Three items assess how similar a core brand and a proposed brand extension are in terms of when and how they are used and whether they would be used together.
Response format not stated; likely 7-point
Full scale items shown. Always cite the original source when using this scale in research.
Based on measures by Chakravarti, MacInnis, and Nakamoto (1989). Alpha .82. Blanks in items should be replaced with the two brand/product names being compared.
Martin, I. M., & Stewart, D. W. (2001). The differential impact of goal congruency on attitudes, intentions, and the transfer of brand equity. Journal of Marketing Research, 38(4), 471–484.
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