By relivingmbadays on September 9, 2012
MARS Model seeks to explain individual behavior as a result of internal and external factors or influences acting together. The acronym MARS stands for motivation, ability, role perceptions and situational factors. All the above four factors are critical and influence the individual behavior and performance, if any one of them is low in a given situation the employee will perform poorly. These are seen as the four major factors in determining individual behavior and results.
Motivation represents the forces within a person that affects his or her direction, intensity and persistence of voluntary behavior. Direction refers to the path along which people engage their effort. People have choices about where they put their effort; they have a sense of what they are trying to achieve and at what level of quality, quantity, and so forth. In other words, motivation is goal-directed, not random.
People are motivated to arrive at work on time, finish a project a few hours early, or aim for many other targets. The second element of motivation, called intensity, is the amount of effort allocated to the goal. Intensity is all about how much people push themselves to complete a task. For example, two employees might be motivated to finish their project a few hours early (direction), but only one of them puts forth enough effort (intensity) to achieve this goal.
Finally, motivation involves varying levels of persistence that is, continuing the effort for a certain amount of time. Employees sustain their effort until they reach their goal or give up beforehand. Remember that motivation exists within individuals; it is not their actual behavior. Thus, direction, intensity, and persistence are cognitive (thoughts) and emotional conditions that directly cause us to move.
Employee abilities also make a difference in behavior and task performance. Ability includes both the
References: McShane−Von Glinow, Organizational Behavior.