Fig. 1.

(a) Interaction effects between staff positive utterances and resident positive utterances for liquid food (left panel) and solid food (right panel)

Note. The dependent variable (the number of intakes per minute) was back-transformed to the number of intakes per minute. Resident positive utterances = between 0 and 3, male resident, resident eating function = partially dependent, mean resident age, mean number of years staff worked as a caregiver, mean staff positive utterances.

(b) Interaction effect between resident negative utterances and video duration.

Note. Both the dependent variable (the number of intakes per minute) and video duration were back-transformed to the original scales. Resident negative utterances = 0, male resident, resident eating function = partially dependent, mean resident age, mean number of years staff worked as a caregiver, mean video duration