This article is a extension to our 'In a Nutshell' series. Click on the following link to view our original article on 40 Must-Know HR, OD, L&D Models.

Abraham Maslow (1908-1970) was an American professor of psychology who played a major role in laying the theoretical foundations of the "humanistic psychology" movement that emerged in mid-20th century.

Google, the company ranked no. 1 on Fortune’s list of best places to work for the past 6 years, has decided to share its HR knowledge with the world.

The term "Johari Window" is derived from the first names of its creators: Joseph Luft and Harry Ingham. The model was first developed in 1955 and published in the Proceedings of the Western Training Laboratory in Group Development later that year.

This article is an extension to our "In a Nutshell" series. To read our original overview of the SMART goal-setting model click here.

The time management matrix appears in a variety of different forms, with different words used to describe the type of activities associated with each quadrant; however, the basic concept is thought to have first originated with US President Dwight D. Eisenhower, who said, “What is important is seldom urgent and what is urgent is seldom important.”

The SWOT framework was developed by American management consultant Albert S. Humphrey and his colleagues while working at the Stanford Research Institute (now SRI International) during the 60s and 70s.

This article is an extension to our "In a Nutshell" series. To read our original overview of Simon Sinek's Golden Circle model click here.