Warranty Signalling and Reputation
用信号理论解释为何质量较低的产品可能提供更长的保修期，原因在于消费者对老牌和新产品可靠性的认知差异。
In this paper, we present a signalling-based explanation for the empirical phenomenon that a longer warranty may be offered by a product with lower quality. Our explanation hinges on differences in consumer knowledge about reliability of established and newer products. In a product market where a new entrant competes with an established product, we show that signalling behavior leads to an outcome where the less reliable product may carry the longer warranty.