Table 1.

Task instructions.

Task	Gesture-related attributes	Wording
		“Please press the button if the speaker…” [Ger.: “Bitte drücke den Knopf wenn der Sprecher…”]
Conventionality [CON]	Conventional aspects in gesture	“…produces a hand movement which is commonly used” [Ger.: “…eine Handbewegung macht, die allgemein gebräuchlich ist.”]
Control 1 [ANY]	Physical event of hand movement	“… moves the hands during speaking.” [Ger.: “…seine Hände beim Sprechen bewegt. ”]
Control 2 [REL]	Disambiguation of gesture by accompanying speech	“…produces a hand movement which has a connection to the speech.” [Ger.:“…eine Handbewegung macht, die eine Verbindung zum Gesprochenen hat.”]