No Joke: An Embodied Conversational Agent Greeting Older Adults with Humour or a Smile Unrelated to Initial Acceptance

TL;DR

This study investigates whether humorous or smiling ECAs influence older adults' acceptance, finding limited effects and questioning their use for initial engagement.

Contribution

It introduces three versions of ECAs with different expressions to evaluate their impact on older adults' acceptance.

Findings

No significant effect of humor or smiles on acceptance

Positive attitudes towards technology correlated with acceptance

Laughter and jokes may not enhance initial engagement for older adults

Abstract

Embodied conversation agents (ECAs) are increasingly being developed for older adults as assistants or companions. Older adults may not be familiar with ECAs, influencing uptake and acceptability. First impressions can correlate strongly with subsequent judgments, even of computer agents, and could influence acceptance. Using the circumplex model of affect, we developed three versions of an ECA -- laughing, smiling, and neutral in expression -- to evaluate how positive first impressions affect acceptance. Results from 249 older adults indicated no statistically significant effects except for general attitudes towards technology and intelligent agents. This questions the potential of laughter, jokes, puns, and smiles as a method of initial engagement for older adults.