Defect imo is poor board vision. Not sure about the cure. Probably something similar to the Chess Steps program + playing slow games (don't even try blitz).
And focus on simple threats to reduce blunders. Forget about strategic niceties and al. The lead in thought process should be similar to : what is the threat ? What is undert attack ? What is undefended ?
Can you design a training program that will cure defects in the play of perpetual beginners. We all know of people who love chess, play often, perhaps even study, and are reasonably intelligent adults, and yet their play remains rubbish. Although they may have been playing for years, or even decades, the level of their play remains what you would expect from an eight year old who recently learned how to play. In fact, they are maybe a little worse than that because these eight year old children beat them at tournaments.
For example, we all know that popular YouTuber KS, whose hubris leads him to call himself the backyard professor, is a terrible chess player. He reads book after book, and then promotes those books on his channel. But, his USCF rating is still well below 800. He spends many hours studying chess, but fails to rise into the ranks of average.
What are the defects of such players? What is the cure?
Can you design a training program that would be guaranteed to cure BYP’s (or another similarly untalented adult’s) deficiencies and bring his rating into line with his enthusiasm and effort? Say, something over 1400 USCF.
What is necessary for the unskilled adult who takes time to study chess, but never seems to develop even rudimentary chess skill?