Linear-Active Culture tend to be task oriented, highly organized planners who complete action-chains by doing one thing at a time, preferably in accordance with a linear agenda.
Multi-Active Culture are loquacious, impulsive, like to do many things at a same time and attach great importance to feelings, relationships and people-orientation.
Reactive Cultures rarely initiate action or discussion, preferring first to listen to and establish the other's position, then react to it and formulate their own. Reactive cultures listen before they leap.
As per Richard Lewis's Cultural Catagories - linear-active, multi-active and reactive - classifies the culture of a leader defined by the culture he/she lived as a child.