Local association measures

#1
Hi everyone,
I have read that there are local measures of association to be used when wanting to conduct a finer-grain analysis of an X-Y association (Grissom and Kim, pages 101-102). However, this comment is framed in the context of two continuous variables and I wondered whether these local measures of association might be applied in the context of one continuous and one dichotomous variable (point-biserial correlations). I tried to check for the references cited in Grissom and Kim's book (e.g. https://www.duo.uio.no/bitstream/handle/10852/47756/1991-1.pdf?sequence=1; https://core.ac.uk/download/pdf/30819854.pdf) but they are too technical for me... Could anyone provide an answer to this question?

Thanks in advance for any help :)