upward-sloping demand curve

Upward-sloping demand curveclick for a larger image
Fig. 191 Upward-sloping demand curve.

upward-sloping demand curve

a DEMAND CURVE that shows a direct rather than an inverse relationship between the price of a product and quantity demanded per period of time, over part or all of its length.

Most demand curves are based on the assumption that consumers are rational in buying products and have full knowledge of price and product characteristics. Where either of these assumptions is modified then the DEMAND FUNCTION can result not in a normal product as in Fig. 191 (a) but in an upward-sloping demand curve as in Fig%. 191 .

In Fig. 191 (a), if price increases from OP1 to OP2, quantity demanded falls from OQ1 to OQ2. In Fig%. 191, if price increases from OP1 to OP2, quantity demanded increases from OQ3 to OQ4. This can be because of:

  1. conspicuous consumption (see VEBLEN EFFECT);
  2. a real or perceived belief that as price increases quality improves;
  3. or because the product is a GIFFEN GOOD. See also INCOME EFFECT, ENGELS LAW.
Collins Dictionary of Economics, 4th ed. © C. Pass, B. Lowes, L. Davies 2005
References in periodicals archive ?
This leads to an upward-sloping demand curve for housing.
Invoking condition (6), consumers in group one will have an upward-sloping demand curve because:
The upward-sloping demand curve is the result of an externality.
On the demand side, a similarly constituted externality can produce the upward-sloping demand curves that are thought to be produced by preferences such as desires to mimic the behavior of others.
The results from previous RDA (e.g., Foxall & James, 2001, 2003; Foxall et al., 2004) reflect this empirical foundation by showing mixed relative demand curves for purchasing data from individuals as well as aggregated across purchasers and stores, where the regression lines show either neutral, downward-, or upward-sloping demand curves. This is most likely because consumers usually spend only a small part of their discretionary income on individual items in retail stores, and therefore the aversive consequence of paying a higher price for a product might be comparably weak compared with the habitual consequence of saving time and effort of searching for a product.
Restaurant eating and attending a concert (Becker 1991), housing (Dusansky and Wilson 1993), conspicuous consumption goods such as fashionable clothes and jewels (Veblen 1934; Corneo and Jeanne 1997) are examples of goods that may exhibit upward-sloping demand curves. In each of these examples, a special feature of the good alters the properties of the demand function: social interaction for restaurant eating and attending a concert; speculative price effects for housing; and demonstration effects for conspicuous goods.
For fruit juice, however, in this study, the upward-sloping demand curves suggest that these consumers did not find the brands substitutable for one another and hence these consumers were less sensitive to moderate price differences.