in a way that relates to the method used for doing, teaching, or studying something: a study that was methodologically sound/unsound. They dismiss his study as methodologically flawed.

What does methodologically sound mean?

When the methods within a research proposal are able to answer the study question, the research proposal is deemed “methodologically sound.” Methodological soundness is an indicator of quality. ... In short, and generally, speaking, methodological soundness refers to an indicator of quality in research.

What are thematic words?

(of a word or words) of, relating to, or producing a theme or themes. (of a vowel) pertaining to the theme or stem: the thematic vowel ends the stem and precedes the inflectional ending of a word form, as i in Latin audiō “I hear.”