A baby boom is any period marked by a greatly increased birth rate. This demographic phenomenon is usually ascribed within certain geographical bounds. People born during such a period are often called baby boomers; however, some experts distinguish between those born during such demographic baby booms and those who identify with the overlapping cultural generations. Conventional wisdom states that baby booms signify good times and periods of general economic growth and stability; however in circumstances where baby booms lead to very large number of children per family unit, such as in the case in lower income regions of the world, the outcome may be different. One common baby boom was right after WWII during the Cold War.