TY - BOOK AU - Lou,Weifang AU - Prentice,David AU - Yin,Xiangkang TI - The effects of product ageing on demand: the case of digital cameras T2 - Discussion papers SN - 9781921377518 U1 - 681.418 21 PY - 2008/// CY - Bundoora, Vic. PB - La Trobe University. School of Business KW - CAMARAS DIGITALES KW - ELASTICIDAD DE LA DEMANDA KW - PREFERENCIAS DEL CONSUMIDOR KW - ESTADOS UNIDOS N1 - Incluye referencias bibliográficas N2 - The static differentiated product demand model when applied to products with rapid product turnover and declining prices, yields implausible results. One response is to explicitly model the inter-temporal choices of consumers but computational demands require restrictive assumptions on consumer heterogeneity and limits on the characteristics included in the model. We propose, instead, to supplement the static model with a control for the age that each product has been in the market. This approach is applied to the US digital camera market and we find we obtain more plausible estimates. Our results are consistent with inter-temporal price discrimination by firms. Furthermore, our results suggest that ignoring the effects of product ageing may result in substantially overestimated price elasticities and technological progress and underestimated price-cost markups UR - www.latrobe.edu.au/__data/assets/pdf_file/0016/130912/2008.06.pdf ER -