The answer is neutral stimulus; conditioned stimulus. A neutral
stimulus is a spur which originally makes no exact answer
except concentrating responsiveness. In classical conditioning,
when put together with an unconditioned stimulus, the neutral
stimulus turn out to be a conditioned stimulus.
This is true, The Psalms took less 500 years to be written.
I think the most important characteristic of a president is their education. The president has to be smart to be able to lead our country well, and know what to do in the state of a crisis. However, they also need to be reasonable, generous, and kind to others. These characteristics will make him treat every American fairly and with respect no matter their background, economic situation, race, religion, etc. and be able to make decisions for America by thinking of how it will affect every American. Therefore, another important characteristic would be the ability to treat citizens fairly.