Concept mapping can affect self-efficacy in several ways.
It can help learners to identify and clarify their prior knowledge and to integrate it with new information. This can increase their confidence and reduce their anxiety about learning.
It can help learners to set realistic and specific goals and to monitor their progress and achievements thereby foster their sense of control and autonomy over their learning.
It can also help learners to reflect on their strengths and weaknesses and to seek feedback and support from others.