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For a reflex, reaction
time is the time from the onset
of a stimulus until the organism responds.
- Simple reaction time is the time it takes to react to a simple
stimuli- or small change in the enviorment.
- Complex reaction time is the latency between a variable stimulus
and a respectively variable response.
- Go/NoGo (also called Recognition) reaction
time task in which participants respond to one particular event but
ignore other events
- Choice reaction time task in which
participants respond differentially to two stimuli by pressing one key
for event A and a separate key for event B.
The major factors affecting
reaction time are:
- Number of stimuli;
- Type of stimulus;
- Stimulus intensity;
- Deseases, such as chicken pox;
There are many other factors
that can also affect reaction time:
- Practice and error
- Race (Jensen, 1993)
- Finger Tremors (Brebner and Welford, 1980)
- Left vs. right hand (Dane and Erzurumluoğlu, 2003)
- Vision (Direct vs. Peripheral) (Brebner and Welford, 1980)
- Breathing Cycle (Buchsbaum and Calloway, 1965)
- Stimulant Drugs (Caffeine) (Lorist and Snel, 1997)
Arthur Jensen (1979) emphasized a different aspect of information
processing speed; specifically, he proposed that intelligence can be understood
in terms of speed of neuronal conducting. In other words, the smart person is
someone whose neural circuits conduct information rapidly. When Jensen proposed
this notion, direct measure of neural-conduction velocity were not readily
available, so Jensen primarily studied a proposed proxy for measuring neural
processing speed: choice reaction time – the time it takes to select one answer
from among several possibilities.
Different Section are made visible to
the user where the user sees the information regarding Current Letter, Your
Response , Start Button and Stop Button.
When the user
clicks on the start button, the Current Letter shows the letter which the user
had to press. In the meantime, the timer has been started to note down the user
reaction time. When the user clicks the character on the keyboard (whether
Correct/Wrong), next letter will appear on the screen and the timer will start
will note all the response time of all the letters, so that a complete summary
screen will be shown to the user.
When the user
ends the program, the program shows the summary window to the user. In the
summary window, it shows the user the average time of all the characters.
User also had
a option for selecting the response time for different characters, and it also
shows the average time for that character.