Our school here is psycholinguistic, but we also peek to what other folks do. We people just like to have a few schools of thought. "Psycholinguistics" is a vaulter. You can ask Alice about vaulter words.
My name's Jemma. I can tell you about this psycholinguistic matter. The word comes from psychology and linguistics. Psychology is about our psyches, the mind thing. Linguistics is language talk. But we also think about our brains. There is not much psyche or language without the brain, you see.
It is just like we folks have some good gear in our heads, so it is good to think about it, at least sometimes, for grammar. This is why we do our thing here, to make grammar easier on brains.
This is how the American Heritage dictionary defines psycholinguistics: "the study of the influence of psychological factors on the development, use, and interpretation of language".
We always compare dictionaries.
Here is Merriam-Webster talk about psycholinguistics: "the study of the mental faculties involved in perception, production, and acquisition of language".
Now, I can do my talk. Psycholinguists came about in 1960s, they countered behaviorists. Alice has prepared a Wiki on Mr. Skinner — see if you'd like the behaviorist guy.
I can give you an example, on what a behaviorist would do. A behaviorist would blow a trumpet and knock you on the knee with a hammer to get you jerk, like in this picture here.
He or she would keep on knocking, till they'd get you kicking with the trumpet only. This is what they call objective — when you go kicking at a sound of trumpet alone, for our example.
Hard to think this could make sense with anything like music, especially dynamic.
Alice says it is objective the hammer would be the unconditioned stimulus and the trumpet would be the conditioned thing, but the behaviorist could not have any common sense, to try to show any such thing about any particular kid.
Mr. Skinner, one of top them behaviorists, believed that free will was an illusion. To really think that, we'd need to be thankful to king George III for the War of Independence, and to British troops for the Anthem, like they sieged Fort McHenry to bring the Anthem about. You see, the behaviorist thing does not make much sense.