Final answer:
To develop a global mindset, managers need cultural sensitivity, adaptability, and openness to diverse perspectives, but not ethnocentrism, as it hinders cross-cultural understanding.
Step-by-step explanation:
Developing a global mindset requires managers to possess certain traits that help them operate effectively in a diverse and international environment. These traits include cultural sensitivity, which reflects an understanding and respect for cultural differences; adaptability, the ability to adjust one's approach in different cultural contexts; and openness to diverse perspectives, being receptive to various viewpoints and ways of thinking. However, ethnocentrism, which is the belief that one's own culture is superior to others, is the trait that is not required. In fact, ethnocentrism is counterproductive to developing a global mindset as it hinders cross-cultural understanding and collaboration.