Farbeit for me to say given my own rating, but younger people tend to suffer from extreme tunnel vision. In fact, scratch that; everyone tends to suffer from extreme tunnel vision sometimes!
I've been trying to break this in myself for quite some time. What I've been doing is (in some turn-based games) noting and analyzing the positions of literally every piece with every move. I suppose some might say I should do this anyway, but heh.. I don't. I try to rely on my memory's eye, I suppose you may say (not exactly 20/20).
Anyway, I'm getting side-tracked. Naturally I don't do this in live chess, but hey, I at least find it to be good practice in "slow" chess. That being said, I'm boring and weird and honestly not very good! I'm not sure how well kids would take to the whole "Let's analyze every single arbitrary piece every single move; it'll be fun!" approach. I can say that it's helped me, though!
Some of my students are young kids and are very low-rated - maybe 6-10 years old, and in the 100-400 rating range USCF. I've had some difficulties in coaching them, and am posting this to try to become a better coach.
Some of them have had over a dozen lessons with me, but it's always the same thing - I keep explaining to them how they have to slow down, and I keep explaining to them how they have to not hang all their pieces.
I explain to them what a hanging piece is, what a fork is, etc - I give them example after example of this from our training games, and all of them seem to understand what they did wrong each time, but they make similar mistakes again and again - just playing too fast, overlooking very basic tactics, and ultimately hanging all their pieces. Lesson after lesson, tournament after tournament.
Could it be that they're just too young to understand what I'm telling them? It can't be, right? After all, there are 8 year old experts and masters! And the kids I'm teaching generally have above-average intelligence.
I can teach them to play the opening well (not hard, with opening principles), and I teach them the bare basics of positional play - what a backwards pawn is, for instance - but I feel like it's pointless to go much deeper into anything else until they stop hanging everything. This leads to lesson after lesson about the same thing.
Does anyone know of techniques that are used to help these kids break through and become class E players? I'd be interested in what others have tried - something's gotta work, or there wouldn't be so many high-rated youngsters!