A Science Odyssey 3 Guests wearing a Sigmund Freud mask.  Spotlight on Guest 3.

What influences personality?

How a person behaves depends on how that person's needs are being met. Some needs are more fundamental than others. I've actually outlined a person's needs in a hierarchy -- ranking them from the most fundamental needs to those that are less fundamental.

Here's an example of how a human's needs relate to each other: Someone who is starving isn't concerned with issues such as the need to feel accepted by his peers. That same hungry person, when suddenly deprived of oxygen, is no longer concerned with the need for food, but with getting air into his lungs.

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