Amid a global caregiver shortage and a growing reliance on assistive technology, this research investigates the intricate interactions between caregivers and care recipients in elder care settings, primarily focusing on caregivers’ verbal utterances and the conditions under which these exchanges occur. Drawing on Weiner’s causal attribution theory, we developed a typology of caregiver utterances that prompt shifts in care recipients’ attributions during the use of assistive technology. This typology—comprised of ’praise’, ’affirmation /acceptance’, ’confirmation’, and ’feedback’ categories—illuminates key links between caregiver communication strategies and care recipients’ perception shifts. Notably, ’confirmation’ utterances tend to align with attributions to ’ability’, whereas ’feedback’ utterances correspond more closely with ’effort’. Our analysis of temporal fluctuations revealed significant changes in the frequency of these utterances throughout various stages of assistive technology usage. By offering a holistic understanding of these complex dynamics, this study seeks to shape the development of more effective caregiver communication strategies. Such enhancements are pivotal to optimize care recipients’ experiences and engagement with assistive technology, thus addressing the ongoing caregiver deficit. Future research endeavors will expand our dataset and examine the potential generalizability of our findings to other caregiving environments.