The finding by Ahluwalia et al. (2000) was the basis of the research by Sen et al. (2007) who applied this to their research about both positive as well as negative reviews in an online world, differentiating between hedonic versus utilitarian products. They found a negativity bias only in the case of utilitarian products, which means that readers do pay more attention to negative reviews and besides that, do trust the negative reviews more when it concerns products serving to satisfy practical needs like for example a dishwasher or a lawn mower. Regarding hedonic products consumers probably are positively disposed concerning the product, therefore they might ignore negative reviews because it is inconsistent with their prior expectations and thus are intended to evaluate the products positively. So, the effect of negative or positive sentiments a review has on either source or message credibility or the buying intention, depends on the type of product, a product that either demands for high or low consumer involvement, and the possible prior impression the review reader has in mind about that particular brand (Herr et al., 1991, Park & Lee, 2009).