More than a half century ago, whitin (1957) hypothesized that an increase in the size of the merchandising display could account for increased sales of select items.

Introduction
In the retail literature, it is a well-established phenomenon that merchandising displays influence retail sales. More than a half century ago, Whitin (1957) hypothesized that an increase in the size of the merchandising display could account for increased sales of select items. Similarly, Wolfe (1968) suggested unit sales are, in part, proportional to the size of the display. More recently, Larson and DeMarais (1999) and Dubelaar et al (2001) used the term “psychic stock” to model the relationship between displayed inventory and stimulated demand.

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