EROMOSELE, George OsasAMBALI, Zainab OlanihunABDULRAZAQ, Olarewaju MutalibABDULRAHEEM, Opeyemi NajeebatABDULLAHI, Maito Rasaq2024-05-042024-05-042023E-books, Usage, Perceived usefulness, and Postgraduate Students.https://uilspace.unilorin.edu.ng/handle/123456789/13634This examined the perceived usefulness as a determinant of e-book usage by postgraduate students in universities in South West, Nigeria. The descriptive survey design was adopted using a questionnaire, as an instrument for data collection from postgraduate students across three universities in South-West Nigeria. A content-related approach of validation was conducted to ensure the validity of the instrument while Cronbach alpha was used to test the reliability of the instrument which returned an r = 0.864. The population of the study comprised postgraduate students from the University of Ibadan (11,825), Ekiti State University (1,620), and Bowen University (55) respectively. The simple random sampling technique was adopted in selecting the three universities. Israel's(2009) sample size Model was used to arrive at three hundred and Ninety (390) respondents which represents the sample for the study. The findings from the study demonstrated that postgraduate students have a positive perception of the usefulness of e-books as they enhance academic performance effectiveness. The findings further revealed that postgraduate students can accomplish tasks very quickly, and provide up-to-date information resources. The study recommended that; university management should ensure that they subscribed to the appropriate online academic databases e.g., Ebscohost, ProQuest and ScienceDirect etc., to have access to up-to-date e-books and e-resources as a whole for the postgraduate students to have access to adequate information resources. Postgraduate students should embrace the use of electronic books for academic purposes such as using them to complement printed books, checking for the research topic and updating research work, preparing academic course work or reading, passing away leisure time (Novels and like), searching for academic information resources and many more.enArticle