Simply put, Decision making is defined as the process involved in making a decision. It involves comparing alternatives and finding a solution to a problem.
The four styles of decision making are directive, analytical, conceptual and behavioral. Each style is a different method of weighing alternatives and examining solutions.
Kyle prefers to base decisions on lots of data, both objective data from information systems and qualitative data from people - Analytical decision style
Bill prefers simple, clear-cut solutions to problems. - Directive decision style.
Josie likes to talk to people one on one to find out how the decision will affect them - Behavioural decision style.