How to Apply Feedback to Improve Subjective Wellbeing of Government Servants Engaged in Environmental Protection in China?

Background In order to improve subjective wellbeing of government servants engaged in environmental protection who work in high power distance in China, it is important to understand the impact mechanism of feedback. This study aims to analyze how feedback environment influences subjective wellbeing through basic psychological needs satisfaction and analyzing the moderating role of power distance. Method The study was designed as a cross-sectional study of 492 government servants engaged in environment protection in Shandong, China. Government servants who agreed to participate answered self-report questionnaires concerning demographic conditions, supervisor feedback environment, basic psychological need satisfaction, and power distance as well as subjective wellbeing. Results Employees in higher levels of supervisor feedback environment were more likely to experience subjective wellbeing. Full mediating effects were found for basic psychological needs satisfaction. Specifically, supervisor feedback environment firstly led to increased basic psychological needs satisfaction, which in turn resulted in increased subjective wellbeing. Additional analysis showed that the mediating effect of basic psychological needs satisfaction was stronger for employees who work in high power distance than in low power distance. Conclusion The results from the study indicate that supervisor feedback environment plays a vital role in improving subjective wellbeing of government servants engaged in environmental protection through basic psychological needs satisfaction, especially in high power distance.


Introduction
Subjective wellbeing refers to how people experience the quality of their life [1] and is a public health concern associated with sociodemographic characteristics, health risks, stress, poor health, separation, unemployment, and lack of social contact consequences for the employee, as well as for the organization [2][3][4]. For the individual, subjective wellbeing has been found to lead to job burnout and turnover intention [5,6]. Previous researchers have demonstrated the link between wellbeing and job outcomes such as commitment [7]. In recent years, the haze weather occurs frequently in China, and the whole society has paid close attention to the air quality problem. The pressure of environment protection makes environmental protection civil servants often have to work overtime, leading to work-family conflict increase. Inequality between rights and responsibilities results in the increase of helplessness, thus leading to a decline in subjective wellbeing. To facilitate environmental protection government servants' subjective wellbeing is therefore of importance.
The effects of environment variables can be felt in short period, but the demographic and personal characteristics are not likely to get intervention [8,9]. Thus the environment factors have been a growing topic of organizational concern [10], and feedback is an important environment factor that impacts subjective wellbeing [11]. Considerable evidence indicates that positive feedback and negative feedback may result in subjective wellbeing [12,13], and mixed feedback (including positive and negative feedback) is positively related to subjective wellbeing [14]. It is hard to know how 2 BioMed Research International to use feedback to improve subjective wellbeing; thus finding how the feedback influence subjective wellbeing becomes the problem that we should solve in this research.
What are the reasons for the inconsistency between subjective wellbeing and feedback and how to solve these problems?
First, feedback is taken as a dyadic method and compares the difference in one perspective. For example, according to valence, feedback can be divided into positive feedback and negative feedback. Some research found that positive feedback can improve subject wellbeing and negative feedback cannot, but some research found that negative feedback can improve subjective wellbeing if the feedback is accurate [12]. The feedback itself cannot be the former dependent variable, and the feedback's effects can be found with the interaction with feedback sources, feedback accuracy, and so on [15]. Previous studies have ignored the feedback recipients' construction, and the two-way communication effectiveness is not considered for the feedback of the recipient. In fact, the feedback behavior is interwoven with the feedback source, the feedback information, and the accuracy of the feedback, which is regulated by the individual to the feedback construction, and jointly influences the feedback effect [16]. Supervisor feedback environment has been pointed out as a crucial feature of subjective wellbeing management, which encompasses the contextual aspects of informal feedback process between the supervisor and subordinate [17]. Supportive supervisor feedback environment can lead to healthy performance systems; in this study we focus on the effects of supervisor feedback environment similar to previous studies [18].
Second, the existing research of how feedback impacts subjective wellbeing is not empirically supported [19]. Although prior research has demonstrated consistent relationships between feedback and subjective wellbeing [20,21], it is not clear how feedback impacts subjective wellbeing. With respect to motivation mechanism, self-determination theory (SDT) put forward the fundamental theory which shows how external environments impact on internal motivation and in turn resulted in behavior [22]. Considering the formation of subjective wellbeing, SDT has shown the importance of basic psychological needs satisfaction [23], which includes autonomy, relatedness, and competence needs satisfaction and refers to essential experience for wellbeing [22]. Also, research has demonstrated that supporting environment can positively impact on basic psychological need satisfaction [23]. Thus, basic psychological needs satisfaction plays a mediation role between feedback environment and subjective wellbeing.
Third, prior research on feedback has focused mainly on constructive feedback or supportive feedback which is always beneficial for subjective wellbeing in US [8,24] which has low power distance environment. China tends to be a high power distance country [25]; how feedback environment influences subjective wellbeing in high power distance country is not clear. Power distance refers to the extent to which people expect and accept that power is distributed unequally among persons and across different levels of the organizational hierarchy [26]. Because power distance can moderate the relationship between the feeling of empowerment and satisfaction [27], this finding would explore the moderation effect of high power distance on the influence of subjective wellbeing in question.
The aim of this study is to solve above problems by exploring how supportive supervisor feedback environment firstly led to basic psychological needs satisfaction, which in turn resulted in increased subjective wellbeing, and analyzing the moderating role of power distance.

