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Analysis of Sales Promotion Effects on Household Purchase Behavior

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c<strong>on</strong>sidered brand loyalty to be the deliberate tendency to stay with the brand bought <strong>on</strong> the<br />

last <strong>on</strong>e or more occasi<strong>on</strong>s. Variety seeking is viewed as the deliberate tendency to switch<br />

away from the brand purchased <strong>on</strong> the last <strong>on</strong>e or more occasi<strong>on</strong>s. Brand loyalty is<br />

therefore used as an inverse indicator <str<strong>on</strong>g>of</str<strong>on</strong>g> variety seeking. Other household purchase<br />

characteristics that possibly drive promoti<strong>on</strong> resp<strong>on</strong>se are discussed in the next secti<strong>on</strong>.<br />

3.3 Overview <str<strong>on</strong>g>Promoti<strong>on</strong></str<strong>on</strong>g> Resp<strong>on</strong>se Findings <strong>Household</strong> <strong>Purchase</strong><br />

Characteristics<br />

Besides brand loyalty as discussed in the preceding secti<strong>on</strong>, other household purchase<br />

characteristics (such as store loyalty, shopping frequency, basket size) can influence<br />

promoti<strong>on</strong> resp<strong>on</strong>se. The <strong>on</strong>es we c<strong>on</strong>sider will be discussed separately in the following<br />

three subsecti<strong>on</strong>s. Note that household purchase characteristics influence promoti<strong>on</strong><br />

resp<strong>on</strong>se at another level than household demographics. The purchase characteristics itself<br />

could be dependent <strong>on</strong> the demographic variables. <strong>Household</strong> demographics could<br />

therefore be directly related with sales promoti<strong>on</strong> resp<strong>on</strong>se, but at the same time indirectly<br />

related with sales promoti<strong>on</strong> resp<strong>on</strong>se through the household purchase characteristics. This<br />

distincti<strong>on</strong> between direct and indirect relati<strong>on</strong>s is not incorporated in this study.<br />

Furthermore, <strong>on</strong>e possible criticism <str<strong>on</strong>g>of</str<strong>on</strong>g> the use <str<strong>on</strong>g>of</str<strong>on</strong>g> shopping behavior variables as<br />

explanatory variables is that there could be a circularity problem, since shopping patterns<br />

can be influenced by promoti<strong>on</strong>al activities. For example, if fruit juice is heavily promoted<br />

during the period <str<strong>on</strong>g>of</str<strong>on</strong>g> data collecti<strong>on</strong>, this might induce greater purchasing by a pricesensitive<br />

c<strong>on</strong>sumer. In this example, category intensity becomes a proxy for price<br />

sensitivity. Our view is that this sort <str<strong>on</strong>g>of</str<strong>on</strong>g> phenomen<strong>on</strong>, while undoubtedly present, will have<br />

limited effect <strong>on</strong> our results. These household purchase characteristics are computed as<br />

l<strong>on</strong>g-run averages <str<strong>on</strong>g>of</str<strong>on</strong>g> shopping behavior in which bursts <str<strong>on</strong>g>of</str<strong>on</strong>g> promoti<strong>on</strong>al activities will be<br />

averaged out, resulting in good indicators for the structural household purchase<br />

characteristics.<br />

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