Let's look at an example of how a learner's mastery strength might change over time. Remember that every time a learner completes an Activity their mastery strength may change.The amount and direction of change is based on many factors, including:If the learner completed the Activity proficiently The learner's self-assessed confidence levelIf sufficient time has elapsed since the learner last increased their mastery strength in that ConceptProTip: When a learner's mastery strength changes, the change will be reflected at that content level (Concept, Topic, Module, Mastery Profile) and all of the levels above it. ExampleBeth is assigned a Concept on Crucial Conversations. This Concept has a mastery goal (target mastery strength) of Level 3: Competent. She starts at mastery level 0 for the Concept.During her first Training Session, Beth is presented an Activity from the Concept. She answers proficiently with high confidence.Beth moves up to mastery level 1 for the Concept.The next day, Beth is presented another Activity from that Concept. Again, she answers proficiently with high confidence.She moves up to mastery level 2 for the Concept.A week later, Beth is presented an Activity from the same Concept. She does not answer proficiently, but correctly self-assessed and chose low confidence.Because Beth selected low confidence, she drops one level to mastery level 1 for the Concept.ProTip: Because learners tend to forget over time, OttoLearn presents information gradually, using spaced repetition.Over the next three weeks, Beth is presented several Activities from the Concept (each on a different day). She answers each of these Activities proficiently with high confidence.By the end of the three weeks she has moved up to mastery level 4 for the Concept and reaches her target mastery strength. A few days later, she is presented with another Activity from the Concept. Beth answers proficiently but with low confidence.Because Beth is above her target mastery strength for the Concept (level 3) and selected low confidence, she drops one level to mastery level 3 for the Concept.The next day she is presented the same Activity from the Concept. This time she is over-confident and answers incorrectly with high confidence.Because Beth selected high confidence, she drops to mastery level 0 for the Concept (she will also lose her learning progress for that Concept). Since this is just one of many Concepts in her training, Beth's overall mastery strength won't drop dramatically.During her next Training Session, Beth is presented an Activity from the Concept. She answers proficiently with high confidence.Beth moves up to mastery level 1 for the Concept.