“…The effects of expressiveness on experiential states seemed to depend upon the type of expressiveness [62,68,115,128]. In general, robot characteristics had minor or inconsistent influences on children's affect [69,104,106,115,118,128,147]. With respect to the effects of interaction styles on experiential states, strategic interaction seemed to stimulate engagement [20,21,57,73,88,103,127], as well as enjoyment and liking [20,47,60], while emotional and memory-based interaction were positively associated with engagement [2, 4,29,53,82].…”