Introduction Customer co-creation – customers‘ active participation and interaction with the company during their consumption processes, has gained increasing attention in tourism industry (Bertella, 2014; Chathoth et al., 2016; Campos, 2015). For example, Finnair and Helsinki airport invited passengers to workshop for co-developing new service concepts to improve passenger experience (Loukas, 2013). Despite of the increasing enthusiasm at the firm‘s side, customers do not necessarily share the mindset and feel ready for cocreation. The success of value co-creation greatly depends on continuous collaboration between customers and companies (Chathoth et al., 2013), making knowledge regarding customers‘ engagement in value co-creation essential. However, insufficient research attention has been devoted to theorize and empirically investigate the drivers of cocreation behavior in tourism (Grissemann & Stokburger-Sauer, 2012). To address this research gap, we draw on the organizational socialization theory (Van Maanen & Schein, 1979) to propose and empirically test customer education as driving factor for tourists‘ co-creation behavior during their tours. Additionally, we propose customer readiness as a mechanism mediating the effect of customer education on value co-creation behavior, while such effect should depend on tourists‘ involvement with tourism. Background and hypotheses development Organizational socialization refers to the process by which a newcomer gradually absorbs values, abilities, expected behaviors, and necessary social knowledge for assuming an organizational role and for participating as an organizational member (Louis, 1980, p. 229–230). Similar to the organizational socialization perspective, customer socialization characterizes how customers develop skills, knowledge, and attitude relevant to the marketplace (Ward, 1975), which offers a lens to explain how service providers can assist customers and behave as effective co-creators in the service system (Claycomb, Lengnick-Hall, and Inks, 2001). Büttgen et al (2012) demonstrated that customer socialization by training tactic has more important influence on consistent beliefs of service quality than prior reinforcement experiences, which engenders co-production motivation, in turn, leading to coproduction behavior as distal outcome of the socialization tactic. Previous studies suggest favorable customer outcomes to derive from the provision of customer education (Damali et al., 2016). Thus, this study proposed customer education as a socializing tactic, which is mediated by customer readiness for co-creation, to determine tourists co-creation behavior. The concept of co-creation has gained increasing attention in tourism literature, which is often described as the tourist‘s active participation, engagement and interaction during the consumption experience (e.g., Bertella, 2014; So et al., 2014). As Prahalad and Ramaswamy (2004, p. 8) stated, cocreation is ―the joint creation of value by the company and the customer, allowing the customer to co-construct the service experience to suit her context‖. Indeed, creating a favorable, memorable experience involves not only the service providers but also the tourism customers because customers are always the value co-creator (Vargo and Lusch, 2004). Challagalla and colleagues (2009) posit that firms can reach out to contact the customers to provide service after a sale is complete, rather than respond upon the customer‘s requests. In specific, Challagalla and et al. (2009) suggest the proactive service initiatives to consist of three dimensions, namely proactive prevention, proactive education, and proactive feedback seeking. In this study, the three key forms of proactive post-sales services proposed by Challagalla et al. (2009) provides a foundation that helps us to conceive customer co-creation behavior and define the dimensions underlying customer co-creation behavior of tourism services. Customer education, according to Meer (1984), involves learning activities that are organized and sustained by a firm to impart attitudes, knowledge or skills to customers or potential customers. Meanwhile, customer co-creation readiness (CCR) as a customer‘s condition or state in which he/she feels prepared to collaborate with service provider in value co-creation behavior, indicated by role clarity, ability and motivation to co-create (Meuter et al., 2005). Proper socialization process helps customers understand the product or service process as well as their role in performing service tasks, which not only could prevent customer‘s disruptive behaviors during the service process but also facilitate service flow and productivity (Rollag, 2012). Taken together, we propose the following hypotheses: H1: customer education will have a positive effect on customer co-creation behavior H2: Customer co-creation readiness will mediate the positive effect of customer education on customer co-creation behavior. Further, we postulate that tourist‘s