China's rural-urban dual society system is instituted by its unique hukou system. This system causes inequalities in social status between permanent urban and rural residents, and discrimination against rural-to-urban migrants is thus prevalent. A series of studies, based on system justification theory, sought to address the impact of the hukou system on the discrimination against rural-to-urban migrants. Study 1 showed that the justification of the hukou system could predict discrimination operationalized using a social distance measure. Study 2 found that priming of the proposed abolishment of the current hukou system led to reduced social distance. Study 3, using a recruiting scenario, further demonstrated that priming of the proposed abolishment of the system led to reduced discrimination in salary decision. Consistent with our predictions, discrimination against rural-to-urban migrants could be triggered by justifying the current hukou system, while priming of the abolishment of the system serves to decrease discrimination. The present research thereby sheds light on China's reform of its hukou system to achieve social justice and equality from a psychological perspective.
Citation: Kuang L, Liu L (2012) Discrimination against Rural-to-Urban Migrants: The Role of the Hukou System in China. PLoS ONE 7(11): e46932. https://doi.org/10.1371/journal.pone.0046932
Editor: Tom Denson, The University of South Wales, Australia
Received: February 25, 2012; Accepted: September 10, 2012; Published: November 5, 2012
Copyright: © 2012 Kuang, Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Funding: This research was supported by the MOE Project of the Key Research Institute of Humanities and Social Sciences in University (2009JJDXLX001), the National Natural Science Foundation of China (71071021), and the Fundamental Research Funds for the Central Universities awarded to Li Liu. The funders had no role in study design, data collection, decision to publish or preparation of the manuscript.
Competing interests: The authors have declared that no competing interests exist.
Discrimination against marginalized groups is a global psychosocial phenomenon, but it retains its local character in a given social, cultural, and economic context. From a global perspective, racial minorities, people living with HIV/AIDS, the disabled, the obese, homosexuals, and the physically unattractive are all examples of targets of discrimination –. From a local perspective, discrimination against rural-to-urban migrants, due to the unique hukou system, is salient in China –. However, the role of social institutions, such as the hukou system, in discrimination is still subject to scientific debate. The aim of the current study is to explore the impact of the hukou system and its reform on discrimination against rural-to-urban migrants.
The hukou system, modeled from the Soviet propiska (internal passport), translates literally as the “household registration system” but differs substantially from other systems of household registration . Beginning in the 1950s, the Chinese government officially promulgated its hukou system to differentiate residential groups –. The hukou system was seen as an indispensable feature of Chinese socialist economic planning and was designed to forestall rural-to-urban migration . Every citizen is required to register at their permanent residence, as registration under the hukou system is the principal means of establishing one's official status in China . One's hukou status is inherited from one's mother and thus is predetermined. While initially conceived as an instrument for internal migration control, the hukou system was soon transformed into a social institution dividing Chinese society into spatial hierarchies . There is a dual classification in a person's hukou. The first is one's residence, which is commonly referred to as rural/urban area; and the second is one's socio-economic eligibility, which is commonly referred to as agricultural/non- agricultural category. Individuals registered under the agricultural category depended mainly on their own labor and the fluctuating harvests for survival; individuals registered under the non-agricultural category, on the other hand, were entitled to a “cradle-to-grave” welfare package provided by the government. As a result, urban residents were seen as superior to rural residents in terms of socio-economic status.
Since its shift towards economic liberalism in the 1980s, China has initiated a variety of reforms to the hukou system. Although the hukou system is no longer used to prevent rural-to-urban mobility, Chinese society can still be divided into an agricultural segment and a non-agricultural one. This division remains crucial in determining people's opportunities. There are a few channels by which one can convert from an agricultural to a non-agricultural hukou status, for instance, recruitment for enrollment in an institution of higher education. The further reform of the hukou system, as a controversial topic, has been widely discussed among policymakers and in the general public . The abolishment of the agricultural and non-agricultural hukou distinction has thus been tested in a few places as a pilot schema. However, the hukou system in general remains potent and continues to function as a key institution, perpetuating China's rural-urban disparity .
