I have relied on the Marketing Scales Handbooks over several years in academic and industry roles and look forward to using the newest edition. A seven on a seven-point satisfaction scale!
Endowment Effect from eWOM
Three, seven-point items measure how much a consumer values a product after reading a wide range of reviewer opinions about it compared to how much it was valued before being exposed. As phrased in the items, the opinions come from electronic word-of-mouth (eWOM) such as posted at websites of retailers, manufacturers, and others.