Table 1.

Definition of variables.

	Variables	Definition	References
Independent variables	Comment quantity	Comment quantity can enrich the comment information and increase the total amount of information.	Liu and Tang (2016)
	Comment quality	The description integrity and product richness of the comment information, the objectivity of the comment sender, whether or not valuable information was provided	Hung (2017) and Park et al. (2007)
	Comment titer	Direction of the comment content, including positive, neutral, negative	Pumawirawan et al. (2012)
	Evaluator credibility	Evaluator's professionalism and reliability	Schiffman and Kanuk (1997)
mediation variables	Time distance	Time distance refers to people's perception of events about time.	Bar-Anan et al. (2007)
	Social distance	Based on the self, the individual's perception of the distance between the subject and the self.	Fujita et al. (2006)
	Spatial distance	It refers to an individual's spatial or geographical proximity between himself/herself and the reference object.	Ma (2016)
Dependent variable	Green housing purchase intention	Effect of the comment on the information recipient's willingness to buy	Bansal and Voyer (2000)