's theory
Hummel's theory proposes that intelligence is composed of multiple functions and abilities which can be measured to predict success in educational, social, and professional settings. Specifically, he identified twelve abilities, including inductive and deductive reasoning, abstract thinking and understanding, word fluency, analogical knowledge, and numerical calculation. Hummel's 1.5352.1201.50 is a numerical calculation ability which evaluates an individual's capacity to mentally process information and solve mathematical problems with speed and accuracy. It assesses the individual's ability to carry out calculations and estimates, solve basic arithmetic problems, and reason quantitatively to solve more complex problems involving calculations.