See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/274633640 The effects of advertisement variation and need for cognition on product attitudes over time Article · January 2012 CITATIONS 2 READS 36 2 authors: Stephen Nettelhorst South East Missouri State University 15 PUBLICATIONS 17 CITATIONS SEE PROFILE Robert J. Youmans Google Inc., United States, Mountain View, CA 36 PUBLICATIONS 200 CITATIONS SEE PROFILE All content following this page was uploaded by Stephen Nettelhorst on 09 April 2015. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.