Universities are one of the most important and constructive social institutions which must help promote creativity, empowerment and comprehensive development in any society. Universities are the source of acquisition and application of up-to-date world knowledge in various fields (
1). As specialized institutions, universities cover courses in various areas such as research, education, consultations, evaluation and supervision. Comprehensive growth and promotion of universities require a strategic orientation and adoption of policies based on growth and development consistent with current environmental changes (
2).
One of the most fundamental components of medical education system is curriculum which includes learning opportunities and experiences as the most obvious aspect of the mission and the most practical policy of educational system for management of students’ learning (
3). Curricula are designed and implemented under the supervision and responsibility of the educational system in order to create positive changes in knowledge, skills and attitudes of students and to evaluate their performance. Such curricula must be designed to create a dynamic learning environment, facilitate growth of students, and form their true identity. Therefore, realization of human dignity and actualization of students’ potential occurs through education, textbooks, proper teaching and learning conditions and presence of individuals capable of and specialized in implementing the curricula (
4).
On the other hand, little comprehensive research has been conducted on medical education environment and its aspects and elements (
5) while most studies have focused on a particular aspect of this issue. Accordingly, one of the particular areas in regard to medical education and curricula is spiritual health. In addition to professional training of individuals, medical education as a social institution is required to facilitate spiritual growth as an element influencing other aspects of life including moral obligations, self-esteem and commitment. Studies suggest that spirituality is one of the most important components of students’ lives during their course of studies (
6). In fact, spirituality and spiritual growth have a positive impact on the quality of life, individual growth, better understanding of personal and professional goals and meaning of life (
7).
Spiritual health is the newest aspect of health besides physical, mental and social health (
8). Spiritual health is very difficult to define. Undoubtedly, the comprehensive definition of spiritual health is not limited to the effect of prayers and spiritual states in curing diseases and using them instead of conventional medical treatments or complementary medicine (
9). Spiritual health can be defined as having a sense of acceptance, positive emotions, ethics and a sense of positive interaction with a dominant divine power, others and oneself, achieved through a dynamic and harmonious personal cognitive, emotional, functional and consequential process (
10). Mozafarinia et al. (
11) believe that spiritual health consists of three aspects of cognition, emotion and interaction. The cognitive aspect refers to having a special understanding of God, human and creation, and acceptance of God and divine law as the first step towards God. Knowing oneself is the most important step towards obtaining a knowledge of God. The next step is emotions, sense of peace, joy, hope and love of God and divine prophets. One of the most important indicators of spiritual health and states of a spiritual individual is positive emotions (love of God and divine prophets and spiritual experiences). The aspect of interaction refers to the way an individual expresses their inner spiritual beliefs in the outside world.
Self-esteem is considered part of personality health of individuals because self-affirmation and self-acceptance and a sense of self-worth are characteristics of a healthy and normal personality (
12). In other words, self-esteem refers to how individuals think of themselves, how much they love themselves and how they are satisfied with their own performance, especially their feeling about their social and educational performance (
13) as well as the harmony and proximity between their ideal and actual self-image. In other words, self-esteem refers to the degree of approval of individuals’ self-worth or their judgment about their own worth (
14). As a matter of fact, it is the basic human need for a stable and consistent self-evaluation. It is one of the concepts researchers and thinkers have focused on over the last decades. According to Harter’s (
15) hierarchical model, self-esteem is influenced by three major areas: educational, physical and social areas. Development and actualization of students’ self-esteem in these three aspects depends on creating the necessary conditions.
Accordingly, medical education must pay more attention to students’ spiritual growth in its curricular and extracurricular programs, bridge the gap between students’ scientific and spiritual progress (
16), and facilitate the development of their self-esteem. Therefore, it is important to identify the factors affecting students’ self-esteem in medical education environments and adopt appropriate measures to implement medical education curricula so that by offering proper strategies, steps may be taken in order to solve the problems in this area.
Many researchers have studied the main variables of the research but no research was found that examined all three variables in students in a single study. Furthermore, the present research adopts a comprehensive approach to study the effect of the mediating variable of spiritual health in the university environment on students’ self-esteem, an issue which has not been considered in previous studies. Previous studies have merely emphasized one of these aspects. For example, Cox (
17), Fukofuka (
18), Hodge (
19), and Williams et al. (
20) found that spirituality has a positive effect on students’ academic achievement as well as their ability to overcome problems and stress and build self-esteem. Asplund (
21) showed that faith and spirituality have a significant role in students’ decision to stay in university. Forward et al. (
22) found a significant relationship between students’ spiritual beliefs and organizational support of universities and students’ commitment. A study by Constantine et al. (
23) also confirms that spirituality in students acts as a coping mechanism against educational and professional problems. Bigham (
24) found that universities can help students to make a career choice in accordance with their values and beliefs and have a successful performance in their careers by offering programs in the field of spiritual growth. Duffy (
25) concluded that religion and spirituality have a significant effect on observing occupational values among university graduates. Duffy and Lent (
26) showed that those with a higher level of spirituality acted more maturely in making professional decisions. Considering the above issues, it could be stated that spirituality can affect all aspects of an individual’s life and be associated with scientific and professional values (
6,
16).
In this sense, researchers have explained various factors that play a role in the quality of university environment in different educational and research aspects from different perspectives. Achieving these factors facilitates improvement of universities in various areas. Universities are then compelled to design and implement effective educational courses for students and reflect their findings about effective curricula.
Therefore, curricula play a significant role in the educational-research environment of university, students’ spiritual health and its consequent effect on students’ self-esteem. The present paper examined the relationship between educational-research environment of university, spiritual health and students’ self-esteem in higher education curricula in the form of a causal model and a case study. Thus, the research questions include: does the educational-research environment of university significantly predict students’ self-esteem?, does the educational-research environment of university significantly predict students’ spiritual health?, does spiritual health, by controlling the educational-research environment of university, significantly predict students’ self-esteem?, and does spiritual health play a mediating role in the relationship between the educational-research environment of university and students’ self-esteem (
Figure 1)?
The conceptual model of the research