@vel: Very interesting stuff – a big thanks to you for all the links, I've learned a lot!
It’s important to note though, that according to your sources, Activation partners are only likely to have a good friendship not a romantic relationship! The OP’s question was if INFP’s and ISTJ’s are a great match and this typically isn’t the case from what I’ve observed, experienced and read - including the information you provided.
‚Relations of Activity’ are rated 2 out of 4 stars by Socionics. Our ideal partner seems to be the ESTP (duality – 4 stars) followed by the INFP (identical – 3 stars).
Excerpts from the Wikisocion article about Activation:
-Activation is a very common relationship for
friendship.
-
lead separate lives and make decisions based on criteria that don't seem too important to the other.
-
approaches to achieving their goals tend to be fundamentally incompatible, due largely to the difference in rationality and irrationality.
-they tend to view each other as
separate entities with separate lifestyles and plans.
I quote Sergej Ganin, owner of Socionics:
-with continuous interaction over a long period comes overactivation which normally results in an overall tiredness of each other.
-when it comes to fulfilling everyday duties and matters together,
partners usually meet with many problems.
-
cannot predict each others behaviour and actions in what seem to be ordinary situations. Because of this,
partners cannot rely or count on each other in full.
-one partner is always Perceiving and the other is always Judging, meaning that
they live in different life rhythms.
-These relations are excellent for leisure, but
not for day to day activities.