italia), …

Review of “Trading Beyond Understanding: Machine Learning, Risk, and Markets”

Koray Çalışkan

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Economizing attention: Markets and barter in video advertising platforms

Koray Çalışkan, Donald A. MacKenzie

Digital video advertising has become the world's largest platform-economized form of visibility, yet it remains strikingly opaque to viewers and underexamined by social scientists. This paper examines how digital video advertising economies are produced and maintained across platforms such as TikTok, YouTube, …

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Superplatform: A framework to analyse and regulate Google’s online ad ecosystem

Koray Çalışkan, Donald A. MacKenzie, Addie McGowan

The concept of the "superplatform" presents a simple way to describe Google’s vast and complex online ad business as a dual-core system that merges market power, infrastructural dominance, and supply chain demarketisation.

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Michel Callon (1945–2025): A life with passion for economies

Koray Çalışkan, Alexandre Mallard

Michel Callon passed away on 28 July 2025. He was one of the most quietly influential academics in the contemporary social sciences – a thinker whose subtle yet profound insights reshaped the way w...

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Ecologization, part 2: Practices, strategies and devices for managing assets-actifs

Michel Callon, Koray Çalışkan, Donald A. MacKenzie

In two instalments, this paper analyses ecologization as an emergent mode of economization. The first instalment proposed a new definition of economic activities that addresses today’s ecological challenges. This second instalment identifies the activities involved in ecologization processes and how human actors …

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The modes of performativity: A meta-theoretical review

Sevde Nur Unal, Simone Polillo, Koray Çalışkan, Donald A. MacKenzie

Abstract Over the past 25 years, performativity has emerged as a salient focus in social sciences, yet its meta-theoretical analysis remains limited. What is performativity? How is it located empirically and treated theoretically across disciplines? Analyzing 6,741 published articles and books deploying …

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Prodexchange: Digital–industrial economization in Google Search supply chain

Koray Çalışkan, Donald A. MacKenzie, Addie McGowan

Using Google as a case study, this paper analyzes the online advertising sector's search industry. Arguing that search engines are not engines, it examines Google Search as a supply chain composed of five nodes: Crawler, Indexer, Ranker, Publisher, and Data Center. The …

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Ecologization, part 1: Towards assets-actifs and care practices

Michel Callon, Koray Çalışkan, Donald A. MacKenzie

This paper analyses the emergence of a new mode of economization: Ecologization. Drawing on Caliskan and Callon’s programmatic articles on economization and marketization, it prototypes an approach to make visible and analyse ecologization in its emergent phase. We define ecologization as the …

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Stacked economization: a research program for the study of platforms

Koray Çalışkan, Donald A. MacKenzie, Michel Callon

Conceived as a sequel to our papers on economization and marketization (Caliskan and Callon 2009; 2010), This article presents a research program for analyzing platforms. Caliskan and Callon (2009) have defined economization as the design and qualification of devices, agencies, representations, networks, …

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Review Symposium: Michel Callon’s Markets in the Making: Rethinking Competition, Goods, and Innovation . Zone Books

Michel Callon, Paul Langley, Bill Maurer, Timothy F. Mitchell et autres

Economies are changing more quickly than the theories trying to explain them. It’s like a fleet of yachts pursued by a dinghy. In this little craft stand three big – and competing – perspectives. T...

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