Design and Data Collection.
The study was designed as a cross-sectional study of 492 government servants engaged in environment protection in Shandong China. They come from different cities in Shandong Province. As Shandong Province is in the heavy area of China's smog, civil servants working in environmental protection in Shandong Province have become the object of our investigation. As consulting the agreement of leader, all the samples completed the questionnaires during their work hours. Participants were told that the aim of this study was to learn more about government servants. Participants need not write their name and this was voluntary without negative consequences.
Government servants who agreed to participate answered self-report questionnaires concerning demographic conditions, supervisor feedback environment, basic psychological need satisfaction, and power distance as well as subjective wellbeing.
Supervisor Feedback Environment. We measured the supervisor feedback environment using Steelman et al. 's scale [17]. This Likert scale assesses each feedback environment dimension and the seven facets within each dimension (32 items in total): source credibility, feedback quality, feedback delivery, accuracy of favorable feedback, accuracy of unfavorable feedback, source availability, and promoting feedback seeking. Cronbach's for supervisor feedback environment was .93.
Basic Psychological Need Satisfaction. To assess basic psychological need satisfaction, we used a 9-item measure from Sheldon et al. [28], which taps into the satisfaction of autonomy and competence. An item from the basic psychological need satisfaction scale is as follows: "I feel a sense of choice and freedom in the things I undertake." Items were rated on a 5point Likert scale. Cronbach's alpha for basic psychological need satisfaction was .89.
Power Distance. The power distance scale was taken from the Robertson and Hoffman study [29]. The items were measured on a 7-point Likert scale ranging from (1) completely disagree to (7) completely agree. An example item is as follows: "managers should make most decisions without consulting subordinates." For the power distance scale, Cronbach's alpha coefficient was .85.
Subjective Wellbeing. In line with past research [1], the Satisfaction with Life Scale [30] was used to evaluate participants' life satisfaction. The Satisfaction with Life Scale includes five questions and has been used in China context well [31]. This 5-item scale assesses participants' level of satisfaction with their life in general using a 7-point Likert-type response scale. Cronbach's alpha for subjective wellbeing was .91.

Controls.
We controlled for sociodemographic differences including gender, education, organizational tenure, and age. We also controlled for coworker feedback environment using a measure from Steelman et al. 's scale [17], because the perception of coworker feedback environment may influence employee's ongoing feedback exchanges and satisfaction [17].