In China, The term “rural-to-urban migrants” refers to farmers-turned-workers who move from rural to urban areas for jobs and better lives without obtaining permanent urban residency . China's liberal economic reform has resulted in rapid economic growth in cities, which in turn creates millions of job vacancies. On the other hand, this economic growth significantly decreased arable land in rural areas, which in turn produced millions of surplus rural laborers . As a result, the restriction on rural-to-urban mobility has been relaxed. According to the Ministry of Human Resources and Social Security of China, in 2010, approximately 153.35 million rural residents had migrated into cities . However, the hukou system still denies the migrants permanent urban residency rights and many of the associated social benefits. As a consequence, they must move back and forth between the cities, where they work and temporarily reside, and their home villages, where they belong permanently. In this sense, it is the unequal system that disadvantages rural-to-urban migrants in Chinese society.
Despite their indispensable roles in Chinese economic growth, migrants, or “outsiders”, are segregated from urban host populations. They are considered “backward”, portrayed negatively by indigenous urban residents, and maltreated at work. They must work so-called “3D jobs” (dangerous, dirty and demeaning jobs) , that permanent urban residents generally find inferior and undesirable –. As such, an agricultural hukou functions as a maligned social label. People normally infer lower socioeconomic status and often negative traits for individuals with an agricultural hukou. Permanent urban residents have little desire for contact with the migrants unless they must . Social distance between the two groups has thus gradually increased –. Discrimination against rural-to-urban migrants is an irrefutable indicator of the strained relations between the two social groups. In short, the literature shows a high level of discrimination against rural-to-urban migrants. However, the impact of hukou system on the discrimination remains underexplored by psychologists, as does the answer for how to reduce it through effective political reform.
An unequal social institution in psychological literature is related to intergroup discrimination. The issue of intergroup discrimination has drawn great attention from the theories of social identity, social dominance, and system justification. However, they approach the issue from different perspectives. Social identity theory emphases the role of such cognitive processes as social categorization and social comparison in creating intergroup discrimination. It is evident that simply categorizing individuals into ingroup and outgroup is sufficient to generate intergroup relational problems –. Social dominance theory is a theory of intergroup relations that focuses on the maintenance and stability of group-based social hierarchy. It emphases the dynamics of power struggle between the members of dominant groups and subordinate groups .
The present research is based on system justification theory because hukou can be considered as a social system or an institution that promoting the status quo such that people with a non- agricultural hukou usually enjoy better social privileges than those with an agricultural hukou. System justification is defined as perceptions of the fairness, legitimacy, and justifiability of a social institution . System justification theory postulates that people in general are motivated to defend, justify, and bolster aspects of the status quo, including existing political institutions and social arrangements . The empirical researches on system justification have shown that stereotyping and prejudice are related to attitudes about social and political systems. Specifically, as the tendency of perceiving political or economic inequality to be fair, legitimate, and necessary increase, members of high-status groups will exhibit increased ingroup favoritism –. Increased prejudice can be predicted by justifying and rationalizing existing inequality, because stereotypes and other social judgments might be a kind of ideological support for the prevailing social system . Similarly, researchers have found that people who consider the unequal system or hierarchy to be good are more likely to derogate members of disadvantaged groups, such as African Americans, homosexuals and the obese –. Overall, the justification of an unequal social system, which serves to support the imbalanced arrangement, endorses discrimination against members of low-status groups.
Although system justification motivation is generally associated with prejudice and denial of social change, it is possible to harness this motivation in a constructive manner. Experiments by Kay, Jimenez, and Jost suggest that, when regime change seems highly probable, people begin to rationalize the new arrangements almost immediately . They are more willing to embrace social change, instead of resisting, when the change seems inevitable. It can be inferred that implementing a new social institutions that emphasizes social integration and equality will make people embrace the reform, which might be associated with decreased prejudice and discrimination. The evidence about racism in America supports our inference. For instance, landmark legislative decisions in America (e.g., the Supreme Court ruling on school desegregation in 1954 and the Civil Rights laws of the early 1960s) have made race-based discrimination illegal . Then in the subsequent 50 years, overt expression of discrimination against African-Americans appears to have decreased –. These findings are also consistent with Perlstein's assertion that the reform of a social system directly reduces discrimination . Overall, it is evident that intergroup discrimination is affected by political actions, whether the actions are imagined or real . Thus, it is reasonable to predict that reform of the current hukou system can help to reduce discrimination against rural-to-urban migrants in China.
