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Quality, value, satisfaction, trust, a

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The variables incorporated in the model were based on previous research on choice models using scanner<br />

panel data. However, an important addition is a variable to incorporate the tradeoffs. Demographic<br />

variables are included to account for some heterogeneity among consumers (we estimate models with and<br />

without demographic variables and the results are consistent). The proposed formulation is compared with<br />

models not incorporating the tradeoffs by means of likelihood ratio tests. Managerial implications can be<br />

delineated by calculating the inter-brand movements after incorporating the tradeoff construct. The<br />

deterministic components of the utilities for several models follow.<br />

Model 1 (model with price, but without tradeoff)<br />

UHi = αHi + θ1DisplayHi + θ2FeatureHi + θ3iFamilysize + θ4iIncome + θ5BrandloyaltyHi + βPriceHi<br />

UL = θ1DisplayL + θ2FeatureL + θ5BrandloyaltyL + βPriceL.<br />

Model 2 (model without price, but with tradeoff)<br />

UHi=αHi+θ1DisplayHi+θ2FeatureHi+θ3iFamilysize+θ4iIncome+θ5BrandloyaltyHi+γ/(PriceHi-PriceL)<br />

UL = θ1DisplayL + θ2FeatureL + θ5BrandloyaltyL.<br />

Model 3 (model with price and tradeoff)<br />

UHi=αHi+θ1DisplayHi+θ2FeatureHi+θ3iFamilysize+θ4iIncome+θ5BrandloyaltyHi+βPriceHi<br />

+γ/(PriceHi- PriceL)<br />

UL = θ1DisplayL + θ2FeatureL + θ5BrandloyaltyL + βPriceL.<br />

Model 4 (parsimonious model with price and tradeoff)<br />

UHi = αHi + θ1DisplayHi + θ2FeatureHi + θ5BrandloyaltyHi + βPriceHi + γ/(PriceHi - PriceL)<br />

UL = θ1DisplayL + θ2FeatureL + θ5BrandloyaltyL + βPriceL.<br />

Operationalization of Variables<br />

Model variables were patterned after existing research investigating substantive topics on quality tier<br />

competition. The idea is to use logically consistent operationalizations that have been utilized in existing<br />

research. Display and feature are categoric variables coded as 1 if present and 0 if absent. Price is the<br />

faced price (for the non-purchased brands) or paid price (for the purchased brands) as has been used in<br />

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