The optimal level of advertising
... in characteristics and quality space are not strongly based on objective assessments of the product, however, due to varied degree of advertisability for different products, determining persuasive advertising level poses many empirical obstacles when considering cross-section of industries. In Dorfman and Steiner¡¦s model, the assumption is that price advertising level both enter the consumption decision function of consumer, so that quantity purchased is positively depending on the level of adverts and negatively correlated with its price. The model predicts a ratio for advertising expenditure to the total revenue as the product of consumer responsiveness and price-cost margin, hence, at/pq= ƒÑ*1/E. However, the fundamental weakness undermines the reliability of prediction through this model is that the current advertising level enters directly into the demand function rather than indirectly through the accumulation of a stock of goodwill acting on demand, and its failure to account for strategic interplay between major market players. To improve, Nerlove and Arrow proposed amendment based on advertising¡¦s contribution to stock of goodwill, as well as recognising the discounting factor r of extra advertising expenditure and its decaying effects ƒÔ, as a result, the new ratio of advertising expenditure to revenue is expressed as at/pq=ƒÑ/ (r+ ƒÔ). 1/E. Similarly, some other incredible element can be found from this model, such as the unchanging price elasticity of demand, which should be changing with the conjectural variation in competitor¡¦s price, and other firms¡¦ advertising level. The result of including these elements is the rise of a long-term elasticities. While we can see from the graph that NC, the non cooperative equilibrium is given by the intersection of the reaction functions is higher than the NC where assuming a given level advertising level by its competitors. This graphic evaluation is confirming the tacit collusion by firms in oligopoly, where multiperiod interplay will lead firms into cooperative behaviour using the threat of advertising wars. In a nutshell, from this model , the ratio of advertising expenditure to sales is related to the price-cost margin, the elasticity of demand with respect to own advertising and other firms¡¦ advertising, the advertising response of other firms¡¦ to own advertising, the rate of decay of goodwill stock, and the firm¡¦s discount rate. Having identified the consumer responsiveness as a chief determinant of advertising expenditure level, it begs the question of what factors can determine the consumer responsiveness, hence we focus on firm¡¦s own advertising responsiveness and that with respect to competitor¡¦s advertising. In respect to informational advertising, whose characteristics entails three functions: identification of existence of seller, indication of characteristics mix embodied in a product, and the identification of the quality of a product by means of a brand name. Here we will exemplify some results in the light of exploring the consumer responsiveness: firstly, in general an increasing turnover of potential customers in the market leads to an increase in advertising. However, as the turnover becomes larger in relation to the reach of advertising, then a point is reached where the optimal level of advertising diminishes. A simpler interpretation is that a rapid turnover in the market destroys the cumulative effect of informative advertising, so less advertising will be done. This is the finding of Stigler, which also received confirmation in work by Doyle. He showed that greater frequency of purchase of an item was correlated with a smaller advertising-sale ratio, and he attributed the result to the following two factors: the first is that when goods are purchased frequently the identity of the potential market is unlikely to change rapidly between periods. The second is simply that people are much less likely to forget the information which frequent purchase will constantly recall to mind. In addition, referring to the characteristics space identification role of advertising, Grossman and Shapiro show that, in a symmetric Nash equilibrium with firms evenly spread in product space, and with each firm charging the same price and doing the same amount of advertising, advertising expenditures are higher, the smaller the number of firms, and more strongly held are consumers¡¦ preference, (i.e. the psychic transport cost in product space). The way we can analyse this results is from the fact that the fewer firms less advertising is wasted by each firm tell other firms¡¦ consumer about a product that they do not wish to buy, as well as the fact that the more strongly held are the preferences held by consumers, the less elastic is the demand curve facing each firm, hence the greater the profit margin. It is therefore worthwhile for the firm to enable its consumers to identify their most preferred products. Last but not lease, corresponding to the functions of information advertising on quality signal. Nelson made the observation that the amount of search advertising, even if it is totally lacking in informative content, is likely to correlate positively with the quality of the good. The reason is that high quality goods will generate repeat purchases from satisfied customers, so the returns to advertising will be higher, and the more adv. Will be done. Consumers can therefore take high advertising outl...