Validating a Cortisol-Inspired Framework for Human-Robot Interaction with a Replication of the Still Face Paradigm

TL;DR

This paper proposes a cortisol-inspired framework for human-robot interaction, enabling robots to infer human attachment styles based on hormonal responses, validated through a replication of the Still Face paradigm.

Contribution

It introduces a novel cortisol-based cognitive model for robots to assess human attachment styles during interaction, validated with a replication of a key hormonal modulation paradigm.

Findings

The framework successfully inferred attachment styles from hormonal responses.

Replication of the Still Face paradigm validated the cortisol-inspired approach.

The model improved robot adaptability in human-robot interactions.

Abstract

When interacting with others in our everyday life, we prefer the company of those who share with us the same desire of closeness and intimacy (or lack thereof), since this determines if our interaction will be more o less pleasant. This sort of compatibility can be inferred by our innate attachment style. The attachment style represents our characteristic way of thinking, feeling and behaving in close relationship, and other than behaviourally, it can also affect us biologically via our hormonal dynamics. When we are looking how to enrich human-robot interaction (HRI), one potential solution could be enabling robots to understand their partners' attachment style, which could then improve the perception of their partners and help them behave in an adaptive manner during the interaction. We propose to use the relationship between the attachment style and the cortisol hormone, to endow the humanoid robot iCub with an internal cortisol inspired framework that allows it to infer participant's attachment style by the effect of the interaction on its cortisol levels (referred to as R-cortisol). In this work, we present our cognitive framework and its validation during the replication of a well-known paradigm on hormonal modulation in human-human interaction (HHI) - the Still Face paradigm.