Effects of comparative feedback from a Socially Assistive Robot on self-efficacy in post-stroke rehabilitation

Abstract

Abstract-We present a study with an autonomous Socially Assistive Robot (SAR) coach that investigates the effect of comparative feedback given by a SAR on the self-efficacy of individuals post-stroke in a seated reaching task. We compare two types of feedback, self-comparative and othercomparative, against a control of no comparative feedback, with 23 participants post-stroke. We find that participants receiving other-comparative feedback have significantly more delay time on the task than participants receiving self or no comparative feedback. In addition, we demonstrate that participants show task performance improvement over time, and provide responses to self-efficacy probes that vary along several dimensions.

Motivational Effects of Acknowledging Feedback from a Socially Assistive Robot

“…Both works support that individualized feedback based on the user's performance can increase the tutor's effectiveness. A different study compares self-comparative vs. other-comparative to non-comparative feedback in a push-button task [9]. However, the authors could not find evidence for any of their hypotheses.…”

“…While other types of feedback (i.e. positive, negative, comparative or corrective feedback) have been studied in Human-Robot Interaction (HRI) [8][9][10], the quantitative effects of acknowledgement while working out with a robot have not been compared to a baseline measurement. Because most of the published studies comparing different types of feedback are lacking comparative results to baseline studies with no robot or no feedback, it is difficult to distinguish the true motivational effects of SAR.…”

A Robot Goes to Rehab: A Novel Gamified System for Stroke Rehabilitation using a Socially Assistive Robot: Methodology & Feasibility Testing

“…Previous works (13)(14)(15)(16), on short-term interactions with an SAR, suggest that incorporating SARs into a practice regime that calls for repetitive tasks can increase stroke patients' motivation. In previous works, patients were asked to do tasks such as magazine stacking (16), button pressing (15) or to imitate movements made by the robot (16) while receiving feedback from an SAR in a one-session interaction.…”

Mutual Shaping in the Design of Socially Assistive Robots: A Case Study on Social Robots for Therapy

“…Research in these areas has shown that SARs can have an impact on enjoyment and engagement with health and wellbeing related exercises (e.g. [13,16,32,35]). We propose the use of a social robot to motivate and engage with rehabilitative therapy patients, and are working to identify the social cues and behaviours such a robot should employ to enhance adherence to therapy.…”