In sum, the evidence suggests that (a) the justification of an unequal system is associated with stereotyping and prejudice towards disadvantaged groups; (b) an inevitable political reform will be immediately rationalized by people; and (c) political reform promoting social integration can reduce discrimination. Based on these previous findings, we raise a possibility: justification of the unequal hukou system and the reform of system could have a great impact on discrimination against rural-to-urban migrants in China. Because two types of potential policy, the abolishment versus preservation of the current hukou system have been widely circulated in public discourse, reading a related article can raise the accessibility of one type of the policy. We specifically predict that 1) justification of the current hukou system is associated with discrimination against rural-to-urban migrants and 2) priming the preservation of the current system could potentially trigger discrimination, while priming abolishment of the unequal system would serve to decrease the discrimination.
For the current research, we used both correlational and experimental designs to examine the extent to which the hukou system impacts discrimination against rural-to-urban migrants. Three studies were conducted to test our predictions. Study 1 was designed to investigate the association between justification and discrimination in the current hukou system. In Study 2, the causal effect of the hukou system on discrimination was examined by experimentally manipulating the hukou system's reform. We expected that discrimination would decrease when the hukou system was primed to be abolished and vice versa. In Study 3, using an employment recruiting scenario, we explored whether discrimination in such a context could be reduced by priming abolishment of the hukou system, thus testing the generality of our findings.
The study was reviewed and approved by the Committee of Protection of Subjects at Beijing Normal University. All participants provided written informed consent before the study, and they were fully debriefed at the end of the research according to the established guidelines of the committee. This procedure was followed in Studies 2 and 3 as well.
In Study 1, 157 undergraduate students (102 females, 54 males, 1 did not report gender) participated. All of the participants were registered in the non-agricultural hukou category when enrolled in the study. Among them, 52.2% reported that they were originally registered in the non-agricultural hukou category prior to their university enrollment, and 47.8% reported that they were originally registered in the agricultural hukou category prior to their university enrollment.
Measures and procedures.
A questionnaire was administrated to all participants. The questionnaire consisted of three parts, and the items were all measured on a 7-point scale, ranging from 1 (completely disagree) to 7 (completely agree), except in part 3.
Part 1 contained a brief introduction to the current hukou system in China and an 8-item hukou system justification scale. Adapted from Kay and Jost's items, the scale was used to measure perceptions of the fairness, legitimacy, and justifiability of the hukou system in China (for example, “In general, the hukou system in China operates as it should”, and “The Chinese hukou system needs to be radically restructured” (reverse-scored)) . Participants were asked to indicate their degree of agreement or disagreement with each item. One of the 8 items was excluded during analysis to obtain satisfactory reliability (α = .820) (the dropped item was “Most policies related to hukou serve the greater good”). Higher scores indicated increased levels of system justification.
In part 2, a 9-item adapted Bogardus social distance scale was used to measure discrimination against rural-to-urban migrants (for instance, “I prefer to avoid to contact with rural-to-urban migrants”) . Higher scores represented a greater desire to distance oneself from rural-to-urban migrants (α = .912).
In part 3, the participants were required to complete the Responding Desirably on Attitudes and Options Scale (RD-16) to control for socially desirable responding (for example, “I feel that I am better off than my parents were at my age”) –. The scale consisted of 16 items that were all measured on a 2-point scale (1 = disagree, 2 = agree). Higher scores were coded to indicate a higher level of social desirability (α = .701).
Results and Discussion
The descriptive analysis and correlations between the 3 continuous variables are presented in Table 1 below. As Table 1 shows, both the justification of the hukou system and social desirability are significantly correlated with discrimination.
We first conducted an one way ANOVA (original hukou category: agricultural vs. non-agricultural) to examine the effect of participants' original hukou category on justification of the hukou system. The result showed that there were significant difference in terms of system justification scores between participants who were originally registered in the agricultural vs. non-agricultural categories (F (1, 156) = 4.723, p = .031). The participants originally categorized as non-agricultural hukou citizens considered the current hukou system more legitimate and fair (M = 3.46, SD = 1.06) than those who were originally agricultural hukou citizens (M = 3.10, SD = 1.03).
