I think that "Notably though" sufficeth in making your point, to the extent that:

• I consider it unlikely that any intended reader would miss your point.

• I doubt that few, if any, would think its use inappropriate in the context or even feel that the term "stands" out as they read the text.

You could consider introducing an element of "... in my opinion ..." but, as your text is probably seen as an opinion in the context, "facts" stated are probably already seen as opinions.

Perhaps something like:

"In my opinion, X’s perception of himself as a learner is closely linked to his literacy abilities, and so I'd consider it [very] likely that these two areas will improve reciprocally."

I think that "Notably though" sufficeth in making your point, to the extent that:

• I consider it unlikely that any intended reader would miss your point.

• I doubt that few, if any, would think its use inappropriate in the context or even feel that the term "stands" out as they read the text.

You could consider introducing an element of "... in my opinion ..." but, as your text is probably seen as an opinion in the context, "facts" stated are probably already seen as opinions.

Perhaps something like:

"In my opinion, X’s perception of himself as a learner is closely linked to his literacy abilities, and so I'd consider it [very] likely that these two areas will improve reciprocally."

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Peripheral: While "reciprocally" carries your meaning well enough, I feel it is not the best term in this context. Reciprocal here conveys an impression of both aspects asymptoting to some common level - which may not necessarily be a high one. While readers are liable to infer your meaning as "improve in an interactively supportive way to some much better level", that's not actually what the term means.

Better, perhaps, may be "mutually" or "interactively" (less good) or ...

I think that "Notably though" sufficeth in making your point, to the extent that:

• I consider it unlikely that any intended reader would miss your point.
• I doubt that few, if any, would think its use inappropraite in the context or even feel that the term "stands" out as they read the text.

You could consider introducing an element of "... in my opinion ..." but, as your text is probably seen as an opinion in the context, "facts" stated are probably already seen as opinions.

Perhaps something like:

• "In my opinion, X’s perception of himself as a learner is closely linked to his literacy abilities, and so I'd consider it [very] likely that these two areas will improve reciprocally."

I think that "Notably though" sufficeth in making your point, to the extent that:

• I consider it unlikely that any intended reader would miss your point.

• I doubt that few, if any, would think its use inappropriate in the context or even feel that the term "stands" out as they read the text.

You could consider introducing an element of "... in my opinion ..." but, as your text is probably seen as an opinion in the context, "facts" stated are probably already seen as opinions.

Perhaps something like:

"In my opinion, X’s perception of himself as a learner is closely linked to his literacy abilities, and so I'd consider it [very] likely that these two areas will improve reciprocally."