Resistiveness to care (RTC) is common in older adults with dementia. RTC disrupts nursing care, increasing costs of care by 30%. Elderspeak (infantilizing communication used by nursing staff) may trigger RTC in individuals with dementia. Videotaped care episodes (N=80) of nursing home residents with dementia (N=20) were coded for type of staff communication (normal talk and elderspeak) and subsequent resident behavior (cooperative or RTC). Bayesian statistical analysis tested relationships between staff communication and subsequent resident RTC. The probability of RTC varied significantly with communication (Bayes p = .0082). An increased probability of RTC occurred with elderspeak (.55, CrI = .44 -.66), compared to normal talk (.26, CrI = .12-.44). Communication training has been shown to reduce elderspeak and may reduce RTC in future research.