Research firm Mediaedge:cia has conducted a worldwide study that found 30 percent of young adults 18-34 years old are influenced by celebrities when making product decisions, reports Media Post. The figure more than halved for the next older age demographic, applying to only 14 percent of 35-54 year olds. The firm says celebrity associations also influence word-of-mouth marketing among young adults, with 50 percent of them more likely than those in the older adult bracket to recommend a celebrity endorsed product to their friends. Overall the firm found 29 percent of those surveyed worldwide say celebrities can influence their product choices, while 65 percent among the same set also said there are too many products promoted by celebrities.  Read more at MediaPost.