product involvement is a boundary condition that constrains the positive effect of customer socialization. Socialization process does not always have much weight on tourists because the influence of socialization on each individual depends on tourists‘ individual characteristics (Van Maanen & Schein, 1979). Some tourists are highly interested in traveling whereas some consider traveling as a dessert in their meal. In line of this sense, we suggest the following hypothesis: H3: Product involvement will negatively moderate the mediation effect of customer co-creation readiness on co-creation behavior. Methodology The survey was posted on several well-known travel forums and referral networks. After eliminating invalid surveys, the authors obtain 300 valid questionnaires. Table 1 presents the sample characteristics. Customer education are measured by four items adapted from Bell and Eisingerich (2007). Product involvement depicts a customer‘s inherent needs, values, and interest towards tourism and is measured by ten items from Zaichkowsky (1985, 1994). Customer co-creation readiness is measured as a reflective first-order and reflective second-order construct by three dimensions: role clarity, ability, and motivation with 12 items adapted by Dellande et al. (2004) and Meuter et al. (2005). Customer co-creation behavior is measured as a reflective second order and reflective first order construct constituted by three dimensions of co-creation behavior with 12 items developed based on the review of concerns in the pre-site, on-site and post-site from several famous travel agencies. Results Measurement validation of constructs from construct reliability, convergent validity to discriminant validity were examined; and the results are provided in the table 2, indicating measurement validation requirements are satisfactory. Then, hypotheses testing was performed. In each analysis, we control variables, including customer gender, previous transaction experience with the travel agency (EP), and social desirability (SD), which are expected to have potential influence on co-creation behavior. H1 predicts a positive relationship between customer education and value co-creation. In support of H1, the analysis shows that customer education positively relates to co-creation of customers (β = 0.272, p = 0.043, R2adjusted= 0.292). Gender (β =-0.170, p<0.001) and SD (β =0.141, p=0.011) are negatively and positively related to customer co-creation behavior respectively. To test the mediating effect of customer readiness on the relationship between customer education and customer co-creation behavior, we used the PROCESS Macro (model 4) developed by Hayes‘s (2013) and estimated the effects with a bootstrap sample of 5000 cases. The indirect effect test indicates that customer education had a significantly positive effect on customer co-creation via the mediation of customer readiness for co-creation (0.312; 95% bootstrap CI [0.157, 0.517]) because the confidence interval did not include zero. The results support H2. Gender also has a significant effect on customer co-creation (β =-0.189, p <0.05). H3 postulated that product involvement will moderate the mediation effect of customer readiness. We used the PROCESS macro model 8 established by Hayes (2013) to test the moderated mediation. The conditional indirect effect test shows that customer readiness significantly mediates the influence of customer education on customer co-creation behavior, regardless of the level of product involvement (zero was not included in the confidence intervals). Nonetheless, customer education on customer co-creation behavior via customer readiness is significant and stronger in low level of product involvement (0.281; 95% bootstrap CI [0.186, 0.398]) but weaker in high level of product involvement (0.128; 95% bootstrap CI [0.029, 0.256]). Therefore, H3 is supported. Among the controlled variables, gender is the only significant predictor of customer co-creation behavior (β =-0.158, p<0.05). In a summary of dominant results of control variables, gender is significant in all three of the tested hypotheses; particularly, female shows a higher level of co-creation behavior than male. Conclusion we introduced organizational socialization theory to the literature on co-creation of tourism context and explored the effect of firms‘ education effort to socialize customers in co-creation activities. We found customer education as a socialization tactic and then conducting an empirical study by collecting data from several travel agencies to investigate the effect of firms‘ socialization tactic on customer co-creation. The results suggest that customer education could promote customer co-creation through customer readiness as a mediator. We also investigated whether the effect of socialization tactic differs on the different levels of product involvement. The results show that customers with high involvement were less influenced by customer education than those with low involvement.