The concept of social intelligence competencies in a cross-cultural context is crucial for effective communication, collaboration and leadership. This summary reviews various studies that highlight the importance of considering cultural differences when developing these competencies. Hofstede's doctrine on culture and value orientations is discussed, as well as the impact of doing and mastery orientations on relationships among justice, commitment, and trust. Cross-cultural competence assessment tools are also reviewed. The significance of cross-cultural training in expatriate adjustment and its relationship with cultural intelligence and self-efficacy is explored. The papers examined demonstrate that understanding social intelligence competencies requires consideration of cultural nuances, and that building trust on cross-cultural teams is essential for success.