أ. شريف نايف عوايص

محاضر في ادارة الأعمال- رئيس قسم التسجيل - عمادة القبول والتسجيل

Expc-Theory

Expectancy Theory - Theories of Motivation: Vroom’s Valence

Vroom offered an expectancy approach to the understanding of motivation. According to him, a person’s motivation towards an action at any time would be determined by an individual’s perception that a certain type of action would lead to a specific outcome and his personal preference for this outcome.

There are three variables of Vroom’s model given in the form of an equation. Since the mode is multiplicative, all the three variables must have high positive values to imply motivated performance choices. If any of the variables approaches zero, the probability of motivated performance approaches zero.

Motivation = Valence*Expectancy*instrumentality

Valence is the strength of an individual’s preference for a reward, expectancy is the probability that particular action will lead to a desired reward and instrumentality denotes an individual’s estimate that performance will result in achieving the reward. Thus, if an individual has a particular goal, some behaviour must be produced in order to achieve that goal. He will weigh the likelihood that various behaviors will achieve the desired goals and if certain behaviour is expected to be more successful than others, that particular behaviour will be preferred by the individual.

(a) Valence (reward preference): it refers to the strength of an individual’s preference for receiving a reward. It is an expression of the value he places on a goal (outcome or reward). The value attached to a goal or reward is subjective as it varies from person to person. For instance, if a young and dynamic employee wants a promotion, has high valence or strength for that employee. Similarly, a retiring employee may have high valence for reemployment.

People have different valence for various outcomes. The relative valence they attach to various outcomes is influenced by conditions such as age, education and type of work. The valence of a person for a goal may be positive or negative depending upon his positive or negative preference for this goal. If a person is indifferent to an outcome, his valence is zero. Thus, the total range of valence is from –1 to +1.

(b) Expectancy (Effort-Reward Probability): it refers to the extent, to which the person believes that his efforts will lead to the first level outcome, i.e., completion of a task. Expectancy is stated as a probability, i.e., as individual’s estimate of the probability of an outcome from an action. Since, it is an association between effort and performance, its value may range from 0 to 1. if the individual feels that chances of achieving an outcome are zero, he will not even try. On the other hand, if expectancy is higher, the individual will put higher efforts to achieve the desired outcome.

(c) Instrumentality (performance-Reward Probability): it refers to the probability to which the performance (first level outcome) will lead to the desired reward (second level outcome). For instance, an individual wants a promotion and feels that superior performance is very important in achieving promotion. Superior performance is the first level outcome and promotion is the second level outcome. The first-level outcome of high performance acquires a positive valency by virtue of its expected relationship to the preferred second level outcome of promotion. In other words, superior performance (first-level outcome) will be instrumental in obtaining promotion (second level outcome). The value of instrumentality also ranges from 0 to 1, as it is the probability of achieving the desired outcome.

 

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