View attachment 2726 I think the Dominant function leans on both of the peripheral functions. In the case of INFJs, that's Ni, so it leans on both Ne and Si. However, each individual will lean on one more than the other. However, the Secondary and Tertiary functions both lean on ONE of the remaining peripheral functions. For INFJs, this is Fe and Ti, which must lean on either Te or Fi. Lastly, the final remaining peripheral function is treated as a 'Daemon' function, which is very difficult for the user to use and develop. The example above explains my set, but INFJs could develop other sets, which would explain a lot of our differences. For example, the exact opposite of my set would be Ni leaning on Si with Ne as back up, Fe and Ti leaning on Te, and Fi left to be a problem for the user to use and develop.