Human needs can be categorized into thoughts, feelings, and behaviors. Maslow felt that basic needs had to be met before higher order needs could be met, which is often depicted in a pyramid. It is true that meeting physical needs provides the strength to meet other needs, and the less time devoted to meet physical needs, the more time available to meet other needs. But cognitive needs influence choices about meeting emotional and physical needs. And interactions with others not only meet emotional needs but are the primary means of meeting many needs, whether in single exchanges or ongoing relationships. Meeting these needs involves choices. These choices are influenced by uncertainty, moral development, social influence, and personality traits.