Motor learning ch 4-6 – Flashcards with Answers
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Central Nervous System (CNS)
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brain and spinal cord
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Peripheral Nervous System (PNS)
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peripheral nerves that extend from the spinal cord connecting the body and CNS, divided into afferent and efferent nerves
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afferent
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sensory nerves that conduct the impulses about the environment from the body to the CNS
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efferent
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Motor nerves that conduct impulses away from the CNS or to the muscles or gland or effectors
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Exteroceptor
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detect stimuli outside of the body, located at or near the body's surface (pressure, pain, touch, temp., vibrations, hearing, vision, smell, taste)
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interceptors
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detect stimuli from internal viscera/organs (hunger)
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proprioceptors
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located in the muscles, tendons, joints, and internal ear (vestibular system), provide info regarding body position and movement, detect changes in muscle tension, joint position, and equilibrium
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vestibular system
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first to develop in babies and first for "age" and causes balance
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Vision
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visual system predominates 70% of the body's sensory receptors are in the eyes, 40% of the cerebral cortex is thought to be involved with processing of visual info
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Photoreceptors
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light rays are focused on the retina, image formed and converted to nerve impulse (rods and cones)
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Rods
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are more numerous, do not detect wavelength (color), specialized for dim light, enable us to see shapes and movement
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Cones
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do best in bright light, specialized for color vision and acuity(clearness), located in the fovea
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optic chiasm
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some fibers from each optic nerve cross
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focal vision
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central region of the visual field, strongly linked to consciousness, voluntary control (changes in the trail)
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ambient vision
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subconscious level, spatial localization and orientation, involves the entire retina, serves both central and peripheral fields, not affected by changes in light level (aware of the surroundings and where things are)
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eye dominance
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one eye is dominant in everyone, carries out information processing a few milliseconds faster
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Spotting
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technique used in rotational skills, reduces dizziness, keeps performer oriented, rotation of the head is delayed relative to the body's location
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Visual search
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strategies of gaze behavior (scanning)
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gaze fixation
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during active scanning the gaze lands on numerous objects
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quiet eye
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final fixation located on a specific target or object before the initiation of movement; elite performers have a significantly longer, earlier onset, and more optimal duration (they can see key cues sooner and they have more time to process them)
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targeting skills
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typically involve accurately propelling an object toward a target (targets are fixed, abstract, or moving)
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fixed target
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stable or predictable in position (basketball hoop), performer fixates on the specific target prior to executing a response
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abstract target
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(golf putt) hole is fixed but the aiming is not
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moving target
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anticipating the target's location, passing or kicking, fencing, martial arts, boxing
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interceptive skills
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performer tracks the stimulus, decides when/where it will arrive, and executes appropriate limb movements
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Proprioception
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sensory information received from muscles, tendons, joints, and inner ear; where the body is in space
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golgi tendon organs
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located at the junction of tendon with a muscle , protect tendons and muscles from excessive tension
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muscle spindles
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in skeletal muscle fiber belly (middle of the muscle), muscles is stretched and the spindles give info on how fast and how much the muscle is stretching
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models of learning progression
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one stage overlaps the next, learners can be in different stages for different skills, and stages of learning are not dependent on age
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Fitts and Posner's three-stage model 1967
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learners go through three distinct stages defined by behavior tendencies (cognitive, associate, and autonomous stages)
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cognitive stage
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hight degree of cognitive activity, ask lots of questions, trial and error, attention demands are high, basic movement pattern; instructors should point out similarities and differences with other movements and provide demonstrations and verbal feedback
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associate stage
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refinement of movement pattern, performance is more consistent, ability to time movements with external objects and events improve, can detect their own errors and make changes; instructors decrease instruction, if open skill, practice session should provide experience that develop visual search strategies (quiet eye needs to be faster and longer)
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Autonomous stage
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countless hours of practice,highest level of performance and it is automatic, attention is relocated to decision making, can perform multiple task simultaneously, very few errors, independent with error and correction; instructor is responsible for practice design, error feedback, and motivator
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Gentile's two stage model
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learner's perspective, emphasizes the learner's goal and influence of task and environmental characteristics on the goal. Getting the idea of the movement then fixation for closed skill or diversification for open skill
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getting the idea of the movement
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develop an understanding of the movement requirements necessary to meet demands of the task and environment in which the skill is performed and organize a movement, selectively attentive to info; instructor should focus on the basic movement pattern
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regulatory conditions
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environmental conditions that specify the movement characteristics necessary to perform the task
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non-regulator conditions
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conditions that dont affect the movement pattern
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fixation/diversification stage
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learner's goal is to refine
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closed skill
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successful performance is to replicate the movement pattern consistently and accurately; fixation:refinement of movement pattern
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open skill
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objective is to diversify the movement pattern; diversification:adaptation of movement to conform to ever-changing environmental demands
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Learning
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Is not directly observable
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Movement pattern
