) Web of Science. Source: Authors.
As shown in Figure 2b, the data from the Web of Science reveals that the United States has the most research publications on PBL, with 178 documents and 6277 citations. China follows this with 124 papers and 1491 citations, and Canada with 54 records and 1093 citations. Australia, Denmark, and England also have many publications on this topic, with 63, 55, and 55 documents, respectively.
The Netherlands has fewer publications, with 47 papers, but has many citations, with 2869. Germany and Sweden have lower numbers of publications, with 18 and 23 documents, respectively, but still have a significant number of sources, with 283 and 440, respectively. Qatar has minor publications and citations, with only 16 documents and 71 medals.
The data from both databases indicate that PBL is a popular research topic in the United States, China, Canada, Australia, and Europe. The United States has the highest number of publications and citations in both databases, indicating its leading position in PBL research. Australia has an increased number of publications, but a relatively low number of sources, meaning their study may not be as impactful as those from the United States or Europe. China also has many publications, but its citations are lower than the United States and European countries.
Moreover, the data from Scopus reveals that Spain is a significant player in PBL research, with many publications and citations
[39][40][39,40]. Indonesia also has many journals and sources, indicating that it is an emerging country in PBL research
[41][42][41,42]. On the other hand, countries such as Brazil, Norway, Hong Kong, and Sweden have a small number of publications and citations, indicating their relatively minor role in PBL research.
The United States is the dominant country in PBL research, with the most publications and citations in both databases. Australia has an increased number of publications but a relatively low number of sources. In contrast, China has many magazines, but its citations are lower than in the United States and European countries. Europe, particularly Spain and Portugal, is significant in PBL research.
About Table 1, The list of universities researching the PBL is quite diverse, with some universities leading regarding the number of documents published and citations received. The University of California, Berkeley, and Stanford University stands out with 5 and 7 papers published and 1518 and 1454 citations, respectively. It indicates a high level of research activity and the impact of their research on the academic community.
Table 1.
Most influential Universities Searching PBL Strategies.
Table 2 presents the most relevant studies on the subject, which justifies the relevance of this research supported by authors whose works are related to peer instruction and PBL, which were investigated through scientific literature from various databases. The pieces were analyzed based on three critical aspects: problem, constraint, and proposal. The authors aimed to contrast the results obtained from each type of instruction based on the proposed aspects.
Table 2.
Summary of works related to Peer Instruction and Learning Engineering.
Other notable universities include Michigan University, with 11 documents published and 574 citations; the Technion Israel Institute of Technology, with 12 papers published and 363 citations; and the National Taiwan University of Science, with 10 published and 350 sources. These universities have a significant research output and actively contribute to advancing knowledge in the PBL field.
It is interesting to note that some universities with fewer documents published, such as Hong Kong University, with 14 papers published and 316 citations, have a similar or even more significant impact than other universities with more documents. The quality of research, rather than the quantity, plays a crucial role in the effects of research in the PBL field.
Additionally, it is essential to highlight that universities from different regions are researching PBL. For instance, universities from Spain, Indonesia, and Qatar are represented in the list. It indicates that the PBL approach is gaining popularity and recognition globally.
However, some universities in the list have a low number of documents published and citations, such as Universitas Negeri Malang, with only 3 and 12 sources, and National Taiwan University of Science and Technology, with four papers published and eight citations. It suggests that these universities have a lower research output and impact in the PBL field.
The analysis of the most influential universities researching PBL strategies is relevant to the study project because this study aims to improve reading and comprehension skills in the English language through PBL methodology. The universities named demonstrate a high level of research activity and impact on the academic community, indicating that PBL is a well-studied and practical approach. Additionally, the global representation of universities researching PBL highlights its growing popularity and recognition, emphasizing the need to explore its potential for further advancements in diverse educational contexts.
Of the ten works, eight identified the problem of traditional teaching methods, characterized by teachers’ need for more motivation and interest in reading to develop students’ soft skills. In contrast, PBL was proposed as a solution to address this problem. Additionally, the works identified various constraints, such as limited appropriate reading materials, commitment and accessibility to reading materials, and training on reading strategies, which may affect the implementation of PBL methodology.
The proposals presented in the works as solutions included training on PBL. Some results suggested that learning strategies should be adopted to ensure the success of PBL. Other works suggested implementing a motivation for project-based practices and student participation.