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Motor Skill
activity or task that require voluntary movement to achieve a goal
4 criteria of a motor skill
1. Goal-oriented movement
2. Movement must be voluntary
3. Body and/or limb movements are required to accomplish the goal
4. Must be learned/relearned
3 division of motor skills
Motor Behavior then 3 parts
1. motor control
2. motor learning
3. motor development
Motor Learning
acquisition of motor skills to enhance performance of a skill
Motor Control
neuromuscular system coordinates movement
Motor Development
motor behavior from infancy to old age with issues related to motor learning or control
- emphasis on growth and maturation
3 factors that influence motor skill learning and performance
1. environment
2. task
3. person
Learning
a relatively permanent change in an organism's behavior due to experience
Performance
act of executing skill
Can you observe learning? Can you mess up a performance even if u have learned something?
- No
- Yes
3 things motor skills are classified on
1. precision of movement
2. nature of movement organization
3. predictably of the environment
2 movement precisions
1. fine motor skills
2. gross motor skills
Fine Motor Skills
precise movement sixth smaller musculature
Gross Motor Skills
less precision and multi limb movement
3 types of nature of movements
1. discrete skills
2. continuous skills
3. serial skills
Discrete Skills
start and end pts are clearly defined
- ex: shooting bball
Continuous Skills
start and end pts are arbitrary, repetitive in nature
- ex: running
Serial Skills
collective sequences of multiple discrete skills
- ex: dance and cheer
2 types of predictability of environment
1. open skills
2. closed skills
Closed Skills
stable and predictable environments, where the performer control the performance situation
- ex: bowling
Open Skills
unpredictable, dynamic, everchanging environments where the performer is not aware of what movement type will be required
- ex: driving a car
Closed Skill Practice: ___________ is the objective and technique __________ should be emphasized. The exception?
Consistency, refinement
- exception: closed skills with inter trial variability (ITV)
Open Skill Distinction: Learners must constantly ________ their movements to an ________ and unpredictable environment.
conform, unstable
Open Skill Distinction: Success is less dependent on ________ and more on selecting the appropriate ________ in the given situation
technique, response
Gentile proposed a motor skill taxonomy called? It has two major characteristics
- Multidimensional Classification System
1. The context in which skill is performed (regulatory conditions)
2. The action requirements of the skill
Regulatory Conditions
*Environmental Factors* that specify movement characteristics needed for successful performance
Are all conditions regulatory?
No, some are non regulatory
Ex of non regulatory and regulatory conditions:
Non Regulatory: people cheering, the score
Regulatory: height of dart board, distance to dart board, sharpness of dart
2 question of regulatory conditions
1. Are regulatory conditions stable? (stationary or in motion)
2. Do regulatory conditions remain fixed (No ITV) or change (ITV) with each trial?
Gentile's Taxonomy 2 parts
1. environmental context
2. action requirements
2 parts of environmental context
1. regulatory conditions (stationary or in motion)
2. inter trial variability (present or absent)
2 parts of action requirements
1. body orientation (body stability and transport)
2. manipulation (object present or not present)
2 questions for action requirements
1. Does the performer have to change locations when performing the skill?
2. Does the performer have to manipulate objects or opponents?
Gentile Taxonomy Table

Questions for applying the classification system
1. Are the regulatory conditions stationary orin motion?
2. Do the regulatory conditions remain fixed (no ITV), or do they change (ITV) with each performance attempt?
3. Is the performer required to change locations or maintain body position when performing the task?
4. Does the task require the performer to manipulate an object or opponent?
What is the key factor in the differences in motor abilities?
genetic traits
What was the initial hypothesis on genes and motor ability? The specificity hypothesis?
Initial - a single general motor ability
Specificity - abilities are independent of one another
Who built two categories that are considered to best identify underlying motor abilities that are predictive of high skill proficiency levels, and when? What are the two categories
- Fleischman (1962)
1. Perceptual Motor Abilities
2. Physical Proficiency Abilities
T/F: An individual can have abilities but not be skilled
True
T/F: An individual cannot be skilled without abilities
True
Task Analysis
determine the underlying abilities that are important for the successful performance of a specific skill
- provides a better understanding of a skill's requirements
T/F: Future success in skill can be predicted
False, it is hard to predict bc people develop and change over time
Perception
process by which meaning is attached to sensory info
Two approaches for explaining the nature of perception
1. information processing model
2. ecological approach
Information Processing Model

Afferent Neurons
sensory neurons - sensory input to integration
Efferent Neurons
motor neurons - integration to effector muscle
Affordances
the action possibilities of the environment and task in relation to the perceiver's own capabilities
Ecological Approach to Perception
views relationship b/t perception and action as circular

Reaction Time (RT)
tiem b/t stimulus presentation to movement initiation
RT Influenced by
1. number of response choices
2. levels of uncertainty
3. anticipation
4. fore period consistency
5. psychological refractory period
6. stimulus response compatibility
Response time
reaction time + movement time
Movement Time
time b/t movement initiation and movement completion
Hick's Law
The time it takes to make a decision increases as the number of choices increases
Simple RT
one stimulus and one response
Choice RT
multiple signals and so multiple response to choose from
Inc uncertainty lead to ________ or ________ responses
delayed or inaccurate
Event Anticipation
what event will occur
Temporal Anticipation
predicting when an event will occur
Precues
environmental clues, subtle changes, that aid anticipation
Deception of precues
false precue given
Disguise of precues
hid precues
If something is easier to anticipate then _______ RT
faster
Foreperiod - def, ex, and ideal time
interval of time b/t presentation of a signal and the stimulus
- warning signal/set cue to "go" signal
- Ex: "on your mark get set" time / throwing ball in air before tennis serve
- ideal time: 1-4 sec

Which is a faster RT: consistent or randomized fore period length
consistent
Psychological Refractory Period
The momentary delay in processing the second of two stimuli received in quick succession
- delay b/t response to fake and actual move

For fake to be believable it needs to be _____ and have ________
- be believable
- have right timing
Stimulus Response Compatibility
extent to which a stimulus and its required response are natural related
A low stimulus response compatibility = _______ RT
slower RT
Stroop Test
response interference from naming the ink color of a written color name

Decision Making vs. Movement Execution - def and application
it is important to differentiate b/t moving slowly and initiating movement slowly
- can help build specialized plan to improve client