Thursday, 25 February 2016

Cialdini's six principles of persuasion, part 1

The way product description (text and image) are presented to a customer on an e-commerce site goes a long way in determining if that client will make a purchase or not. The use of certain words/phrases and strategies have been shown to influence users more than others. Cialdini's  principles [1, 2] are strategies that have been shown to result in a change of users' attitude and behavior.

According to Cialdini, persuasion is governed by principles that can be taught, learned and applied. If these principles are applied effectively, they can lead to higher positive response to persuasion. He came up with 6 principles that influence change in people. These principles are: authority, social proof, scarcity, consistency and commitment, liking, reciprocity. In this write up, I described the first 3.

1) Authority
People tend to be more receptive of people in authority. Recommendations or reviews made by people in authority are more likely to be believed.

According to Cialdini, there are several authority symbols. Title is a common one. Because it takes years of work and achievement to earn a title, people tend to respect and believe people with certain titles like Professor. Cialini buttressed this point in his book, Influence, science and practice, where he described a friend of his who is a professor at a well known eastern university. Because this friend  travels a lot, he finds himself chatting with strangers at bars, airports and restaurants. He usually has interesting conversation with them until they find out he is a professor and these strangers become respectful and accepting. Another authority symbol is clothes. Clothes like police uniform, religious attire and hospital whites can trigger compliance in people. Personally, I'm more inclined to obey/believe a priest in white collar than say a regular guy in jeans and t-shirt.

One way authority can be implemented in e-commerce is in the description of products. Including book reviews from authority figures could persuade people to buy such a book. An example of this is in Amazon is the use of text like "New York Times bestselling author" to describe authors. People that see New York Times as a symbol of authority could be persuaded to buy such a book. An example of this is shown below.






2) Social proof (Consensus)
This principle states that "we determine what is correct by finding out what other people think is correct". In other words, people follow the lead of similar others. According to Ciadini, "people rely heavily on the people around them for cues on how to think, feel and act". Going by this principle, one is more inclined to do something if others are doing the same thing.

In Amazon, persuasion through social proof is evident in their use of the feature "Customers who bought this item also bought". A customer who bought item A could be persuaded to buy items B and C because other customers who bought item A also bought items B and C. A screen shot from Amazon.ca is below.



3) Scarcity
This principle states that "opportunities seem more valuable to us when they are less available". People are more motivated by the thought of losing something they already have than by gaining something new of the same value. One way of implementing scarcity is by using the limited number tactic. Telling a customer that an item is available in limited number could persuade that customer to buy the product. Another way of implementing scarcity according to Cialdini is by using time limits like deadlines.Creating and publicizing deadlines for product sales could generate interest that may not have existed before.

For items in short supply, Amazon displays the number of items in stock.





While these appear to be valid persuasion tactics, it will be interesting to see how effective real customers think they are. Carrying out a user study where users rate these strategies seems like a valid research direction. 

[Please note that this article was not peer-reviewed and forms my personal opinion. The comments however are not mine and do not describe my opinion.

References 

[1] Cialdini, R. B. (2009). Influence: Science and practice (Vol. 4). Boston: Pearson Education.

[2] Cialdini, Robert B. "Harnessing the science of persuasion." Harvard Business Review 79.9 (2001): 72-81.

Wednesday, 24 February 2016

Persuasion and Persuasive Technology

Traditionally, persuasion is defined as "Human communication designed to influence the autonomous judgements and actions of others" [1]. The online Oxford dictionary defines persuasion as "Causing (someone) to do something through reasoning or argument" [2]. What these definitions have in common is changing the behavior or attitude of others. 

Persuasive technology, simply put, is the use of technology in persuasion. B.J. Fogg (I always refer to him as the father of persuasion) defines persuasive technology as "the use of interactive computing systems to change people's attitudes and behaviors" [3]. Oinas-Kukkonen defines persuasive technology as "computerized software or information systems designed to reinforce, change or shape attitudes or behaviors or both without using coercion or deception"[4]. Persuasive technology, to me, is the use of technology to change the attitude and behavior of others without coercion or deception.

Persuasive technology (PT) is used in every domain I can think of. In e-commerce, companies like Amazon persuade customers by making suggestions about other products, using text like "Customers who bought this item also bought". Facebook persuades you to "friend" other users by telling you how many friends you have in common with them. Q&A social networks like Stack Overflow [5] persuade people to participate by rewarding top participants with high reputation scores and privileges. If you take a minute to think about it, almost everything these days involve some form of persuasive technology. In health, there are several apps that persuade people to live healthy life styles. The list goes on. 

There are currently various frameworks and strategies for designing persuasive systems. A review carried out by Waife and Nakata [6] shows that the frequently applied frameworks include B.J. Fogg's functional triad [3], and the trans-theoretical model - TTM [7]. TTM is a health specific framework. B.J.Fogg's functional triad had been studied extensively over the years and and new frameworks have been developed based on his model. One of such models is the Persuasive System's Design model of Oinas-Kukkonen and Harjumaa [4]. Cialdini's 6 principles of persuasion [8] is another model that I have studied recently. These frameworks include constructs like scarcity, praise, rewards, that if implemented in a system, could lead to increased persuasiveness of that system and ultimately a positive change of the system's users behavior and attitude.

It should be noted that persuasive technology excludes the use of coercion and deception. There is train of thought that considers persuasion to be the same as deception or coercion. I agree that there is a thin line between persuasion and coercion, but a line does exist, hence they are not the same thing.

Over the next weeks, I will review one or two frameworks described above and I will give examples of their application in a typical e-commerce platform.

[Please note that this article was not peer-reviewed and forms my personal opinion. The comments however are not mine and do not describe my opinion.]

References

[1] Simons, H.W. Morreale, J. Gronbeck, B.: Persuasion in society. Sage publications, Inc., Thousand Oaks (2001)
[2] http://www.oxforddictionaries.com/us/definition/american_english/persuade#persuade__2
[3] B.J. Fogg, "Persuasive technology: using computers to change what we think and do". Morgan Kauffman, 2003.
[4] H. Oinas-Kukkonen and M. Harjumaa, "A systematic framework for designing and evaluating persuasive systems," in Persuasive Technology, Springer, 2008, pp. 164-176.
[5] http://stackoverflow.com/
[6] I. Wiafe and K. Nakata, "Bibliographic analysis of persuasive systems: techniques, methods and domains of application," Persuasive Technology, vol. 61, 2012.
[7] J. O. Prochaska and W. F. Velicer, "The transtheoretical model of health behavior change," American Journal of Health Promotion, vol. 12, pp. 38-48, 1997.
[8] Cialdini, R. B. (2009). Influence: Science and practice (Vol. 4). Boston: Pearson Education.

Sunday, 14 February 2016

Happy St. Valentine's Day From me To You!

Here is wishing you all a happy valentine's day. Hope you and yours have a fun day!


 Image source: http://www.quotesgiant.com/valentines-day-google-doodles2016/