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Novice vs. expert movement patterns distinguish level of learning
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Changes in coordination and control occur
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They learn to control the degrees of freedom involved in the movement
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Novices
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Reduce the available degrees of freedom or fix a joint in order to accomplish the goal
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Freezing the degrees of freedom
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Stiff, rigid, ineffectively timed movements. You must consider the skill when deciding whether freezing of joints will be more novice or more skilled
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More fluid muscle activity
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Number of activated muscles to produce the movement will be reduced with learning
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More efficient energy expenditure
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Beginners typically expend more energy doing the same task as experts. This relates to activating the right muscles
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Increased consistency
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When increased consistency occurs in a movement, you can infer that learning has occurred and it is more permanent in nature. Can be good or bad habits
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Attention
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Changes in the amount of attention focused on just movement execution occurs with learning and performance improvements. This allows for increased movement preparation and reduction in response times
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Attention to skill execution
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As learning occurs and skill proficiency develops, less attention is paid to execution and it becomes automatic, allowing the learner to focus more on strategy and environmental cues or AUTOMATICITY
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Second consequences of automaticity
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If you ask someone to consciously focus on an already automated skill, you often see hesitant and choppy performance
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Allocation of visual attention
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Experts direct visual attention to information-rich areas (visual search) whereas beginners focus on too many things and have trouble discriminating between relevant and irrelevant stimuli
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Knowledge and memory
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Knowledge base and memory of a skill increases does skill performance
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Declarative knowledge
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Rules
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Procedural knowledge
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What to do in a situation, need to practice this
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Error detection and correction
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Increased ability for the learner to detect their own errors and correct them; more easily detect the exteroceptive and proprioceptive feedback that sensory receptor provide
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Self-confidence
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As skill increases so does confidence in ability, allow learner to achieve some level of success during each practice
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Performance curves
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Typically follow 4 types of patterns
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Negatively accelerating curve
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Demonstrates the power law of practice; large gains in the beginning with slower gains later in practice, most common (arch up/beginning of rainbow)
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Positively accelerating curve
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Little initial improvement with larger gains later (
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Linear curve
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Direct relationship between performance and time (slanted line /)
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S-shaped curve
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Combination of the negative and positively accelerating curve
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Retention test
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No practice for a while, then test to see if the skill was learned
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Transfer test
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Measures the degree to which a learning can adapt the practiced skill to a different performance situation
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Pretest
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Before the practice period
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Post-test
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Administered directly following a practice period
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Performance plateau
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A period of time during the learning process in which no overt changes in performance occur
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Learning style
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Unique preferences for receiving and processing new information
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Dunn, Dunn, and Price 2000
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Learning styles inventory as found some use in motor skill acquisition
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Dunn and Dunn
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An individual's learning style can be determined by assessing five areas
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1. Instructional environmental preferences
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Sound, light, temp.
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2. Emotional preferences
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Motivation, persistence, responsibility, structure
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3. Sociological preferences
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Individual, pairs, peer, team, adult
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4. Physiological preferences
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Perception, intake (chewing, eating), time, mobility
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5. Psychological preferences
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Analytical mode (details to big picture or big picture to details), hemispherically (right or left brain dominant), action
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Processing preferences
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Learning profiles that are based on processing
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Global leaners
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Learning more easily when they are first presented with the big picture and then asked to concentrate on the details
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Analytical learners
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New information presented in a step-by-step, sequential manner. Builds toward main concept. Likes rules, guidelines
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Perceptual mode
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Easiest to use in motor skill learning. This is the way information is received and processed
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Modal strength
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Preferred mode of taking in information
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Visual learners
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Understand better with visual cue words: watch, see, and look. Use demo videos, pictures, models, and mirrors
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Kinesthetic learners
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Understand better when they can feel what the movements feel like. Strategies like simulations, guidance, repeated practice, and cue words like: feel, move, and experience help
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Analytical learners
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Approach the movement from a problem solving perspective. Scientific concepts and cue words like: analyze, why, and investigate
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Auditory learners
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Prefer sounds and rhythms. Cue words like: hear, pace, and tempo. Benefit from verbal descriptions
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Transfer
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The learning of a new skill or its performance under novel conditions can be influenced by past experience with another skill or skills. Three types
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Positive transfer
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Learner's past experience with one skill facilitates learning a new skill or using a skill in a different context. Accelerates the rate of learning
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Negative transfer
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Past experience with a skill hinders or obstructs learning a new skill or performing the skill under novel conditions
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Zero transfer
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Experience with a skill has no influence on the second skill