I, of course, say YES. But, also, there is a question of when (where/how, as well) that a containing system needs to be discovered. In the case of the more intangible psychology (like much of psychology, for example: learning with great changes and great variability): I say the "containing" system is important to have NEAR the start of one's studies (e.g. of cognitive development and changes in learning and changes from [somethings called] 'learning' (more likely best thought of as systems of learnings, plural)). This is thus the perspective and approach I have put forward *.
[ YET NOTE: the "outer" system MUST BE OF A BIOLOGICAL NATURE -- but, by this, I do NOT mean isomorphic or exactly like any other biological system, BUT in conforming to necessarily applicable principles. ]
For my perspective and approach and details of the now-testable hypotheses, see: especially:
https://www.researchgate.net/publication/286920820_A_Human_Ethogram_Its_Scientific_Acceptability_and_Importance_now_NEW_because_new_technology_allows_investigation_of_the_hypotheses_an_early_MUST_READ
and
https://www.researchgate.net/publication/322818578_NOW_the_nearly_complete_collection_of_essays_RIGHT_HERE_BUT_STILL_ALSO_SEE_THE_Comments_1_for_a_copy_of_some_important_more_recent_posts_not_in_the_Collection_include_reading_the_2_Replies_to_the_Comm
(now, also, with a collection of more recent essays, attached)
* FOOTNOTE: If you are not doing this kind of "thing", then what are you doing??