Kerry's positive attitude toward china, even though she has never been there, seems to be related to the fact that her mother is chinese and talks about china all the time with kerry. which method of attitude formation is involved in this example?

Interaction with her mother is the basis of this attitude of Kerry. Being a Chinese, her mother is obviously inclined towards China, and must have been telling Kerry about her experiences in China, which has the foundation of Kerry's thoughts and opinions about China. 

Iam not sure sorry