Answer :
Answer:
self-fulfilling prophecy
Explanation:
Based on the information provided within the question it can be said that in this scenario a self-fulfilling prophecy has occurred. This term refers to when an individual causes a prediction to come true by unintentionally adjusting their behavior and action in such a way that makes that prediction come true. Which is what is happening in this scenario since Leone thinks that Josef is good at investing, it makes Joesef read up and become good at investing.