Yuan Fang

ABSTRACT This paper uses abduction to propose a theory of addictive desire that is based on a dual dysfunction in learning and motivation. The theory is termed the Coherent Dual Theory of Addictive Desire (CDT) because it proposes that a dual dysfunction lies at the heart of addictive desire. This paper first lays out CDT in psychological terms. It then focuses on how CDT coheres with both the neurobiology and phenomenology of addictive desire, granting the theory empirical support and more explanatory power. The paper concludes by addressing an objection from opponent process theory. The result is a theory of addictive desire that contains multiple abductive virtues: It is simple, general, testable, and coherent on the levels of neurobiology, psychology, and phenomenology.

In this paper, I propose an account of behavioral addiction in terms of what I call addictive motivational scaffolds (AMSs). Taking inspiration from recent work concerning psychiatric externalism and addiction, I propose and describe the concept of motivational scaffolding: external structure that enhances, supports, or regulates motivational processes in the mind-brain. I then argue that some motivational scaffolds are likely difference-makers in that they make an activity more addictive. The paper proceeds in three main parts. First, I describe the concept of a motivational scaffold and how it builds on recent literature in 4E cognition/psychiatric externalist accounts of addiction. Using gambling and gaming as paradigm cases of addictive activities, I then identify and empirically justify four addictive motivational scaffolds (AMSs): (1) quantified metrics, (2) reward uncertainty, (3) short time-horizon to reward, and (4) physically salient features. Finally, I apply my account to social media to showcase its philosophical usefulness: analyzing behavioral addiction in terms of AMSs uniquely elucidates the more _structural_ aspects of the addictiveness of social media, which are undertheorized.