It is conclusive that neonicotinoids alter navigation in bees when locating food sources. http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0091364
But if so, shouldn't cognition also be affected? And if it is affected, then wouldn't the effect on the hive be even more pronounced due to inaccurate bee dances and an overall delay/inability in finding food source? Shouldn't this be conclusive in explaining neonicotinoids to be a contributor to colony collapse disorder?