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Persuasive interface is an ensure that the product will be used

While the first three hierarchy levels are aimed at making it possible for the user to work with the system, this last level is needed to motivate users to work with it. 

Motivation techniques persuade users to behave in a certain way. Psychology and HCI accumulated a lot of knowledge about how users react to different stimuli. This knowledge can be profitably used in interactive systems development. 

Persuasive techniques can be used to:

  • increase the number of permanent users of the system
  • increase the popularity of certain system functions (e.g. paid services)
  • change users' behaviour (make them more friendly, loyal, productive) 

Psychologic rules, that are the basis of human emotions and influence human behaviour and aims, have been studied for more than a century. Practitioners started to implement this knowledge in applied sciences, including HCI sphere. New laws and principles have been worked out, as well as ethic norms, which are aimed at preventing the misuse of these new powerful techniques.  

Methods we use to create persuasive systems

  1. Task analyses
  2. Prototyping
  3. Expert evaluation
  4. Interface testing with real users
  5. United work on design

Persuasion is the last level of our hierarchy