Subsequently, we regressed discrimination onto justification of the hukou system, original hukou category, and justification×original hukou category interaction, to examine whether participants' justifications for the hukou system predicted their discrimination, regardless of their original hukou category. Before analysis, those who originally registered in the agricultural hukou category were coded “0”, while those registered in the non-agricultural hukou category were coded “1”. The hierarchical regression revealed that, after statistically controlling for the effects of social desirability, the main effects of justification of the hukou system (β = .171, t = 2.320, p<.05) and original hukou category (β = .339, t = 4.602, p<.001) were both significant. As predicted, discrimination against rural-to-urban migrants at least partially originated from justification of the hukou system. Specifically, greater justification of the unequal hukou system by participants predicted stronger discrimination by those same individuals. In addition, discrimination against rural-to-urban migrants was associated with the participants' original hukou category. However, an insignificant justification×hukou type interaction (β = .033, t = .455, p = .650) was found, indicating that the participants' original hukou category did not moderate the association between justification of the hukou system and discrimination. Overall, no matter what their original hukou categories were, participants' discrimination against rural-to-urban migrants could be significantly predicted by their justification of the hukou system.
These results are consistent with the vast literature indicating that justification of an unequal social system is positively associated with discrimination –. The current study extended previous research by first clarifying the relationship between system justification and discrimination in the context of China's unique hukou system. This study suggests that to increase Chinese social cohesion, the reform of the unequal social institution is badly needed. However, it remains unclear whether discrimination against rural-to-urban migrants could be reduced through the reform of the hukou system. This is what we focused on in Studies 2 and 3.
Study 1 revealed an association between the unequal hukou system and discrimination against rural-to-urban migrants. However, the correlational design of Study 1 did not allow for the investigation of the causal impact of the hukou system on discrimination. More importantly, it is worth exploring whether discrimination against migrants could be directly reduced through reform of the hukou system. Therefore, an experimental manipulation of the reform of the hukou system was used in Study 2 to investigate the issue. We hypothesized that anticipated abolishment of the hukou system, primed by mock articles, would decrease discrimination against migrants.
Undergraduates in Beijing voluntarily participated in the study. After removal of 4 students' data by the manipulation check, the data from 54 participants (46 males, 8 females) were entered. All of the participants were registered in the non-agricultural hukou category when they participated in the study. Among them, 35 participants (64.8% of the sample) reported that they were originally registered in the non-agricultural hukou category prior to their university enrollment, while the rest of the sample was originally registered in the agricultural hukou category. The participants were randomly assigned to one of two between-subjects priming conditions, abolishing versus preserving the current system.
Materials and procedures.
The reform of the hukou system was primed by one of two mock articles. In the abolishing condition, participants read the article indicating that “the Chinese government announces that the agricultural and non-agricultural hukou distinction is expected to be eliminated in 2016” (Figure S1 & Text S1). In the preserving condition, the article indicating “the Chinese government announces that the reform of agricultural and non-agricultural hukou distinction needs more investigation and that the current hukou system will be retained over a long period of time” (Figure S2 & Text S2).
After reading, the participants were asked to complete a 3-item manipulation check. The first two items were aimed at assessing the difficulty of the reading (“Do you feel the article was easy to understand?” and “Do you feel the expression of the article was clear?”). The third item checked participants' understanding of the article (“Which of the following sentences best summarizes the article?”). Only participants who felt that the priming material was not difficult to read and chose the correct summarizing sentence during the manipulation check were included in further analysis.
In the following steps, the participants were asked to complete the adapted Bogardus social distance scale (α = .891) and the RD-16 scale (α = .598) –, which were identical to the ones used in Study 1, to indicate their discrimination against the migrants and their social desirability, respectively.
Results and Discussion
We conducted a 2 (priming: abolishment vs. preservation)×2 (original hukou category: agricultural vs. non-agricultural) ANOVA controlling for social desirability to examine the effects of priming of the hukou system's abolishment or preservation and the participants' original hukou category on discrimination. The main effects of priming (F (1, 52) = 5.416, p<.05, ηp2 = .100) and original hukou category (F (1, 52) = 15.862, p<.001, ηp2 = .245) were both significant. As predicted, after statistically controlling for the effects of social desirability, the discrimination reported in the abolishing condition was less than that in the preserving condition (Table 2). In addition, the participants originally categorized as agricultural hukou citizens reported significantly less discrimination than those who were originally non-agricultural hukou citizens (Table 2). Again, no significant interaction was found between priming of the hukou system's abolishment or preservation and the original hukou category (F (1, 52) = 1.370, p = .248, ηp2 = .027). The results suggested that regardless of their hukou categories, the participants reported less discrimination when the unequal hukou system was primed to be abolished than when it was primed to be preserved.