Statistical Analysis.
Pearson correlation analysis was used to determine the relationships among the supervisor feedback environment, basic psychological need satisfaction, power distance, and subjective wellbeing. Regression analysis was used to determine the proportion of variance using SPSS 22.0. To test mediation, we adopted the procedure proposed by Preacher and Hayes [32]. Before the analyses, all continuous predictors were well-centered. To calculate the indirect effects, this study utilized the SPSS macro PROCESS [33]. To test the moderation, this study examined 3 conditions [32]: (a) significant effect of supervisor feedback environment on subjective wellbeing; (b) significant interaction between supervisor feedback environment and power distance in predicting subjective wellbeing; (c) different conditional indirect effect of supervisor feedback environment on subjective wellbeing, across low and high levels of power distance. To further validate findings of moderation relationships, we utilized an SPSS macro designed by Preacher and Hayes [32]. Table 1 presents the means, standard deviations, and correlations among the study variables. An inspection of the correlations reveals that supervisor feedback environment was positively related to basic psychological needs satisfaction ( = .55, < 0.01) and subjective wellbeing ( = .36, < 0.01). The results also indicate that basic psychological needs satisfaction is positively correlated with the subjective wellbeing ( = .42, < 0.01) and power distance ( = .18, < 0.01).

Results
To examine whether basic psychological needs satisfaction acted as a mediator of the relations between supervisor feedback environment and subjective wellbeing and whether power distance acted as a moderator of the relations between supervisor feedback environment and subjective wellbeing, we adopted the procedure proposed by Preacher and Hayes [32]. As shown in Table 2  wellbeing (coeff = .57; 95% CI: .34-.80; < 0.01). After the effect of the supervisor feedback environment toward subjective wellbeing was controlled, basic psychological needs satisfaction significantly predicted subjective wellbeing (coeff = .39; 95% CI: .16-.62; < 0.01), power distance significantly predicted subjective wellbeing (coeff = −.35; 95% CI: .05-.52; < 0.05), and the interaction between supervisor feedback environment and power distance also significantly predicted subjective wellbeing (coeff = .37; 95% CI: .06-.67; < 0.05).
To calculate the indirect effects, we adopted the SPSS micro PROCESS [33]. Results in Table 3 show that the formal two-tailed significance test (assuming a normal distribution) demonstrated that the indirect effect was significant (Sobel = 3.15, < 0.01). Bootstrap results confirmed the Sobel test, with bootstrap 95% confidence interval of .11 to .47 around the indirect effect not containing zero. Taken together, supervisor feedback environment impacts subjective wellbeing via basic psychological needs satisfaction.
To further validate findings of moderation relationships, we used Preacher et al. 's (2007) statistical significance test, to compute a statistic for the conditional direct effect. More specifically, we operationalized high and low levels of power distance as one standard deviation, such as above the variable's mean score one standard deviation and below the variable's mean score one standard deviation. Results in Table 4 show that the conditional direct effect of supervisor feedback environment was stronger and significant in the high power distance (conditional indirect effect = .75, SE = .15, = 3.26, and < 0.01, with 95% confidence interval of .20 to .83) and in moderate level of power distance (conditional indirect effect = .56, SE = .12, = 2.01, and < 0.05, with 95% confidence interval of .01 to .55) but was stronger and not significant in the low power distance condition (conditional indirect effect = 0.36, SE = .16, and = 0.21, ns, with 95% confidence interval of −.32 to .40).
The results in Figure 1 show that the conditional direct effect of supervisor feedback environment was stronger and   Note. = 426. LL = lower limit; CI = confidence interval; UL = upper limit. Note. n = 426. LL = lower limit; CI = confidence interval; UL = upper limit.
BioMed Research International 5 more significant in the high power distance and was not significant in the low power distance. In sum, power distance acted as a moderator of the relations between supervisor feedback environment and subjective wellbeing.

