Research competence, professional knowledge and communication competence were recognized as the most important competences of pharmaceutical mentors. Academic research is an important part of postgraduate training. The Accreditation Council of Pharmacy Education Guidelines (Guidelines 23.4) state, ‘colleges and schools should implement strategies and programs to broaden the professional horizons of students in areas such as scientific inquiry, scholarly concern for the profession, and the relevance and value of research’ [22]. Therefore, research competence is considered the core competence of health science teachers [16], and the quantity and quality of science papers published and national research topics are important evaluation indices for induction and on-the-job evaluations of mentors in Chinese universities, such as Tsinghua University and Peking University [28]. Mentors should strengthen their comprehensive abilities, especially their research ability, to carry out postgraduate education [29]. Meanwhile, research competence could stimulate the self-education and professional development of teachers and their ability to comprehend new ideas to be implemented for educational purposes [30]. In the study, mentors’ research competence was significantly positively correlated with educational competence (r = 0.622, p < 0.05). Like Burke-Smalley et al. [31] argued that the ability to successfully integrate research and teaching is the essence of a university professor.
Teachers’ subject matter knowledge and pedagogical content knowledge have been argued to be essential for achieving educational quality [32, 33]. The transmission of knowledge and information from the mentor to the mentee is an integral part of mentoring [5]. Pharmaceutics is a highly professional discipline based on chemistry, biology, and medicine that has a very complex knowledge system [34]. The study indicated professional knowledge was positively related with research competence, educational competence, supportive competence, communication competence and academic achievement. Among them, the correlation with research competence was the highest (r = 0.659, p < 0.01). According to the componential theory of creativity, professional knowledge is an indispensable component of creativity [35, 36], which is the basis for mentors’ scientific research. Therefore, mentors should continue to acquire professional knowledge, such as pharmaceutics, clinical medicine, biology, chemistry, new experimental technology, and database search methods, to provide better guidance.
Teacher communication skills are necessary for improving student learning. Mainhard et al. [37] reported that teachers can be most effective when they convey relatively high levels of interpersonal agency and communion in class. Aspfors and Fransson [8] reported that trusting, comfortable, supportive and stimulating relations among participants in mentor education are crucial for professional learning. Bargar and Duncan [38] advised academic supervisors of postgraduates to follow several principles to promote students’ creative dissertation work, including building a friendly and equal relationship between teachers and students, thereby facilitating good communication. Furthermore, we found that mentors’ research competence and communication competence were highly correlated (r = 0.734, p < 0.01), and communication competence explained 53.8% of the total variance in research competence. Communication led to higher levels of team cooperation [39] and more support and resources [40, 41], which play important roles in research ability. Therefore, we should strengthen mentors’ communication skills training through lab meetings, teaching discussions, speech contests and language expression training courses to improve mentors’ professional development and students’ learning.
The perceptions of postgraduates and mentors with regard to mentors’ competence differed. Mentors thought educational competence was more important to mentors’ competence development and were not concerned about educational competence to the same degree as postgraduates. Mentors’ educational competence determines the quality of classroom teaching and their effectiveness in guiding students. The core content of this competence is to foster effective teaching behavior, such as creating a safe and stimulating learning climate, employing efficient classroom management strategies, providing clear instruction, activating learning, and adapting teaching and teaching-learning strategies [42–44]. Mentors want opportunities to participate in professional development programs to improve their teaching ability and become better prepared for mentoring. However, postgraduates may lack a comprehensive understanding of mentors’ competence and may think that increasing mentors’ educational competence does not help postgraduates’ personal growth, especially with regard to earning a graduate degree. The findings suggest that postgraduates placed more importance on supportive competence than did mentors and that mentors cared more about postgraduates’ academic performance than their personal growth. The postgraduates wanted mentors to provide greater assistance in terms of their career path and development opportunities, which are insufficient in the existing professional relationship. The results validate previous studies indicating that mentors should play a proactive role in supporting postgraduates and helping them to achieve both academic goals and personal and professional aspirations [6]. Successful mentorship includes not only addressing curricular issues but also providing career opportunities for students [8].
Teachers’ characteristics are highly correlated with students’ academic achievement [45]. However, no evidence supports that a postgraduate academic or professional credential raises the quality of teaching [46]. Teachers rely on their postgraduate education to promote their personal development and professional career and to build their academic credentials [47]. The mentors accepted in postgraduate education had undergone long-term, formal professional training, could adequately apply innovations to the classroom environment, recognized different points of view on the education system, discuss education applications with colleagues, and exhibited self-confidence in the workplace [47]. At the same time, postgraduate education enabled mentors to become experts in their subject, and they were more likely to be academically successful and popular with students. In contrast, mentors with bachelor’s degrees improved their personal abilities through self-learning. A lack of professional guidance makes mentors’ development more difficult. These mentors were eager to improve their educational competence, supportive competence and academic achievement in order to build good relationships with their students. The literature regarding the relationship between students’ perceptions of good teaching and good instructors and their background characteristics is not extensive. Regarding sex, Anderson and Ingram [48], in their study among doctoral students, found that compared to men, women were more likely to endorse the traits of professional, expert and student-centered as characteristics of good instructors. Lavin et al. [49]; Korte et al. [50] found that female students tended to assign a higher rank to traits related to effective teaching than male students. Our study is consistent with results reported in previous studies. Sex differences were found regarding mentors’ research competence, educational competence and communication competence, whereby female students assigned greater importance to all of these dimensions than did male students. However, no concrete explanation was given for this result. More research is needed to understand the reasons for these differences.