Introductory phrases
Previous studies mostly defined X as …
Historically, the term ‘X’ has been used to describe …
It is necessary here to clarify exactly what is meant by ...
The definition of X has been a matter of ongoing discussion among …
This shows a need to be explicit about exactly what is meant by the word X.
Widely varying definitions of these terms have emerged (Smith and Jones, 1999).
The definitions of these Xs vary in the literature and there is terminological confusion.
X is a term frequently used in the literature, but to date there is no consensus about ...
Since the definition of X varies among researchers, it is important to clarify how the term is used in
this thesis.
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