## Appendix D  
In this Appendix D are listed the questionnaires, scales items, links to interviews (with related results, when available) about metaverse; they also contain the topics that are close to Q ([44; 45; 46; 47; 48]), found in works selected from S1 and S2. The specific items assessed as close to Q have been selected (shown in _Underlined Italic Style_) and labeled with a letter (\"A -\", \"B -\" and so on). The selected items have been classified as \"In favor\" or \"Not in Favor\" (of metaverse) according to the percentages of answers. The results of this selection process are summarized in Figure 9.  
The following is the questionnaire about metaverse in [45] (found in S1). It includes questions both in closed-form and in open-form. The following are the questions in closed-form (Yes, No, Not Sure):  
* Have you heard about the metaverse? (79.5% = Yes);
* Would you consider the metaverse to be the next evolution of the internet? (58.6% = Yes, 16.4% = No, 25% = Not Sure);
* Do you believe that the metaverse can reshape the future? (70.9% = Yes, 8.2% = No, 20.9% = Not Sure);
* Would you consider the metaverse the next frontier for online interaction? (75% = Yes);
* Would you agree that the metaverse will revolutionize online marketing in the same way that social media did? (results not shown);
* A--_Have you been impacted by the internet, Would you say that the metaverse will affect you_? (29.1% = Yes, 25.5% = No, 45.5% = Not Sure) In favor = 29% Not in favor = 71%;
* B--Does the metaverse also free us from many of the limitations of the physical world? (54% = Yes) In favor = 54% Not in favor = 46%;
* What is your opinion of the effect of metaverse on the economy? Are there opportunities for the economy to grow in the metaverse? (66.8% = Yes);
* Would you agree that the metaverse has tremendous potential to transform and improve fields (like health care, education, entertainment, and so on)? (78.6% = Yes) (this is question mentioned in the paper but, in the questionnaire, it is different);
* C--_Can Metaverse be a world where the digital world is more valuable and valuable than the physical world?_ (28.6% = Yes, 37.7% = No, 33.6% = Not Sure) In favor = 28.6% Not in favor = 71.4%;
* Are you concerned that we may lose our connection to the real world with the metaverse? (63.2% = Yes, 20.5% = No, 16.3% = Not Sure);
* D--_Do you think you're ready for the metaverse?_ (37.7% = Yes, 17.3% = No, 45.0% = Not Sure) In favor = 37.7% Not in favor = 62.3%;
* The metaverse is expected to fundamentally alter digital communication (75% = Yes, 8% = No, 16% = Not Sure) (question mentioned in the paper but not included in the questionnaire). The following are the questions in opened-form:  
* In your own words, how would you describe the metaverse? * How far away do you think the metaverse is? * In your opinion, who will benefit from using metaverse? (the majority of respondent = entertainment industry)
* Is there anything you would like to see in the metaverse? The following are the subscales about Self-Efficiency and Intention to Participate, in [45] (found in S1). The subscales are aimed to validate the psychological constructs developed in the work. The responses are not shown in the original paper. The following are the items of the subscale for Self-Efficiency of participating in the Facebook metaverse:
* Participating in the metaverse advertised by Facebook is a task I can perform;
* I have the necessary technological skills to participate in the metaverse advertised by Facebook;
* I have sufficient technological skills to participate in the metaverse advertised by Facebook;
* I will be able to combine my daily activities with my participation in the Facebook Metaverse.