Libby interviews Sally Cat about this lesser-known type of PDA. Many of us are confident we know what PDA looks like but what if we are missing a huge group of people who don't show overt signs of PDA? Read more here http://www.sallycatpda.co.uk/2024/10/a-quick-guide-to-internalised-pda.html Sally Cat's blog is full of information that you might not have come across before including her Big  Traits study http://www.sallycatpda.co.uk/2019/06/a-demonstration-of-differences-between.html