Learn to Affect Customer Behavior Using the Theory of Planned Behavior

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How can you change the behavior of your customers?   Try the Theory of Planned Behavior.

The Theory of Planned Behavior (TPB) is an established behavioral psychological theory that links beliefs and behavior. It was developed by Icek Ajzen in 1985 and since been applied to studies of the relations among beliefs, attitudes, behavioral intentions, and behaviors in various aspects of business, such as marketing, public relations, and advertising campaigns; and across numerous industries.  TPB has also improved the predictability of intention in various health-related fields, such as condom use, leisure, exercise, diet, etc.

TPB provides a model for understanding how we can change the behavior of people–such as our target customers, our business partners, our management team, our employees, key stakeholders, etc. It is a theory which predicts deliberate behavior, because behavior can be planned.

According to TPB, human behavior is guided by 3 kinds of considerations:

• Behavioral Beliefs. These are beliefs about the likely consequence of the behavior.

• Normative Beliefs. These are beliefs about the normative expectations of others.

• Control Beliefs. These are beliefs about the presence of factors that may facilitate, or may impede, the performance of the behavior.

In their respective aggregates, “behavioral beliefs” produce a favorable or unfavorable “attitude toward the behavior;” “normative beliefs” result in “subjective norm;” and “control beliefs” gives rise to “perceived behavioral control.”   Attitude toward behavior, subjective norm, and perceived behavioral control together shape an individual’s intentions and behaviors.  The diagram below provides a visualization of TBP and all its components.

What is Intention?

Intentional is an indication of an individual’s readiness to perform a given behavior. It is assumed to be an immediate antecedent of behavior.

Intention is based on attitude toward the behavior, subjective norm, and perceived behavioral control, with each predictor weighted for its importance in relation to the behavior and population of interest.

What is Behavior?

Behavior is an individual’s observable response in a given situation with respect to a given target. Ajzen said a behavior is a function of compatible intentions and perceptions of behavioral control in that perceived behavioral control is expected to moderate the effect of intention on behavior, such that a favorable intention produces the behavior only when perceived behavioral control is strong.

In general, the more favorable the attitude toward behavior and subjective norm and the greater the perceived behavioral control, the stronger the person’s intention to perform the behavior in question should be.  Therefore, given a sufficient degree of actual control over the behavior, people are expected to carry out their intentions when the opportunity arises.

It is important to be aware that TPB does have some limitations, such as:

• Factors such as demographics and personality aren’t in this framework

• There is no clear definition of perceived behavioral control (hard to measure).

• The more time between behavioral intent and actually doing the behavior, the less likely the behavior will happen.

• The theory assumes that perceived behavioral control predicts actual behavioral control.

• The theory also assumes people are rational and make systematic decisions based on available information—and ignores unconscious motives.

So, how do you plan to leverage the Theory of Planned Behavior in your work?

You can download an editable PowerPoint about the Theory of Planned Behavior here on the Flevy documents marketplace.

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