2.1. Literature Reviews of Packaging Waste and Recycling Behavior
China grew fastest in the world, and China’s growth has resulted in a burgeoning waste management problem [
13]. Municipal solid waste mainly consists of residential, institutional, street cleaning, commercial and industrial wastes in China. Chinese municipal solid waste has increased from 31.3 to 113.0 million tons from 1980 to 1998, following an annual increase rate of 3–10%. Chinese municipal solid waste categories in China comprise kitchen wastes, paper, plastic, glass, batteries, metal, brick and stones, fabric, pottery, and discarded domestic appliances [
14].
Some researchers have realized that rapid development of express delivery and online shopping is imposing a serious burden on the environment [
15] and have tried to mitigate the pollution caused by express packaging through low-carbon design [
16], yet a focus on studying EPWR is rare. Most studies focus on studying the design and recycling of food packaging [
17,
18] and plastic packaging [
19,
20]. Among these, European researchers carry out more studies on recycling of packaging waste: Rui et al. [
21] study the economic feasibility of a packaging waste recycling system and compares the possibilities between Portugal and Belgium; Mrkajić et al. [
22] use quantitative and qualitative methods to evaluate the effectiveness of the Serbian packaging waste recycling system and find that prolonging the producer responsibility system could effectively improve the operating efficiency of recycling; Yıldız-Geyhan et al. [
23] measure different packaging waste recycling systems from the perspective of the social life cycle and discover that a regular recycling system scores better than existing recycling systems and informal recycling channels.
Recycling behavior has gradually become a topic of global concern as an easy-to-implement and enforceable environmentally responsible behavior [
24,
25]. As early as a decade ago, Tonglet et al. [
26] and Robinson and Read [
27] investigate the recycling behavior of residents in the London Borough and Brixworth areas using questionnaires. In recent years, researchers study recycling behavior at a more microscopic scale. In predicting recycling behavior, Chan and Bishop [
28] examine how the moral code extends the TPB theory. Similarly, Wan et al. [
29] expand the model of recycling attitude and recycling behavior, then propose a new research variable known as policy effect perception. Taking the point when recycling attitude affects recycling behavior as an entry point, Huffman et al. [
24] compare the various effects of social factors and worldview on both self-reported and observed recycling behavior. Miliute-Plepiene et al. [
30], Oztekin et al. [
31], Poškus and Žukauskienė [
25] focus on the effects of maturity, gender, and personality type on the recovery mechanism, respectively. With the continuous advancement of society, research on recycling behavior is no longer limited to traditional recyclables. Hu and Yu [
32] and Wang et al. [
33] study the intention to recycle e-waste. In studying recycling behaviors, new research methodologies are rare, and researchers focus mainly on structural equation model [
29,
31,
32,
34], linear or logistic regression [
24,
35,
36,
37], or a combination of the above methods [
38].
2.2. Theoretical Framework of Behavioral Science
As a necessary process of behavioral occurrence, behavioral intention is the decisive factor before the behavior occurs [
39], as well as the psychological tendency and subjective probability of the individual before performing the behavior [
40]. Behavioral intention is an important mediator of behavior because other subjective psychological factors indirectly affect actual behavior through behavioral intention. Researchers often apply the Theory of Planned Behavior (TPB) and Attitude-Behavior-Condition (ABC) theory to predict behavior and behavioral intentions. TPB is the theory of the relationship between attitude and behavior as posed by Ajzen. It is the inheritance and continuation of rational behavior theory and attitude theory and is also an influential theoretical framework in various fields such as behavioral research. A large number of empirical studies have proven that it can significantly improve the ability to interpret and predict behavior [
41]. According to TPB, human behavior is planned, and recycling behavior is determined by behavioral intention. Behavioral attitudes, subjective norms, and perceived behavioral control are the three major factors influencing behavioral intentions. Unlike TPB, ABC theory treats external conditions as an important factor to promoting and restricting behavior. External conditions mainly refer to behavioral convenience, namely situational factors, and ABC theory holds that behavior will occur when the cumulative effect of external conditions and attitudes is positive [
42]. Mannetti et al. [
38] propose that these two theoretical frameworks can be used to study people’s participation in recycling and that the incentives of the two frameworks are attitudes and material incentives, respectively. Previous studies in psychology have focused on the framework of attitudes. In recent years, researchers in different fields have been more willing to let these two frameworks learn from each other.
Behavioral attitude is an important psychological variable for predicting environmental behavior, and positive environmental attitude will significantly promote the generation of environmental behavior [
43]. Sia et al. [
44] hold that attitude variables include values, beliefs, and environmental concern, whereas Kaiser et al. [
45] argue that environmental attitude variable includes environmental knowledge, environmental values, and environmental behavioral tendencies. Values are the foundation of attitude formation [
46], and environmental issues always involve conflicts between individual and collective interests. Therefore, values play an important role in predicting environmental behavior. Stern et al. [
47] divide values into ecological, egoistic, and altruistic values. Later researchers discover that different values could form different new ecological paradigms. For example, altruistic and ecological values are positively related to environmental behavior while egoistic values are in contrast [
48]. Environmental concern is also important to forming environmental attitudes, and improved attitude can further consolidate recycling behavior; hence, environmental concern is the positive latent variable of recycling intention [
34,
49]. Base on the relevant theory of behavior, as an individual’s personality varies there is a positive correlation between knowledge and behavior [
50]. Environmental knowledge is an important antecedent variable of behavior, which has a significant impact on the intention to recycle and, thus, promotes the generation of behavior [
32,
45,
51].
