=====Learning and Skilled Performance =====
2018-03-14

====Definition (Walker) ====
"Adult human performance involves the utilization of existing hierarchies of habit"

====Phases of Skill Learning====
	- Bryan and Harter 1889 -- telegraphic skill
		- Hierarchy of habits (y)
		- plataus (x) - not shown by later research

====Hierarchical and Sequential Organization of Skills====
	- e.g. Natural languages
	- e.g. golf, shot

====3 Arbitrary phases with "no definite transition"====
	- Early cognitive - "necessary to attend to cues, events & responses that later go unnoticed"
		- demo & instructions
	- Associative/ intermediate - "new patterns begin to emerge"
		- Morse code and flying --> 10 hours - coincidence?
		- scheduling practice: "frequent rest facilitates performance" <- motivation
		- sequence of practice: when synchrony is important, practice whole task asap; can alternate practice
	- Final / autonomous phase
		- pushing keys in response to lights

====Limits of Skill====
	- Exists but "people seldom work up to the theoretical limits which their capacities impose"
	- Snoddy 1926: mirror drawing
	- Crossman 1959: cigar making
	- Short time irregularities are common
	- motivation important for performance improvements

====Old Habits & New Skills - compatibility helps - surgeon vs student!====
	- Learning: "transfer of prior habits to new situations"
	- negative vs positive transfer - e.g. driving side of the road
	- population stereotype/ associative norms (languages)
		- concept of "compatibility" - {45 dg suture}

===="Skills vary in complexity" -- book thesis====

====Source====
transcribed from written notes  2018-04-17 18:16:23