I may be showing my age here, but I use the Star Trek analogy of Mr. Spock…Rational Mind is devoid of emotion and is logical, rational, and can sometimes be seen as cold or uncaring, although that is not necessarily what is going on in that situation.
Rational Mind is ‘Doing Mode;’ engaging our problem-solving skills. It’s what weighs the costs and benefits of a given action or solution to a problem.
Does this help?