DEFINITIONS

• Reaction time
• Movement time
• Response time
• Foreperiod
• Simple RT
• Choice RT
• Stages of information porcessing
• Donders ABC

• Reaction time- How fast you can responed to something.
• Movement time- time taken from movement initiated till movement ends.
• response time- time taken from stimulus presented till movement ends
• Foreperiod- time between the warning and stimulus presented.
• simple RT-participents know which response to produce prior to stimulus.
• Choice RT- participants do not know which response to produce prior to stimulus.
• stages of information processing- stages of learning.
• Dondera ABC- A, Simple RT; B, Choice R.T; C, Go-no go.

Process of movement

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Anticipation

• invalid results- movement initiated by anticipation rather than a warning or stimulous.

How to Prevent anticipation??

Prevention...

• Catch trial- Present a warning but give no stimulous

• Vary Foreperiod- Changing the time between warning and stimulous

• Minimum RT- A set period the participent has to react in. E.g athletes ave to react in 100m/s to the start gun other wise they are disqualified.

Reaction time in sport!

• Loud accousticc stimulus can 'startle' reaction and can shortern reaction time.

• IAAF have 100ms reaction time before diqualification 

• Startle reaction time 55-65ms

Simple Reaction Time

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Choice Reaction Time

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Simple Reaction Time VS Choice Reaction Time

• Simulus identification stage in choice RT not simple RT

• Select the correct response needed in choice RT.

• In choice RT no pre-programming to stimulate like in simple RT.

• Broarder attention span in choice RT than simple RT as more information present to pay attention to.

Donders ABC

• A, SIMPLE RT E.g race start.

• B, CHOICE RT E.g defender approaches decision to pass or take them on.

• C, Go, No Go E.g tennis serve, In serve....go; ou serve....no go!

A is faster than B & C

C is faster than B

B is the slowest of all three reaction times