## 3 Method
### Description of the Questionnaire  
The development of the questionnaire used in the present study followed an initial screening of the items included in similar TAM validations. After further analysis on their relevance and pertinence, 36 items were retained and adapted in wording to fit the context of the FARMER 4.0.  
The questionnaire was structured in four sections. In the first section, a general description of the purpose of the study together with a mini-guide on the system usage was given. Respondents were also provided with the link to access FARMER 4.0 website and were asked to explore it. Within the second section, we asked participants for their consent for personal data processing in line with data protection regulations. The third section included demographic questions about age, gender, education level, computer use frequency, and previous experience in e-learning systems and farming activities. Finally, the fourth section included 36 items aiming to assess BI (3 items), ATT (3 items), PU (3 items), PEOU (3 items), ANX (3 items), CQ (3 items), EXP (3 items), FC (3 items), II (3 items), PE (3 items), SE (3 items), and SN (3 items). Each item was measured using a seven-point Likert Scale, being 1 = strongly disagree; 2 = moderately disagree; 3 = somewhat disagree; 4 = neutral; 5 = somewhat agree; 6 = moderately agree, and 7 = strongly agree. Items are listed in the Appendix A.  
\begin{table}
\begin{tabular}{l l} \hline \hline
**Hypothesis** & **Definition** \\ \hline H1 & **(H1a).**_Content quality will have a positive influence on PU_ \\  & **(H1b).**_Content quality will have a positive influence on PEOU_ \\ H2 & **(H2a).**_Experience will have a positive influence on PU_ \\  & **(H2b).**_Experience will have a positive influence on PEOU_ \\ H3 & **(H3a).**_Exfacilities conditions will have a positive influence on PU_ \\  & **(H3b).**_Exfacilities conditions will have a positive influence on PEOU_ \\ H4 & **(H4a).**_Individual innovations will have a positive influence on PU_ \\  & **(H4b).**_Individual innovations will have a positive influence on PEOU_ \\ H5 & **(H5a).**_Perceived enjoyment will have a positive influence on PU_ \\  & **(H5b).**_Perceived enjoyment will have a positive influence on PEOU_ \\ H6 & **(H6a).**_Self-efficacy will have a positive influence on PU_ \\  & **(H6b).**_Self-efficacy will have a positive influence on PEOU_ \\ H7 & **(H7a).**_Social norm will have a positive influence on PU_ \\  & **(H7b).**_Social norm will have a positive influence on PEOU_ \\  & **(H8a).**_Arxiv will have a negative influence on PU_ \\  & **(H8b).**_Arxiv will have a negative influence on PEOU_ \\ H9 & **(H9a).**_Perceived Usefulness (PU) will have a positive influence on attitude towards using (ATT)_ \\  & **(H9b).**_Perceived Base of Use (PEOU) will have a positive influence on attitude towards using (ATT)_ \\ H10 & _Perceived Base of Use (PEOU) will have a positive influence on PU_ \\ H11 & _Attitude towards using (ATT) will have a positive influence on the Behavioral Intention to Use the_ \\  & _e-learning tool FARMER 4.0_ \\ \hline \hline \end{tabular}
\end{table}
Table 2: Research hypothesis.  
The items selected for the present research were applied in previous TAM studies showing an adequate validity and reliability for the contexts of application. Items initially in English were translated into Italian. The adequacy of the translation was verified by Italian researchers. The analyzed variables and the source from which items were adopted are listed in Table 3.