From Douglas Niedt's subscribers page
"One of my students recently returned from the excellent master class (part of the Bowdoin International Music Festival) given annually by Ricardo Iznaola in Bowdoin, Maine. Ricardo encouraged my student to make more use of the anchor-finger technique. It's a technique I began using unconsciously many years ago. But, no one ever mentioned it. It was never written about in books or magazines. Teachers never brought it up. Since I never heard anyone talk about it, I thought maybe it was a crutch, and I shouldn't use it. Finally, I heard Christopher Parkening remark in a master class that he used the technique. So, I finally felt vindicated. Since then, I've heard it mentioned a few times, but it seems to receive little discussion.
The anchor finger technique may be defined as placing a right-hand finger (usually the "a" finger, but sometimes the pinky or "m") on a string while playing other strings. Setting the right-hand thumb on the guitar or on a string while playing other strings with the fingers, is a more well-known use of the anchor technique. I will describe it later.
Be sure to place the anchor finger in ready-to-play position—string in contact with flesh and left side of fingernail. This is important, because many times, the anchored finger will eventually pluck the string on which it is set.
The use of anchor fingers differs from the planting technique in that the anchor finger might not play the string on which it is anchored. Or, if it does play the string, it happens sporadically, not in a pattern. Planting on the other hand, is done with the express purpose to have the finger on the string as preparation to pluck the string. It is usually used as part of a pattern of execution such as, most commonly, an arpeggio.
The Benefits of Using Anchor Fingers
Anchor fingers lend stability to the right hand, resulting in security and confidence. In situations such as public performance, the hand may shake from nervousness. The use of anchor fingers helps keep the hand steady, greatly increasing accuracy and confidence, thereby lessening performance anxiety.
At the same time they provide benefits such as stability and speed, anchors provide ancillary benefits such as string damping to clarify melodic lines or eliminate unwanted dissonances.
Increased right-hand stability often translates into increased left-hand accuracy.
The anchor finger serves as a spatial reference point, resulting in more accurate playing by the other right-hand fingers.
Enhanced touch for better control of dynamics.
Control of tone color changes.
Improved tone quality.
Provide stability for the execution of descending slurs ("pull-offs").
Provide stability for the execution of ornaments.
Provide spatial reference points and stability for execution of harmonics.
Provide accuracy, security, and improved tone quality for strums with the thumb.
Provides stability for melodic passages executed by the thumb."
Anyone on here use this technique