What is Mindset?
The science of mindsets in general starts in the brain. Reactions to failing or success and the praise of it can trigger certain mindsets. Types of mindsets are growth and fixed mindsets. A growth mindset will allow - you guessed it - growth in the activity. A fixed mindset does not allow this. It is the opposite. Check out the Growth Mindset and Fixed Mindset sections for more information.
Here is a Carol Dweck TED talk about mindsets.