I remember when we were looking for toys for the 9 month age. We were good already with passive toys. So, we were more interested in in good active toys. Somehow, I had forgotten one of the basic concepts in psychology: the best way to study for a test is to replicate the conditions of the environment where the exam will be taken.
The best way to recall the test information is to create a study environment closely resembling the testing situation. The difference between an A and a B could be sitting in a desk in a quiet room over laying on a couch with Metallica pumping through headphones.
This study essentially confirms similar in infants. They cycle through calm attentiveness, wakeful activity, and crying. Recall is better if the state matches the state at encoding.
We cycle through these states, so I need to ensure multiple encoding opportunities to get maximum coverage. Don’t just wait for or try to achieve calm attentiveness for a learning opportunity. (I do talk about physics of the activity while Fleur is in physical play. Just need to mix it up a bit.)