On the cognitive level of recycling behavior, Stern et al. [
47] find that environmental responsibility is of great importance for predicting recycling behavior and that individual behavioral intention is also restricted by other individuals or groups. Castronova [
52] and Robinson and Read [
25] consider that role models are conducive to promoting interactional emulation and learning potential; that is, a herd mentality can lead to generation of recycling behavior. Regarding the important components of the behavioral system, Davies et al. [
53], Tonglet et al. [
26], and Wan et al. [
29] believe that behavioral perception has an impact on behavioral intention and that the reaction results mainly affect behavior through its information and motivation functions, that is, through psychological cognition [
54]. Behavioral control perception, a key variable in formation of TPB theory, has a positive effect on behavioral intentions. A strong perception of behavioral control can enhance an individual’s willingness to carry out behavior [
55]. The conclusions of Davies et al. [
53] and Tonglet et al. [
26] support this theory, and Oztekin et al. [
56] further find that compares with men, women recycling behavior is more susceptible to behavioral control perception.
As stated above, environmental behavior is also affected by the external environmental context [
37,
57]. Of the situational factors, social norms are the basic principles for determining and adjusting people’s common activities and the relationships between people and are the necessary code of conduct for the entire society and members of various social groups [
58]. Whitmarsh [
59] discovers that public pressure from families and neighbors is highly effective in directing the environmental behavior of residents and can be a significant factor in predicting behavioral intention. Therefore, the role of social norms in environmental behavior should be emphasized. Miliute-Plepiene et al. [
30] also propose that social norms are particularly important to the early stages of recycling systems. In addition, the perceived pressure of social norms is particularly significant in the Chinese cultural environment, which encourages people to adopt relevant behavior to integrate into society smoothly [
60,
61]. Chen et al. [
62] and Poortinga et al. [
63] also find that economic incentives are important external dependent variables that influence behavioral intentions. Although policy institutions are an important manifestation of government-constrained individual behavior and states can adopt persuasive or mandatory mechanisms to increase the enthusiasm of public participation [
64], which are an important inducement for residents to participate in specific behavior [
65]. At the same time, publicity can enhance residents’ perceptions and understanding, thereby improving residents’ behavioral choices and regulating the influence of behavioral intention on recycling behaviors [
32,
66,
67]. However, some studies find that the impact of publicity on behavioral intention varies due to differences in social and cultural background [
68].
In addition, the interpersonal behavior theory proposed by Triandis [
69] states that behavioral habits and rules also have an impact on the occurrence of behavior. In other words, the more entrenched a specific habit is, the fewer obstacles there are for implementing behavior and the easier it is to generate the behavior. Michiyo [
70] finds that when predicting recycling behavior, historical recovery experience is a better predictor than behavioral attitude; Tonglet et al. [
26], Klöckner and Oppedal [
71], and Knussen and Yule [
72] also consider recycling behavior habits and lifestyle as important predictive variables and find that the recycling habits of men have a greater effect on behavioral intentions [
56].
In summary, researchers hold many different opinions on the factors affecting the intention to recycle, yet most of them are based on the theoretical framework of TPB and ABC. TPB allows variables to be added to the theoretical model to enhance its explanatory power and predictive validity [
31,
39,
73]. Thus, this study, referring to TPB and ABC theory, augments indicator variables such as knowledge of recycling, concern about recycling problems, herd mentality, behavioral result perception, social norms, and historical recycling behavior to improve the accuracy of behavioral intention prediction. The questionnaire selects a set of variables that predict the behavioral intention of recycling, as shown in
Figure 1: recycling behavioral attitudes (including environmental values, concern about recycling problems, and knowledge of recycling), recycling behavior recognition (including environmental responsibility, herd mentality, behavioral result perception, and perceived behavioral control), situational factors (including social norms, economic incentives, perceived effectiveness of policy and publicity), and historical recycling behavior (including Habits adjustment behavior, and Interpersonal facilitation behavior). The specific logical hypothesis is that the psychological characteristic factors, namely recycling behavior attitude (RBA) and recycling behavior recognition (RBR), as well as historical recycling behavior (HCB) have a direct impact on the behavioral intention of recycling and conservation (BIRC). The situational factor (SF) is the adjustment factor of the psychological characteristics affecting BIRC, and the social population variable (SPV) affects people’s recycling behavioral habits. In addition, the normative nature of the recycling system [
29] and the availability of recycling facilities [
36,
41,
74] also have impacts on behavioral intentions. Therefore, these considerations are included when designing the questionnaire content.
Table 1 presents the meanings of the abbreviations for these variables in the text.