Watch the String Transference online guitar lesson by TrueFire from Play Acoustic Guitar 5: Fingerstyle Principles
String Transference - Concept 3 is a video guitar lesson presented by Brooks Robertson and is sourced from Fingerstyle Survival Guide.
From Ted Greene's book "Modern Chord Progressions" this is a great technique that allows you to play the same chord voicing either on the next higher or lower group of strings. Not only is this helpful for memorizing multiple ways to play the same chord voicing, it also allows you to move across the fretboard and avoid running out of room when looking for a specific chord voicing at a particular pitch. This technique is also helpful when searching for how to play the same voicing and octave higher or lower. Try using this concept with a few different qualities of chords from the movable forms we looked at.
In Ted Greene's book Modern Chord Progressions here is how the concept of string transference is explained,
"1. To find the same chord voicing on the next higher group of strings, move all the notes in the chord over to the next higher group of strings; retain the same visual shape unless any note has landed on the 2nd string, in which case you move the note up one fret; now move the whole chord down five frets (or up seven if you want to hear the same chord an octave higher).
2. To find the same chord voicing on the next lower group of strings, move all the notes in the chord over to the next lower group of strings; retain the same visual picture unless any note has landed on the 3rd string, in which case you move this note down one fret; now move the whole chord up five frets (or down seven if you want to hear the same chord an octave lower)."