Table 1.

Variable Items

Items		Source
Familiarity (FAM) α = 0.875		Ng, 2013; Frenzen & Nakamoto, 1993
FAM1	I know my friends on social commerce platforms through information exchange.
FAM2	I know my friends on social commerce platforms by sharing photos.
FAM3	I interact with friends frequently on the social commerce platform.
Intimacy (INT) α = 0.892		Gilly, 1998
INT1	I will discuss personal topics with friends on social commerce sites.
INT2	My friends on the social commerce platform are very sincere, and I believe them.
INT3	I hope to keep a long-term relationship with my friends on the social commerce platform.
INT4	Friends’ recommendations and reviews of goods are a very important to my consumption.
Perceived usefulness (PU) α = 0.909		Davis, 1989; Park, 2009
PU1	The information I get from interactions on social commerce platforms is useful.
PU2	The interaction on the social commerce platform allows me to better understand purchase goals.
PU3	The interaction on the social commerce platform enables me to make purchase decisions faster.
PU4	The information I get from interaction on the social commerce platform is updated timely.
Purchase intention (PI) α = 0.943		Lee and Shin, 2014; Zhang, 1996
PI1	I often want to buy something because of the emotional interaction with others on social commerce platform.
PI2	In social commerce, I want strongly to buy the product if it was recommended by my friends.
PI3	I will buy something because of product recommendations and reviews from my friends.