Table 2. Design of Study 2.

Condition	Confirmatory Study		Confutative Study
Liking/Disliking	“thumb up”-button (i.e., like)	“thumb down”-button (i.e., dislike)	“thumb up”-button (i.e., like)	“thumb down”-button (i.e., dislike)
Posting Behavior	“Pro comment” textbox (i.e., positive comment)	“Contra comment” textbox (i.e., negative comment)	“Pro comment” textbox (i.e., positive comment)	“Contra comment” textbox (i.e., negative comment)
Content Analysis	Frequency of 5 categories		Frequency of 5 categories
Evaluation	Evaluation of the study (9 items)		Evaluation of the study (9 items)