A multiple-item likert scale designed to measure the degree of importance interpersonal information sources have to a person when shopping for a certain product.
5-point Likert (1=strongly disagree, 5=strongly agree)
Full scale items shown. Always cite the original source when using this scale in research.
Reported alpha coefficients range from .842 to .864 across samples or studies. Factor analytic procedures were used to support the scale's structural validity. 5-item index isolating interpersonal/informal information channels from commercial sources (e.g., TV advertising, travel brochures). Personal sources load as a single factor; commercial sources factor separately. Empirically demonstrates that reliance on friends and neighbors increases with age while family reliance decreases relative to younger cohorts. Also grounded in: Capella, L. M., & Greco, A. J. (1987). Information sources of elderly for vacation decisions. Journal of Travel Research, 26(2), 6–10. Previously unconfirmed (cited as Greco, Paksoy & Robbins 1989); correct primary sources confirmed as Greco (1988) and Capella & Greco (1987).
Greco, A. J. (1988). The elderly market: An empirical look at consumer choice and information source utilization. Journal of Consumer Marketing, 5(1), 45–53.
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