Background: Abraham Harold Maslow (; April 1, 1908 - June 8, 1970) was an American psychologist who was best known for creating Maslow's hierarchy of needs, a theory of psychological health predicated on fulfilling innate human needs in priority, culminating in self-actualization. Maslow was a psychology professor at Alliant International University, Brandeis University, Brooklyn College, New School for Social Research, and Columbia University. He stressed the importance of focusing on the positive qualities in people, as opposed to treating them as a "bag of symptoms." A Review of General Psychology survey, published in 2002, ranked Maslow as the tenth most cited psychologist of the 20th century.
Context: Maslow's thinking was original. Most psychologists before him had been concerned with the abnormal and the ill. He urged people to acknowledge their basic needs before addressing higher needs and ultimately self-actualization. He wanted to know what constituted positive mental health. Humanistic psychology gave rise to several different therapies, all guided by the idea that people possess the inner resources for growth and healing and that the point of therapy is to help remove obstacles to individuals' achieving them. The most famous of these was client-centered therapy developed by Carl Rogers.  The basic principles behind humanistic psychology are simple: 1. Someone's present functioning is their most significant aspect. As a result, humanists emphasize the here and now instead of examining the past or attempting to predict the future. 2. To be mentally healthy, individuals must take personal responsibility for their actions, regardless of whether the actions are positive or negative. 3. Each person, simply by being, is inherently worthy. While any given action may be negative, these actions do not cancel out the value of a person. 4. The ultimate goal of living is to attain personal growth and understanding. Only through constant self-improvement and self-understanding can an individual ever be truly happy.  Humanistic psychology theory suits people who see the positive side of humanity and believe in free will. This theory clearly contrasts with Freud's theory of biological determinism. Another significant strength is that humanistic psychology theory is compatible with other schools of thought. Maslow's Hierarchy is also applicable to other topics, such as finance, economics, or even in history or criminology. Humanist psychology, also coined positive psychology, is criticized for its lack of empirical validation and therefore its lack of usefulness in treating specific problems. It may also fail to help or diagnose people who have severe mental disorders.
Question: Did he define the basic needs?. Whats the answer?