Final Exam Flashcards
Fitts’ Stages of Learning are designed to consider…
Perceptual-motor learning
Motor performance changes as a function of practice
Fitts’ 3 stages of learning
1) Cognitive Stage (what do I do, break it down)
2) Fixation Stage (what else is going on)
3) Autonomous Stage (integration and expertise)
Cognitive Stage
Verbalize the skill, figuring things out with instructions, transferring skills, effective strategies are discovered
Significant gains made quickly, yet still not smooth or confident
Demands concentration which interferes with processing other sensory events
Fixation Stage
a.k.a associative/motor stage
Cognitive problems and technicalities have been solved, not moving on to the most efficient and effective way to execute action, “building” the motor program
Performance improves steadily, inconsistency between trials (trying to find the best method) decreases, less self-talk, develop error detection
Much longer than cognitive stage
Autonomous Stage
After lots of practice, expert performance, high perceptual anticipation, less programs organized and initiated, less demand on attention
an simultaneously perform higher-order cognition (ex. strategy), self-talk almost absent, higher confidence, fine-tuned error detection
Performance improvements are slow (because they are an expert), but motor learning is still occurring
Bryan and Harter
Studied morse code learning
Skill of receiving morse code became more efficient with practice both quantitatively (speed of letter detection) and qualitatively (identifying letters, groupings of letters, words, common phrases, etc.)
Found consistency in movement timing continued to improve
Perceptual and motor skills never stopped improving, performance became more efficient and less variable (more reliable)
Crossman
Studied cigar rolling
Found that improvements plateaued after 7 years of practice, but not because of a limitation in human performance. The plateau was because of the machine’s limit in cycle time
Presumably, cigar rollers’ time would’ve improved if the machines could go faster
Why is the idea that learning ends an illusion?
Because those results are almost always caused by a limitation of sensitivity of the equipment.
Berntein’s Stages perspective is from…
A biomechanics and combined motor control perspective
Bernstein’s Stages
Stage 1) Reduce degrees of freedom (bare-bones skills)
Stage 2) Release degrees of freedom (whole body integrated in skills)
Stage 3) Exploit passive dynamics (let the body do it’s thing to do skills)
What is a degree of freedom?
A possibility of how many muscles and joints are free to use (to perform something)
Stage 1) Reduce degrees of freedom
Reduce nonessential/redundant body parts (freezing these degrees of freedom) in early stages of learning
The idea is to maximize control and attention on rudimentary parts of the action
Stage 2) Release degrees of freedom
When stage 1 (minimum degrees of freedom) starts to succeed, release some degrees of freedom that help in speed and/or greater force production
Stage 3) Exploit passive dynamics
Movement becomes maximally skilled in effectiveness and efficiency
Take advantage of passive forces (momentum, gravity, spring-like behaviour of muscles, etc. energy and motion that come “for free”)
Studies that suggest learning never stops
Bryan and Harter’s Morse Code study
Crossman’s Cigar Rolling study
Limitations of Fitts’ and Bernstein’s models
- Some movements never release degrees of freedom (some tasks require lots of concentration and will stay at the freezing stage, never releasing)
- Some tasks never become autonomous
- Fitts’ stages aren’t unidirectional, they can regress in situations of high arousal and/or long periods of misuse (no recent practice)
Forgetting skills (Discrete skill)
Longer retention intervals produce more forgetting
No universal/general guidelines on how long it takes to forget a skill
Depends on quality and intervals of practice, and the skill itself
Studies show that performance may be poorer in initial retention trials, it was easier to retrieve that motor program after a short amount of time
Many different ways to graph performance skills
Not talking about errorsMore cognitive tasks are forgotten quickly, but are developed and gained relatively quickly
More cognitive tasks are forgotten quickly, but are developed and gained relatively quickly
Forgetting skills (Continuous skill)
Almost no forgetting even after a year
But still depends on time interval and quality of practice
Warm-up decrement
Skills where warming-up a skill is required before achieving optimal performance
NOT physiological warm-up, we’re talking about psychological warm-up
- Varies between skills
- After 20 mins of not performing a discrete skill, we forget a lot of it
- Decrement decreases when practice interval increases (more practice = less decrement)
- Brought on by passage of time
- You get reacquainted with skills
Forgetting is not a loss of memory, we lose the…
SET (use it or lose it principle)
set = various psychological processes to execute the skill optimally
- Discrete skills: we can still do a free throw after not doing it for a while, but it just won’t be as good (loss a few SET properties of the action),
ex. Some pro athletes try free throws without a ball before actual free throws (not improving physical performance or biomechanics, but re-familiarizing psyche with action)
Skill transfer
Types and amounts of specificity for transfer and retention
- Important for fixation, but variable for transfer
- Whether or not transfer is possible
- Types of transfer
Similarity
The more similar two skills are, the more transfer will occur
- NOT actually as simple as this irl though (because similarity is pretty broad and hard to put parameters on)
Ex. is throwing a baseball more similar to throwing a javelin or a football? We don’t know
Similarity - Fundamental movement patterns
Movement classes and degrees of freedom are important here
Ex. throws that require similar degrees of freedom and force generation are more transferrable
The more overlap of instruction, the less learning required, thus more transfer can happen
Similarity - Perceptual elements
When 2 skills share similar info processing demands, transfer is likely higher
- Anticipation and feedback strategies are the same, then it can be improved and transferred
