Glossary
Trigger
What are triggers in the Fogg Behavior Model?
A behavioral trigger is a cue to perform a behavior. Fogg changed his term to “prompt” in late 2017. In his model, a prompt comes together with sufficient motivation and ability for behavior to occur.
A prompt can come from a routine as well as an external message. In behavioral design, the useful question is what action it points to and whether the person is able and willing to do it then.
The three types of behavioral triggers in Fogg’s model
Spark
A spark is intended to add motivation when ability is sufficient. A message describing an appealing reason to act could serve this purpose.
Facilitator
A facilitator is intended to make action easier when motivation is sufficient but ability is limited. Guidance that helps someone complete the next step could be an example.
Signal
A signal is a reminder when motivation and ability are already sufficient. An alarm is a familiar example of a cue.
Why it matters
Check whether the prompt points to a feasible, worthwhile action and whether it helps in practice.