## 3 Methods
### Data Collection Instrument  
The data collection instrument used in this study was designed following the UTAUT2 model, adapted to assess the degree of acceptance of artificial intelligence in the university setting, specifically regarding the use of ChatGPT. The questionnaire was developed based on the constructs of the model, ensuring the theoretical validity of the measurement and its applicability in the educational context. The questionnaire was administered via an online platform (Google Forms), facilitating access to a larger number of participants and ensuring efficient data collection. Before participating, the students provided informed consent, ensuring compliance with the ethical principles of research. The questionnaire consists of 19 items distributed across different dimensions of the UTAUT2 model. * The first dimension, \"Academic Performance Expectancy\" (PE), evaluates students' perceptions of ChatGPT's usefulness in their academic performance. It includes four items exploring the tool's impact on productivity, speed in completing tasks, and its contribution to achieving academic goals. * The second dimension, \"Effort Expectancy\" (EE), measures the perceived ease of use of ChatGPT, considering the clarity of interaction and the ease of learning the tool, with a total of four items. * The third dimension, \"Social Influence\" (SI), consists of three items that investigate the extent to which the opinions and recommendations of close individuals influence students' adoption of ChatGPT. * The fourth dimension, \"Facilitating Conditions\" (FC), gathers information on the availability of resources and necessary knowledge for using artificial intelligence as well as the compatibility of the tool with other technologies used by students. This dimension also includes one item regarding the possibility of receiving external support in case of difficulties with the tool. Finally, the \"Behavioral Intention\" (BI) and \"Usage Behavior\" (UB) dimensions assess students' future willingness to continue using ChatGPT in their studies. The first consists of three items measuring the intention to keep using the tool over time, while the second collects information on the actual frequency of ChatGPT use in the academic context. Table 1 presents the different items that make up the instrument. Regarding the mean scores and standard deviations obtained in each of the dimensions, Table 2 presents a summary of the descriptive statistics for the UTAUT2 model dimensions. \begin{table}
\begin{tabular}{l c c} \hline \hline
**Item** & **Mean** & **SD** \\ \hline PE1 I believe ChatGPT is useful in my studies & 6.11 & 1.346 \\ PE2 Using ChatGPT increases your chances of achieving important & 5.43 & 1.650 \\ things in your studies & & \\ PE3 Using ChatGPT helps you complete tasks and projects faster in & 6.09 & 1.424 \\ your studies & & 5.61 & 1.613 \\ PE4 Learning to use ChatGPT is easy for me & 6.17 & 1.376 \\ EE2 My interaction with ChatGPT is clear and understandable & 6.05 & 1.326 \\ EE3 I find ChatGPT easy to use & 6.31 & 1.221 \\ EE4 It is easy for me to acquire skills in using ChatGPT & 5.97 & 1.454 \\ SI1 The people who are important to me think that I should use ChatGPT & 4.49 & 1.990 \\ SI2 The people who influence my behavior believe that I should & 4.26 & 2.065 \\ use ChatGPT & 4.23 & 2.087 \\ SI3 The people whose opinions I value prefer that I use ChatGPT & 4.23 & 2.087 \\ FC1 I have the necessary resources to use ChatGPT & 6.54 & 1.068 \\ FC2 I have the necessary knowledge to use ChatGPT & 6.14 & 1.394 \\ FC3 ChatGPT is compatible with the technologies I use & 6.47 & 1.161 \\ FC4 I can get help from others when I have difficulties using ChatGPT & 5.69 & 1.742 \\ BI1 I intend to continue using ChatGPT in the future & 6.06 & 1.491 \\ BI2 I will always try to use ChatGPT in my studies & 4.87 & 2.010 \\ BI3 I plan to keep using ChatGPT frequently & 5.30 & 1.862 \\ UB1 Choose your frequency of use for ChatGPT & 4.46 & 1.688 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Items of the measurement instrument.