Many philosophers and psychologists have identified a trait in most living organisms which can drive the particular organism to compete. This trait, unsurprisingly called competitiveness, is viewed as an innate biological trait which coexists along with the urge for survival. Competitiveness, or the inclination to compete, though, has become synonymous with aggressiveness and ambition in the English language. More advanced civilizations integrate aggressiveness and competitiveness into their interactions, as a way to distribute resources and adapt. Most plants compete for higher spots on trees to receive more sunlight. However, Stephen Jay Gould and others have argued that as one ascends the evolutionary hierarchy, competitiveness (the survival instinct) becomes less innate, and more a learned behavior. The same could be said for co-operation: in humans, at least, both co-operation and competition are considered learned behaviors, because the human species learns to adapt to environmental pressures. Consequently, if survival requires competitive behaviors, the individual will compete, and if survival requires co-operative behaviors, the individual will co-operate. In the case of humans, therefore, aggressiveness may be an innate characteristic, but a person need not be competitive at the same time, for instance when scaling a cliff. On the other hand, humans seem also to have a nurturing instinct, to protect newborns and the weak. While that does not nece sitate co-operative behavior, it does help. The term also applies to econometrics. Here, it is a comparative measure of the ability and performance of a firm or sub-sector to sell and produce/supply goods and/or services in a given market. The two academic bodies of thought on the assessment of competitiveness are the Structure Conduct Performance Paradigm and the more contemporary New Empirical Industrial Organisation model. Predicting changes in the competitiveness of business sectors is becoming an integral and explicit step in public policymaking. Within capitalist economic systems, the drive of enterprises is to maintain and improve their own competitiveness. Hypercompetitiveness The tendency toward extreme, unhealthy competition has been termed hypercompetitiveness. This concept originated in Karen Horney's theories on neurosis; specifically, the highly aggressive personality type which is characterized as "moving against people". In her view, some people have a need to compete and win at all costs as a means of maintaining their self-worth. These individuals are likely to turn any activity into a competition, and they will feel threatened if they find themselves losing. Researchers have found that men and women who score high on the trait of hypercompetitiveness are more narcissistic and less psychologically healthy than those who score low on the trait. Hypercompetitive individuals generally believe that "winning isn't everything; it's the only thing".