Discussion
Our results indicate that employees in higher levels of supervisor feedback environment were more likely to experience subjective wellbeing. Full mediating effects were found for basic psychological needs satisfaction. Specifically, supervisor feedback environment firstly led to increased basic psychological needs satisfaction, which in turn resulted in increased subjective wellbeing. Additional analysis showed that the mediating effect of basic psychological needs satisfaction was stronger for employees who work in high power distance than in low power distance. The positive relationship between perceived supervisor feedback environment and subjective wellbeing underscores the importance of providing feedback from a credit source, perceived as accuracy and availability, and encouraging feedback seeking. Basic psychological needs satisfaction mediates the relationship between supervisor feedback environment and subjective wellbeing; particularly the relationship between supervisor feedback environment and subjective wellbeing is stronger for employee in the higher power distance. This indicates that for the employee who works in China context, because of the high power distance in organization, supervisor feedback environment is more important than the employee who works in US context.
Supervisor feedback environment had a significant effect on subjective wellbeing after controlling of the effects of demographics. This finding is consistent with Alcantara et al., who found that social support and favorable developmental contexts can positively influence subjective wellbeing [34]. Prior research also found that support was a significant predictor for positive affect and satisfaction [35]. Supervisor feedback environment would be beneficial for a broader conceptualization of psychological empowerment as included in the current study based on self-determination theory in particular [22]. Research has demonstrated that supportive feedback environment would contribute to outcomes like performance and wellbeing [20,36,37]. Supportive supervisor feedback environment may motivate employees to work in a more positive way and increase the internal motivation of dealing with the conflict between job and family, so the employees can feel more satisfaction [21].
Basic psychological needs satisfaction had a significant direct effect on subjective wellbeing and full mediating effects were found for basic psychological needs satisfaction between supervisor feedback environment and subjective wellbeing. These effects are consistent with Ç ankaya, who demonstrated that there was a relationship between support autonomy and psychological needs satisfaction related to subjective wellbeing [38]. Like support autonomy, supervisor feedback environment plays a vital role in basic psychological needs satisfaction and subjective wellbeing.
This study found that the interaction term for supervisor feedback environment with power distance significantly would influence subjective wellbeing. A good relationship with supervisor is more important for job satisfaction in high power distance cultures. For an employee who works in high power distance, supervisor feedback environment can give subordinate effective and available information which can satisfy subordinate's basic need; specifically, supportive feedback environment lets the employees feel more favorable for supervisor [21]. Thus, the positive relationship between supervisor feedback environment and subjective wellbeing is stronger in high power distance work.
Based on this study, supervisor should strive to build favorable feedback environment and give feedback with more consideration of employees' basic psychological needs. It is important not only to achieve flow of top-down feedback but also to ensure feedback in parallel communication. Managers should create a high-support and high-care working atmosphere. Similar to basic human needs, self-determination theory posits that psychological needs must be met to promote optimal levels of wellbeing and, in work contexts, performance. Under the guidance of people-oriented principles, the management of environment protection government servants may consider reforming to allow environment protection government servants to have a greater degree of self-determination in their duties and provide more opportunities to the officers to participate in decision-making about environment protection.
There are two limitations. One limitation is investigation method. This research has adopted a variable-centered approach like prior research test feedback environment. A variable-centered approach assumes that employee perceives each dimension of feedback environment equally. In fact, different dimension plays different role in feedback environment. A person-centered approach can explore insights into feedback environment by using latent profile investigation and, specifically, can understand the typologies of supervisor feedback environment. Second, although we used a timelag design to examine the role of feedback environment, the results of current research only concern the shortterm outcomes. The developing of subjective wellbeing is a dynamic process like feedback. The employee who has higher level of subjective wellbeing will show more positive affect to supervisor; then supervisor is likely to give more positive feedback. Future study can use dynamic approach to study how subjective wellbeing influences feedback environment.

Conclusion
The results from the study indicate that supervisor feedback environment plays a vital role in improving subjective wellbeing of government servants engaged in environmental protection through basic psychological needs satisfaction, especially in high power distance. Leaders who work in environmental protection agency should pay more attention to strive to build a supportive feedback environment for improving subjective wellbeing of government servants engaged in environmental protection.

Ethical Approval
This study was reviewed and approved by American Psychological Association Ethics Committee Rules and Procedures, APA Ethics Committee, with written informed consent from all participants.

Consent
All participants gave written informed consent in accordance with the Declaration of Helsinki.

Conflicts of Interest
The authors declare that there are no conflicts of interest regarding the publication of this paper. The mentioned received funding did not lead to any conflicts of interest regarding the publication of this manuscript.