Table 1.

Co-occurrence analysis results (Top 10 keywords).

Keyword	Frequency	Year	Centrality
attitude	471	1995	0.03
pro-environmental behavior	450	2005	0.04
planned behavior	334	2003	0.02
determinant	278	2004	0.03
value	256	1998	0.02
intention	251	1995	0.03
model	220	1995	0.06
consumption	171	1991	0.03
climate change	153	2013	0.01
knowledge	138	1998	0.03