What clever ideas are there for improving how children memorise whole words?
Those who memorise whole words do it without any particular instruction. They do it because they can. Subsquently they may become part-word assemblers, maybe more effective than memorising whole words, and presumably finding some characteristics to distinguish the most similar-looking (mullet, magnet, mallet, millet, mangle, mental and so on)
Decoding is often intensely disliked by children. It is tiresome, time-consuming, and grownups aren't seen to do it, yet all the lovely words just spill out of their mouths.
But it is possible to provide instruction and practice to improve ability, and there are many studies that substantiate that the most effective and efficient method of instruction is SP.
The major SP programmes on the market have differing characteristics, and it may be that some are better with the very low progress children than others. These sort of studeis have not been done.
When first teaching reading I was told to get one programme firmly in my head, which I did, very good advice. (I have got 2 or 3 others in there.) Many teachers teach from general principles rather than a specific programme. Or if they deliver exactly the same programme, the amount practice done at home may be outside teacher's control.
I know from the programmes I use (all SP) if I do a words read count, with some programmes it is possible to get more words read per minute than with others. Some programmes are decontextualised which must have an effect compared with those which are continuous text.
What I am getting at, probably not very well, is that for the very low progress children like Indigo's child, such details may be more significant than for the majority of learners.