Consistent with our prediction, when priming for the abolishment of the hukou system, the participants showed lower levels of discrimination against migrants. This result provided additional experimental support for previous work asserting that intergroup discrimination can be affected by political reformation, whether the action was imagined or real , .
In addition, the effect of participants' hukou categories prior to university enrollment on discrimination in both Studies 1 and 2 was striking but reasonable. To some extent, the university students who were originally registered in the agricultural hukou category at birth but had moved into the non-agricultural hukou category due to their university enrollment are still “migrants from the countryside”. As such, their discrimination against rural-to-urban migrants is lower than that of individuals who have been living in cities since birth. Regardless of where participants are from, however, their discrimination against rural-to-urban migrants can be reduced by priming the abolishment of the current hukou system, further confirming our hypothesis.
The evidence for the causal effect of the hukou system's reform on discrimination was compelling in Study 2. However, Studies 1 and 2 both used the index of social distance for the assessment of discrimination. Is it possible to replicate the findings in a contextualized situation, using a different indicator of discrimination? The objective of Study 3 was to further confirm the findings of Study 2 using an employment recruiting scenario, thereby generalizing the findings.
In Study 3, the hiring preference for two job candidates (a permanent urban resident vs. a rural-to-urban migrant) was used to indicate the levels of discrimination. This decision was based on the rationale that unwillingness to accept members of an outgroup as colleagues is a symbol of intergroup discrimination , . We expected the difference in hiring preference for the two candidates to be smaller when the hukou system was primed to be abolished than when the system was primed to be preserved.
Undergraduates in Beijing voluntarily participated in Study 3. After removal of 7 students' data by the manipulation check, the data from 134 participants (101 males, 33 females) were entered. All of the participants were registered in the non-agricultural hukou category when they participated in the study. Among the participants, 61.2% reported that they were originally registered in the non-agricultural hukou category prior to their university enrollment, while 38.8% reported that they were registered in the non-agricultural hukou category prior to their university enrollment. All of the participants were randomly assigned to a priming condition (abolishing or preserving the system).
Materials and procedures.
The study used a 2 (the priming of the hukou system: abolishing the hukou system vs. preserving the hukou system)×2 (original hukou category: agricultural vs. non-agricultural)×2 (job candidate type: a permanent urban resident vs. a rural-to-urban migrant) mixed design. The first two are between-subjects factors, while the last one is within-subjects factor. The participants were first asked to read one of the priming materials used in Study 2. The manipulation check was also the same as in Study 2.
After the priming, the participants were asked to read a recruitment notice following the Goldberg paradigm , describing a job vacancy for a customer service staff member in an insurance company. Within the recruitment notice, requirements and responsibilities of the job were introduced in detail (see supplementary materials). The participants, who were asked to act as a HR recruitment specialist of the company in the situation, needed to read and evaluate resumes of the two candidates who were competing for the position. Four sections were included in each resume: career objective, self-assessment, work experience and educational background (Text S3). The two resumes were set equal in objective qualifications, except for their hukou identifications: one was a permanent urban resident holding a non-agricultural hukou status, while the other was a rural-to-urban migrant holding an agricultural hukou status.
After reading each resume, the participants completed a questionnaire consisting of four parts (Text S4). The first part was a 4-item manipulation check to make sure that participants read the resumes carefully (for example, fill in the last 4 digits of the candidate's mobile number). The second part was designed to indicate the participants' perceptions of two candidates' qualifications, including the candidates' prior work experience (for example, “the strength of past experience”) and the overall impression of the candidates. The third part was designed to reveal participants' blatant and explicit discrimination operationalized using a hire decision measure (“If you were offering the job, how likely is it that you would hire the applicant?”). The fourth part was designed to reveal participants' subtle and indirect discrimination operationalized using a salary entitlement measure (“If the applicant were hired, how much do you think the person should earn (Yuan)?”. All of the measures were completed using a 7-point Likert-type scale. For the salary entitlement measure, Yuan, the Chinese currency unit was labeled in the 7-point Likert scale, that is, 1 = 1,600 Yuan, 2 = 2,000 Yuan, 3 = 2,400 Yuan, 4 = 2,800 Yuan, 5 = 3,200 Yuan, 6 = 3,600 Yuan, and 7 = 4,000 Yuan. The Cronbach's alphas were both tolerable (αurban = .907; αmigrant = .885). The participants also completed the RD-16 scale (α = .646) used in Studies 1 and 2 –.
