534
S. da Silva Neiva et al.
Fig. 9 Average of annual occurrence of term “environmental sustainability”, with reference to
“social sciences”, “social responsibility” and “environmental studies”
Fig. 10 Average of annual occurrence of term “environmental management” and the lesser terms
of “learning outcomes”, “service learning” and “teacher education
in HEIs. It can be seen that no use of the term “learning outcomes” was made in
the IJSHE up until 2008 when it appeared for the first time as a peak after which it
fluctuated but increased in use nearly 40 times per article. Again possible event leads
and lags can be identified in the data and used to determine what the linkages there
are between them.
Finally, an important consideration is that many more terms do not show high and
consistent levels of relevance in IJSHE articles, such as “interdisciplinary research”,
“problem based learning”, “socio economic”, “transformative learning”, “green
buildings” (see Appendix) despite being relevant in the context of all terms, and
being very relevant to this research. In this sense, it is also important to highlight
that research paths and themes inside universities are heavily influenced by what