Reaction Time Worksheet: Alcohol, Drugs, And Caffeine

A control group should be used in an experimental study because you need an independent variable to base your test off of. This variable cannot influence the results. A common example of a control group is one that is held at ordinary conditions so there is no changing variable. For example, if you want to experiment on the effects of fertilizer in plant growth, a control group would be a plant or plants that are not given fertilizer. The experimental group would receive fertilizer. The control group then provides a baseline to see if the experiment had any effect.

6. Restate your predictions that were correct and give the data from your experiment that supports them. Restate your predictions

To test a hypothesis about a given variable, experimental and control groups are tested in parallel. Which of

Throughout this investigation, data collection and statistical analysis will be performed to determine the validity of the following claim; “for driving a car, quick reactions are the most important factor. Males will be better drivers than females because they have faster reaction times” (Michael, 2014). In terms of driving, the time it takes for an individual to react to stimulus will have a major impact on the outcome of the situation. In an emergency, a driver may be required to rapidly slam on the breaks or turn the steering wheel, however it the individuals reaction time is slower than average, the likelihood of a collision is much greater. For instance, when an individual with a

Reflexes are the body's reaction something, reflexes are signals that are sent from your neurans to your brain and your brain processes the information then responds. To test if the difference between voluntary and involuntary effects the reaction time. In this lab the voluntary reaction time was the time between when the hammer hit the table and when the leg moved. The involuntary reaction time in this lab was the time between the time when the hammer hit the knee and the time where the leg moved.

2C. A control group is usually not tested around the independent variable, so it's kept away. A controlled variable is a variable you yourself can control during an experiment.

Though the control group does not receive any type of treatment and is randomly selected, they do play a crucial role when establishing if there was significance in the data collected as well as the results. The control group is what helps in determining if the experiment did have an effect and to which extent.

2. Explain your choice of graph in question 1. Why is this the best way to represent the results of this experiment?

Reaction time is the interval of time it takes for someone to detect something and to react to it. For an average driver with no distractions, it can take them around 1.5 seconds to react. If they were distracted, from music or mobile phones, it could take them up to 3 seconds to react.

Many things can affect the rate of reaction. One being the natural reactivity of the reactants themselves given their bonds and ionization energies. Also, the concentration

7. Without looking it up in a textbook or online, provide your own definition of "experimental design".

Donder’s decision-making experiment was very simple. He measured the relationship between the presentation of the stimulus and the subject’s response to the stimulus using reaction time. The experiment showed that reaction time was relative to the required task. It was evident that when the request was simple, the participants' reactions were sudden, but when it was complex, the participants' reactions were much slower. Additionally, another aspect to this experiment introduced several stimuli and the participant’s had to

Reaction time is the number of seconds it takes for a person to react to something. When reacting to something at first the person predicts what they need to do. This causes neurons to start moving around, but not enough for your body to start moving. Then when the person gets a signal to do something the neurons start moving really fast, that's when your body starts to

What is seen in the data is that there is not a steady decline in the reaction time when you compare each column to the previous or next respectively. The time increases when comparing Group A to Group B, but not Group B to Group C. The same also applies to Group C to Group D and then a decrease from Group D to Group E. Figure 1 shows a clearer picture of the RT when compared to all of the reaction time. Even though the time decreases in some areas, there is clear increase or RT when looking from the youngest to olderst.

Hence, we fail to reject the null hypothesis and conclude that all the mean scores are equal. That is there is no significant difference in three different groups with respect to their pulse rate.