Sufficient Presence: A Philosophical Investigation into the Efficacy of Online Psychotherapy and What It Reveals About the Nature of the Therapeutic Bond

Online psychotherapy works as well as in-person therapy for many mental disorders, but this does not disprove that genuine human connection requires embodiment and co-presence. Instead, the therapeutic bond is a layered experience with different requirements for each layer; some can be mediated by technology while others cannot. Human therapists, even when present only through a screen, can meet the necessary conditions for effective therapy, but generative AI systems have not yet done so. The essay proposes a third path beyond simply taking sides in the debate between clinical evidence and philosophical principles.

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Abstract

This essay departs from an apparent paradox at the center of contemporary clinical psychology: controlled studies consistently demonstrate that psychotherapy conducted through digital means yields clinical outcomes equivalent or comparable to face-to-face modalities across a wide range of mental disorders. Yet phenomenology and enactivism maintain that genuine human bonding requires embodiment, co-presence, and shared vulnerability — conditions that technological mediation fulfills only partially. Rather than resolving this tension by taking sides, the present essay treats it as a philosophical object and proposes a third interpretive path. The central hypothesis is that the documented efficacy of online psychotherapy does not refute the ontological foundations of care; on the contrary, it renders them more complex, revealing that the therapeutic bond is a stratified experience whose layers carry distinct ontological requirements and varying degrees of mediability. The positive clinical outcomes obtained in digital modalities depend on specific conditions that a human therapist — even when present only through a screen — is capable of meeting, and that generative artificial intelligence systems have not yet met. The essay draws on the work of Flückiger et al. (2018), Norcross and Lambert (2019), Merleau-Ponty (1945), Di Paolo (2005), Fuchs and De Jaegher (2009), Tschacher et al. (2014), Feijoo (2021), Insel and Sahakian (2026), and Bienenfeld and Torous (2025), among other