Before revision: Guadagno and her fellow experimenters did a study in 2010 addressing the recruitment of new members by terrorist organization via the internet .Guadagno, R. E., Lankford, A., Muscanell, N. L., Okdie, B. M., & McCallum, D. M. (2010).
After revision: In 2010 , Guadagno and fellow experimenters examined the recruitment methods of terrorist organizations by reviewing research and empirical evidence from literature .Guadagno, R. E., Lankford, A., Muscanell, N. L., Okdie, B. M., & McCallum, D. M. (2010).