A lot of martial arts training is focused on practicing techniques in isolation and developing "perfect" form (punches/kicks in the air, doing the same throw repeatedly against a cooperative partner). The problem is that any technique you want to apply against an opponent in a competition (or self-defense situation) also has a significant tactical/decision-making component, which is not really trained by that approach. You have to learn when to do a technique, how to set it up, and how to adapt the movement to your specific opponent. You can learn the tactical skills in sparring but it's difficult because there's so much going on.
So when you try to jump from isolated technique practice to sparring, there's a disconnect because you haven't built the tactical skills. Even worse, the movement you practiced in isolation may be different from what works in sparring, so all that isolated practice can actually be counterproductive. You can see this pretty clearly in combat sports like kendo and fencing which have a strong component of tradition -- the movements of high-level competitors tend to be very different from the "correct" form taught in class.
I'm not sure how much this would apply to aikido, which as I understand it is not particularly focused on competitive or self-defense applications.
If you're interested in pedagogy for martial arts (or sports in general), I highly recommend "Development of Technique and Tactical Skill" by Luis Preto and Spyridon Katisgiannis.
"Principles-Based Instruction for Self Defense" by Rory Miller is also pretty good, if a bit rambling.
So when you try to jump from isolated technique practice to sparring, there's a disconnect because you haven't built the tactical skills. Even worse, the movement you practiced in isolation may be different from what works in sparring, so all that isolated practice can actually be counterproductive. You can see this pretty clearly in combat sports like kendo and fencing which have a strong component of tradition -- the movements of high-level competitors tend to be very different from the "correct" form taught in class.
I'm not sure how much this would apply to aikido, which as I understand it is not particularly focused on competitive or self-defense applications.
If you're interested in pedagogy for martial arts (or sports in general), I highly recommend "Development of Technique and Tactical Skill" by Luis Preto and Spyridon Katisgiannis.
"Principles-Based Instruction for Self Defense" by Rory Miller is also pretty good, if a bit rambling.