Results and Discussion
A 2 (prime: abolishment vs. preservation)×2 (original hukou category: agricultural vs. non-agricultural)×2 (job candidate type: urban resident vs. rural-to-urban migrant) Repeated Measure controlling for social desirability was conducted. First, we tested the main effects of the within-subjects factor (job candidate type). After statistically controlling for the effect of social desirability, there was no significant difference in the evaluation of prior work experience or overall impression between the two candidates (Table 3). It suggested, participants believed that the two candidates were “equal” in qualifications, which was consistent with our expectations. In addition, the results revealed that the main effect of job candidate type was not significant for either the likelihood of hire or salary offer (Table 3).
Furthermore, two between-subjects factors (the priming of the hukou system's status and the participants' original hukou categories) were included in the repeated measures to test whether they would influence the difference of the likelihood of hire for the two candidates. The results revealed that neither the priming nor the participants' original hukou categories had significant effects on differences in the likelihood of hire. The interaction effect of these two factors was also insignificant (Tables 4 & 5). In other words, regardless of the hukou system's reform status and the participants' original hukou categories, the difference in likelihood of hire for the two candidates did not vary significantly.
However, as predicted, the priming of the hukou system's status significantly influenced the salary prospects of the two candidates (F(1, 127) = 7.107, p<.01, η2 = .053, Tables 4 & 5). Specifically, the difference between the two candidates' potential salaries in the abolishing condition was smaller than the difference in the preserving condition (Figure 1). In other words, our hypothesis was partially supported by the effect of priming for the hukou system's abolishment on salary in this study. The main effect of original hukou category on the salary difference was also significant (F (1, 127) = 6.735, p<.05, ηp2 = .050, Tables 4 & 5). This effect was consistent with the findings of Studies 1 and 2. However, the analysis failed to find a significant interaction between hukou system reform status and original hukou category (F (1, 127) = .126, p = .723, ηp2 = .001, Tables 4 & 5). This result indicated that for the participants originally registered in either the non-agricultural or agricultural hukou categories, the difference in salary offers to the two candidates could be predicted by the priming for hukou system reform.
The priming of the hukou system's status significantly influenced the salary prospects of the two candidates. Specifically, the difference between the two candidates' potential salaries in the abolishing condition was smaller than the difference in the preserving condition.
The most important finding of this study is that the difference between the two candidates' salaries after primed abolishing the hukou system was smaller than the salary difference under the current hukou system. In other words, priming abolishment of the hukou system reduced differences in proposed salaries between the two candidates. These findings provide further evidence that reform of the hukou system had an impact on discrimination against migrants. Previous research shows that disadvantaged groups are often rated negatively and offered less entitlement in occupational contexts –. However, with the improvement of social institution and norms, discrimination against disadvantaged groups has declined in the past few decades –. Consistent with these studies, the implication of the findings from our study is compelling; when primed preserving the current hukou system, the system itself gave unfair treatment to rural-to-urban migrants, and the migrants were belittled as a disadvantaged social group. However, in the case of hukou abolishment, system reform would promote equal treatment for rural-to-urban migrants and permanent urban residents.
Interestingly, the impact of hukou system's reform on the overt expression of discrimination against the migrants, indicated by the likelihood of hire, was not found in this study. It suggested that blatant or explicit discrimination displaying in a hiring decision was probably suppressed because the Chinese government has recently promulgated regulations against blatant discrimination . People then turn to choose more subtle and indirect form to express their discrimination because it provides a cover, and protects a sense of egalitarianism and a non-prejudiced self-image .
Overall, the findings of the three studies support our hypotheses; the Chinese hukou system is an institutional cause of discrimination against rural-to-urban migrants, while the priming abolishment of such a system serves to decrease discrimination. In Study 1, we showed that justification of the unequal hukou system is positively associated with discrimination operationalized as social distance, while in Study 2, we examined the effects of the hukou system's reform on discrimination. The results showed that social distance could be reduced when the system was primed to be abolished. In Study 3, we tested the generality of our findings and investigated whether the results of Study 2 could be replicated in an employment recruiting scenario. We found evidence that priming abolishment of the hukou system could reduce subtle discrimination operationalized as salary entitlement.
