Kinesiology 1080A/B Lecture Notes - Lecture 6: La Liga, Quartile
11 Jun 2018
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Topic 6
After midterm 2
Birthday Asymmetry affect
• Anyone born between first quartile of the year tends to do good in soccer
• They looked at different leagues- school youth, regional youth, La liga, Basque population, Elite
league
• Percentage of athletes decreases linearly as we move down quartiles
• Known as Birthday asymmetry affect in sports
• Looked at every sport possible in North America
• Why? → Gives them 7-8 extra months to develop → Maturation is an element
o Child born in Q1 is better, bigger, better cognitive ability, stronger and CONFIDENT
with abilities
o They end up enjoy it lot because they are doing better→ they will play more
o Playing more will lead to being chosen for elite competitive teams which will give them
better coaching
• Preventing→ coaches who coach young people should give them chance for them to develop
and don’t spend all the time on few kids
3 Stage model
Second Stage→ Response Selection
Response Selection Stage
- Once stimulus is identified, the appropriate action must be selected
- Eg. “ to brake or swerve to avoid a parked car”
- Spatial compatibility
Factors that influence Response selection
- Number of stimulus response alternatives
- Stimulus compatibility
Stimulus Response Alternatives
- Increasing the number of alternatives relevant to a response increased the time required to process
and select an appropriate response
Hick’s Law
- Task → Choice reaction time task
- Results → RT increased by 150ms every time the S-R alternatives doubled
Thus, relationship between choice RT and the logarithm of the S-R alternatives is linear
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Once stimulus is identified, the appropriate action must be selected. To brake or swerve to avoid a parked car . Increasing the number of alternatives relevant to a response increased the time required to process and select an appropriate response. Results rt increased by 150ms every time the s-r alternatives doubled. Thus, relationship between choice rt and the logarithm of the s-r alternatives is linear. Stimulus information in bits on x axis and rt time on y axis. This equation can be adapted to compute an rt value in a choice rt task. Choice rt = a+b {log 2 (n)} Y intercept- a represents a simple reaction time. B- slope- how much does reaction time change as you go from one bit of information to another. What is the log to the base of 2 (n) it represent the index of difficulty in a bit of information.
