Answer:
The idea that <em>different people need different training methods</em> is derived from the premise that they have <em>different learning styles</em>.
While the wide range of often competing theories regarding learning styles exist, one of the popular once, is the theory of <u>Learning modalities</u> developed by Walter Burke Barbe. It suggests that there three learning modalities: visual, kinesthetic/tactile and auditory. For example, <em>I consider myself an auditory learner</em>. I perceive, understand and retain information most effectively by auditory means: listening to lectures, audiobooks, discussions.
The other popular theory of learning styles is <u>Kolb's experiential learning model</u>, which suggests that there are Accommodating, Converging, Diverging and Assimilating learning styles. It is based on the premise that there are two ways of grasping experience - through Reflective Observation and Active Experimentation.
Many of the learning styles theories and models receive criticism, which has to be taken into account.