Answer: Positive Psychology
Explanation:
Positive psychology is defined as field of psychology that helps people and groups to indulge in positive aspect of life. It provides strength, belief and good life for fulfilling human life and environment. Enhancement of life worth and qualities of person takes place in this field.
According to the question, article read by Talia is based on positive psychology because courage and calmness factors helps firefighters to face stressful situation. Thus, qualities are improved for better living conditions.