(from the article `collective behaviour`) Finally, the effect of collective behaviour depends upon the ubiquitous process of conventionalization. In a spontaneous fad or mob action, ... Found on http://www.britannica.com/eb/a-z/c/136
Con·ven`tion·al·i·za'tion noun (Fine Arts) (a) The act of making conventional. (b) The state of being conventional. Found on http://www.encyclo.co.uk/webster/C/152