Protocol for assessing affective responses in caregiver-infant dyads during the still-face procedure using infrared thermal imaging

Here, we present a protocol for assessing thermal affective responses in caregiver-infant dyads during the still-face procedure (SFP) using infrared thermal imaging (ITI). We describe steps for preliminary experiment design and setup and data collection. We then detail a pipeline to preprocess and analyze dual ITI data and discuss relevant technical issues. We also provide possible future adaptations of this protocol to study natural interactive exchanges in typical and atypical pediatric populations. For complete details on the use and execution of this protocol, please refer to Nazzari et al.¹.