3.2. Research Hypotheses
This study primarily adopted the information systems (IS) success model and the concept of interaction to explore the variables influencing learners’ perspectives about online education. Among the six dimensions of the IS success model, course quality refers to the quality of e-learning system outputs, which include course knowledge and the authority of teaching content [
28]. Information quality captures the content issue of the information system [
25]. Hence, course quality and information quality have similar connotations. In this study, course quality (CQ) replaced information quality in order to emphasize its pedagogical implications because the quality of well-designed courses is considered more crucial in the context of online education [
14]. As a crucial dimension of perceived quality, service quality, which refers to the whole gamut of support received from the service provider, has started playing an increasingly significant role [
25]. Broadly speaking, the improvement of course quality plays a considerable role in optimizing service quality. In this case, there is an intimate correlation between course quality and service quality. Therefore, a relationship between course quality and service quality is proposed in Hypothesis 1.
Hypothesis 1 (H1). Course quality has a positive effect on service quality.
The interaction between human beings and the environment is considered a crucial aspect in understanding an individual completely [
44]. Students view student–instructor (SI) interaction as the most reliable element [
30]. Furthermore, service quality is characterized by the overall support that users get from support providers, including support received from online learning platforms or systems [
29]. High levels of service quality from support providers promote smoother interactions between students and instructors. Therefore, the hypothesis on the relationship between service quality and student–instructor interaction is as follows:
Hypothesis 2 (H2). Service quality has a positive effect on SI interaction.
Anderson suggested that developments in information technology, improvements in storage capabilities, and increases in functionality offer the opportunity to transform student–student (SS) interaction and student–instructor (SI) interaction into enhanced modes of student–content (SC) interaction [
30]. In the context of a new technical revolution, student–student interaction enables students to understand the learning content in a more intellectual way and gradually change their cognitive structure. Therefore, the hypothesis on the relationship between student–student interaction and student–content interaction is as follows:
Hypothesis 3 (H3). SS interaction has a positive effect on SC interaction.
Zeithaml believed that consumers’ perceived value is their overall perception of products based on a cost–benefit analysis [
35]. Patterson and Spreng pointed out that the comprehensive trade-off between perceived gains and losses is the essence of consumers’ perceived value in their comprehensive evaluation of products and services [
41]. When learners select an online course to pursue, course quality is one of the important issues to be considered. At the same time, course quality also has a significant influence on learners’ decisions regarding whether to continue online learning after a period of time. As course quality increases, online learners’ perceived value of courses is likely to increase, which facilitates their retention in online courses. Therefore, the hypothesis on the relationship between course quality and learners’ perceived value is as follows:
Hypothesis 4 (H4). Course quality has a positive effect on learners’ perceived value.
Sassere et al. observed that service quality includes two parts, the service results and the method of providing services [
45]. Roca et al. held a view that service quality is intimately correlated with confirmation and, thereby, the perceived usefulness of online education [
46]. Wang et al. suggested that service quality influences perceived value and user satisfaction, which also affects learners’ loyalty and continuance intentions [
47]. Consequently, the hypothesis on the relationship between service quality and learners’ perceived value is as follows:
Hypothesis 5 (H5). Service quality has a positive effect on learners’ perceived value.
Interaction implies mutual exchange among human beings or between humans and content that may include knowledge [
47]. Based on this perspective, three types of interactions in the context of online education are proposed: SI interaction, SC interaction, and SS interaction. Interaction in online courses allows students to be participants rather than listeners, which prompts students to increase their perceived value of courses. As a result, the hypotheses on the relationships between the three types of interactions and learners’ perceived value are as follows:
Hypothesis 6 (H6). SI interaction has a positive effect on learners’ perceived value.
Hypothesis 7 (H7). SC interaction has a positive effect on learners’ perceived value.
Hypothesis 8 (H8). SS interaction has a positive effect on learners’ perceived value.
Tam, J.L.M. provides evidence that perceived value is more effective than consumption in stimulating consumers’ purchase intentions and purchase behavior, and it plays a significant mediating role in the model [
20]. Woodruff, Flint, and Gardial state that value can be approached in three different directions: values, desired values, and value judgments. In the online education environment, the category of value judgments implies learners’ perceived value of online courses [
48]. In this case, the higher the perceived value of a product or service is, the stronger the willingness to continue using that product or service is [
49]. Thus, the hypothesis on the relationship between perceived value and learners’ continuance intentions is as follows:
Hypothesis 9 (H9). Perceived value has a positive effect on learners’ continuance intentions.
