The Power of Influence - Colour Traits and Preferences

I've recently written an article on LinkedIn highlighting the need for recognition of people's personality traits and characteristics, in order that you can learn how to appeal to them. If Myers Briggs Type Indicators (MBTI) or Hartman principles are used to identify, support and develop leadership skills, team composition and conflict resolution amongst others. Is it not critical that procurement professionals need the generic principles on how types of individuals think, react and like to receive information. https://www.linkedin.com/pulse/power-influence-colour-traits-preferences-steven-mills?trk=pulse_spock-articles What are your experiences? Do we utilise these soft skills enough within our interactions? Can we benefit from the greater training in Emotional intelligence such as that offered by JCA Global and CIPS?