How to Collect Haptic Expressions of Spontaneous Emotions? Methodological Considerations

Eliciting emotions to collect affective expressions is frequently used in studies about facial, spoken or bodily expressions of emotions. However, recent works in affective hap tics focus mostly on expressions of acted emotions. The expression of spontaneous emotions using the haptic modality remains unexplored. This paper discusses methodological considerations for designing experimental protocols to collect haptic expressions of spontaneous emotions. We highlight the main difficulties to solve, provide illustrative examples from several experiments that we conducted, and describe methodological considerations for eliciting emotions and collecting corresponding haptic expressions.