3.3. Questionnaire Content and Composition of Respondents
The questionnaire, which was designed based on existing questionnaires and literature, comprised 7 constructs and 27 related items. The questionnaire was distributed as an online survey hosted by a professional online survey platform (
https://www.wjx.cn). Data were collected from 399 respondents living in China in April and May 2020, but 17 responses were determined to be invalid because they included doubtful answers or were provided by respondents with no e-learning experience. Thus, survey data from 382 respondents were considered to be valid and utilized in this study. These respondents were all Chinese, came from 32 provinces across the country, and had previous online learning experience. The questionnaire scale was designed using a five-point Likert scale, with the response options from 1 to 5 being “Strongly Disagree”, “Disagree”, “Neutral”, “Agree”, and “Strongly Agree”, indicating the degree of agreement [
50].
Table 1 summarizes the demographic profile of the respondents to the online survey. Specifically, it can be seen that about 62.57% of the respondents were women and around 37.43% men. Most of the respondents were between the ages of 18 and 25. As for occupation, most of the participants were students because they had more free time and a need for online education. It is worth noting that undergraduate students accounted for 68.85% of the respondents and that nearly half of the learners engaged in less than 10 h of online learning per week.
Table 2 summarizes the questionnaire content. As shown in the table, there were 7 constructs that corresponded to 7 variables in the model introduced before. Every construct had several related items, which were framed as questions in the questionnaire. For example, CQ1, 2, 3, 4, and 5 were five related questions of the construct Course Quality. As mentioned above, every question or item had five choices in the questionnaire.
3.4. Data Analyses and Results
Anderson and Garbing have indicated that there can be a rigorous analysis of the measurement model (outer model) and structural model (inner model) when SEM is utilized as the research methodology [
51]. The focus of measurement model analysis is the relationship of the observed to the latent variables. In other words, it seeks to verify reliability, convergent validity, and discriminant validity. Convergent validity, an essential parameter in social science research, indicates the degree to which two measures of constructs that theoretically should be related are in fact related, and reflects the correlation of different indicators for the same construct, whereas discriminant validity refers to the degree to which two conceptually similar concepts are in fact distinct.
To examine the measurement model in this study, we employed Partial Least Squares Structural Equation Modeling (PLS-SEM) to perform confirmatory factor analysis (CFA) to determine the reliability, convergent validity, and discriminant validity of the model [
51]. The reliability of the measurement model was examined utilizing the composite reliability (CR) value. Fornell and other scholars hold the view that convergent validity should be analyzed using average variance extracted (AVE), composite reliability (CR), Cronbach’s alpha (CA), and factor loading values [
52]. The factor loading was higher than 0.7, demonstrating a great model fit.
Table 3 shows that the values of factor loading exceeded the threshold of 0.7. Meanwhile, the values of AVE, CR, and CA should be higher than 0.5, 0.7, and 0.7, respectively [
53,
54]. The result indicates that the AVE ranged from 0.580 to 0.811, the CR was between 0.847 and 0.928, and CA ranged from 0.734 to 0.884. In this case, all these constructs had satisfactory reliability and convergent validity based on criteria cited from Fornell and Larcker [
52].
Discriminant reliability is primarily examined by two methods. The first criterion is that the square root of the AVE value should exceed the values of correlation constructs, which can be manifested in the inter-construct correlations in
Table 4, indicating satisfactory discriminant validity [
55,
56]. The second criterion relates to a comparison between the values of the constructs’ item loading and cross loading of other variables. Cross loading implies how strongly each target item loads on the non-target factors.
Table 5 shows that all of the item loading values were higher than the cross-loading values of potential variables. In this case, the discriminant validity of all the constructs is considered to be significant. It also indicates that each construct in the model was actually distinct and had sufficient discriminant validity. Among all the item loadings in the table, the Course Quality (CQ) values are the highest, which implies that the correlation between the items and construct is the highest.
Regarding the analysis of the structural model in this study, the model’s goodness of fit and overall explanatory power were considered. Goodness-of-fit analysis refers to how well a model fits a set of observations.
Table 6 lists some fit indexes, recommended values, and real results of this study. The fit indexes are as follows: the chi-square statistics minimum discrepancy per degree of freedom (CMIN/DF) is 1.961; goodness-of-fit index (GFI), 0.895; adjusted goodness-of-fit index (AGFI), 0.874; comparative fit index (CFI), 0.938; and root mean squared error approximation (RMSEA), 0.05. They all meet the recommended values for the indexes [
57].