<prompt> Ability to form a concept and generalize is known as:Concrete thinkingAbstract thinkingIntellectual thinkingDelusional Thinking  <response>: Abstract thinking is the ability to make concepts i.e. ability to grasp essential of whole and to generalize. Concrete thinking - Literal thinking does not have deep thinking Intellectual thinking- Use of excess intellect and scientific knowledge in thinking process. Delusional thinking- False , hypothetical ,firm thoughts contrary to reality. 