Key points are not available for this paper at this time.
Srinivas K. Reddy, Susan L. Holak, Subodh Bhat, To Extend or Not to Extend: Success Determinants of Line Extensions, Journal of Marketing Research, Vol. 31, No. 2, Special Issue on Brand Management (May, 1994), pp. 243-262
Reddy et al. (Sun,) studied this question.