Hofstede used a term, "The Reverse Ecological Fallacy" to express a caveat (warning) on the use of stereotypes in cross-cultural interactions. Dr. Nicholson used the phrase "Most of the people most of the time, but not all of the people all of the time" to express the same thing regarding the use of cultural value models and stereotypes. To be effective, what do international managers do when they encounter behavior that is different from what they had expected?