“The object is wonderful or prickly": how different object properties modulate behavior in a joint context.

This study investigated whether the interaction with objects could be modulated by the real presence of another person. We used a “joint paradigm” in which participants performed the task while another person was just sitting in front of them (Social condition) or interacting with them (Joint condition). Kinematics measures showed how comprehending sentences referring to objects and to others influenced overt movement.