It can be clearly seen that generational attitudes have influence upon thinking and behavior. A generation can be considered a segment of the population who have shared experiences and have a sense of history that influences their thinking and behavior today. In Western countries like the United States and Canada in North America, most countries in Western Europe, Australia and New Zealand can be considered to have three distinct generations that influence society today, the baby boomers, generation X and generation Y. The baby boomer generation came in a mass population bubble after World War Two until around 1964. Generation X are the children of the baby boomers born between 1965 and 1979. Generation Y are the children of generation X couples and include those born between 1980 and 1999.