My dissertation examines justification work across three sites where care technologies surface moral challenges for older adults and caregivers. I ask: how do people interpret, negotiate, and resolve the moral tensions that emerge when care practices are mediated by new technologies?

1. Conversational agents for care communication
How voice-based systems mediate and reshape the communicative practices through which caregivers coordinate and negotiate the meaning of "good care."

2. Algorithmic staffing platforms for paid home care
How platform logics of efficiency collide with care workers' moral commitments, producing new forms of evaluative opacity.

3. Fall prevention technologies
How predictive and monitoring systems reconfigure the moral landscape of autonomy, risk, and interdependence in aging.

I draw on the sociology of morality (Abend's moral background, Tavory's formalist approach to moral actions, Livne's economization), valuation studies (Thévenot's regimes of engagement), and FATE scholarship to develop "justification work" as a bridging concept between values-in-design and empirical aging research.

The core contribution is to show how care functions as a revelatory site for understanding the moral transformations technology produces — not because care is uniquely moral, but because the moral dimensions of care are especially legible and consequential.