The current research demonstrates that system justification theory developed in western culture can be exported and tested in a Chinese cultural context. The rationale of the theory can be applied to explain and predict intergroup relation problems in China. At the same time, focusing on the impacts of the justification of China's unique hukou system, and its highly probable reform, on the discrimination against rural-to-urban migrants, the findings reported in the current research provides additional support for system justification theory.
System justification theory has gained its currency due to its critical and innovative contributions to intergroup relations research . For many years, system justification research is much concerned with social control. That is, basic proposition of system justification theory is that people are motivated to defend, bolster and justify social, economic and political institutions and arrangements even when opportunities to rectify injustice are available –. At the same time, with regard to the prospect for social change, limited research suggests that system justification motivation leads people to either resist or embrace social change . However, an important limitation in system justification literature is lack of empirical research on the effect of social shift on intergroup relations. To solve the limitation, the current research approaches the issue from a socially highly relevant context of the hukou system reform in China. It takes advantage of the unique historical opportunity of dramatic social transition in China to experimentally investigate the effect of a perceived hukou system shift on the discrimination against rural-to-urban migrants. It thereby establishes a theoretical connection between (a) people engage in anticipatory rationalization of likely sociopolitical outcomes  and (b) stereotyping and prejudice are related to attitudes about sociopolitical systems in system justification research . In doing so, system justification is no longer restrict itself to serve to justify the status quo and bolster the legitimacy of the existing social order, but sheds light on social psychological consequences of sociopolitical transition. Indeed, the findings of the current research imply that framing proposed social change as “system-sanctioned” (i.e, the implementation of hukou system reform is seen as inevitable in this research) would lead to decrease the discrimination against disadvantaged groups. It thus provides very strong support for Jost and Hamilton's theoretical argument that “any effective attempt to ameliorate prejudice must take into account its unmistakable societal origin and lead ultimately to an unraveling of familiar justifications” .
From a practical perspective, we hope that the current research can bring psychological enlightenment to the compelling social issue of the hukou system in China. To the best of our knowledge, the current research is the first empirical study investigating the impact of the Chinese hukou system on intergroup relations. Sociologists and economists have already provided solid evidence that the current hukou system plays an important role in the allocation of economic resources, educational opportunities and other welfare benefits for rural-to-urban migrants –. Such inequalities have created many social problems, such as the rural-urban social division , . However, it is still unclear whether the hukou system shapes individuals' attitude and behavior towards disadvantaged outgroups. Our research constitutes an initial step towards answering this question from a psychological perspective. The findings are promising, suggesting that if the current hukou system were to be abolished, discrimination against rural-to-urban migrants may be reduced. Meanwhile, it can be inferred from the findings that the rationalization of political reform and a new social institution is crucial in order for the government to eliminate inequality between different social groups and promote social inclusion.
Priming material of the abolishing condition in Studies 2&3. The article read by participants in the abolishing condition indicates that “the Chinese government announces that the agricultural and non-agricultural hukou distinction is expected to be eliminated in 2016”. It can raise the accessibility of the policy about abolishment of the current hukou system.
Priming material of the preserving condition in Studies 2&3. The article read by participants in the preserving condition indicates that “the Chinese government announces that the reform of agricultural and non-agricultural hukou distinction needs more investigation and that the current hukou system will be retained over a long period of time”. It can raise the accessibility of the policy about preservation of the current hukou system.
Priming material of the abolishing condition in English. The English version of Figure S1.
Priming material of the preserving condition in English. The English version of Figure S2.
Recruitment notice and resumes of the candidates. These are materials used in Study 3. Within the recruitment notice, requirements and responsibilities of a vacant job are introduced. And the resumes of two candidates, which respectively contains four sections, are showed after the notice.
The authors would like to thank the academic Editor and the three anonymous reviewers for their encouraging comments and insightful suggestions. We are also grateful to Prof Yingyi Hong for her great help for the revision.
Conceived and designed the experiments: LK LL. Performed the experiments: LK. Analyzed the data: LK. Wrote the paper: LK LL.
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