experimental setup and control setup

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What should an experiment have both control and experimental setups?

Table of Contents

• 1 What should an experiment have both control and experimental setups?
• 2 Why should an experiment have both control and experimental setups?
• 3 What is the experimental setup in an experiment?
• 4 What is meant by ” experimental set up ” and ” control set up?
• 5 When do you set up an experiment do you introduce the independent variable?

Expert Answers When you set up an experiment, you have to have one set up where you introduce the independent variable (the experimental set up) and one where you do not (the control). That way, you can compare the two and see the impact of the independent variable.

What is the meaning of control setup and experimental setup?

Expert Answers When an experiment is carried out, it’s important that only one variable is tested so that any changes observed can’t be attributed to another factor. A control set-up “controls” for other factors. Ideally it’s the exact same set-up as the experiment except for one difference – the variable being tested.

Why should an experiment have both control and experimental setups?

Controls eliminate alternate explanations of experimental results, especially experimental errors and experimenter bias. The selection and use of proper controls to ensure that experimental results are valid (for example, absence of confounding variables) can be very difficult.

What is a control in an experiment examples?

When conducting an experiment, a control is an element that remains unchanged or unaffected by other variables. For example, when a new type of medicine is tested, the group that receives the medication is called the “experimented” group. The control group, however, receives no medicine or a placebo.

What is the experimental setup in an experiment?

What is the experimental setup? When you set up an experiment, you have to have one set up where you introduce the independent variable (the experimental set up) and one where you do not (the control). The two groups are treated EXACTLY alike except for the ONE variable being tested.

What is a control setup example?

A simple example of a controlled experiment may be used to determine whether or not plants need to be watered to live. The control group would be plants that are not watered. The experimental group would consist of plants that receive water. Sometimes setting up a controlled experiment can be confusing.

What is meant by ” experimental set up ” and ” control set up?

What’s the difference between experimental and control groups?

When do you set up an experiment do you introduce the independent variable?

How are control setups used in scientific research?

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That actually explain what's on your next test, experimental setup, from class:, ap psychology.

An experimental setup refers to the specific arrangement and conditions in which an experiment is conducted to investigate a hypothesis or research question. It involves manipulating independent variables, measuring dependent variables, and controlling extraneous factors.

Related terms

A control group is a group in an experiment that does not receive the treatment or manipulation being tested. It serves as a baseline for comparison with the experimental group.

The independent variable is the factor that researchers deliberately manipulate or change in an experiment to observe its effect on the dependent variable.

The dependent variable is the outcome or response that researchers measure or observe in an experiment. Its value depends on changes made to the independent variable.

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Practice Questions ( 6 )

• What experimental setup could be used to explore the impact of stress on academic performance?
• If you want to examine whether neurogenesis affects memory retention, which experimental setup would be most effective?
• Which experimental setup would effectively illustrate the concept of shaping in operant conditioning?
• Which experimental setup would be most suitable for evaluating the effect of sensorimotor activities on cognitive development in toddlers?
• What experimental setup could investigate the relationship between self-efficacy and goal-setting among college students?
• Which experimental setup could effectively examine the role of peer pressure in altering teenage smoking attitudes?

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What Is an Experimental Setup in Science?

In science, the experimental setup is the part of research in which the experimenter analyzes the effect of a specific variable. This setup is quite similar to the control setup; ideally, the only difference involves the variable that the experimenter wants to test in the current project.

Consider a scenario in which a researcher wants to determine whether scuffing a baseball with an emery board provides more distortion to the baseball’s flight than a dab or two of Vaseline. Both of these methods were used, primarily in the 1970s and 1980s, to help pitchers gain an advantage over batters. The researcher would engage the services of a pitcher, and after a warm-up period, would have the pitcher throw a set number of pitches, such as 10 fastballs and 10 curve balls with no doctoring to the baseball at all. This is the control setup.

Next, the pitcher would use an emery board to scuff the surface of the ball. It would be important for these pitches to take place at the same time and place as the control pitches to keep the environmental factors the same. The experimental setup would involve 10 fastballs and 10 curve balls with the doctored baseball. Continuing with 10 fastballs and 10 curve balls with a ball that has some Vaseline on it and comparing observations of the flight of the baseball would constitute the experimental setup. The observer could be a potential batter or someone standing behind the catcher — or the catcher himself.

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In an experiment , data from an experimental group is compared with data from a control group. These two groups should be identical in every respect except one: the difference between a control group and an experimental group is that the independent variable is changed for the experimental group, but is held constant in the control group.

Key Takeaways: Control vs. Experimental Group

• The control group and experimental group are compared against each other in an experiment. The only difference between the two groups is that the independent variable is changed in the experimental group. The independent variable is "controlled", or held constant, in the control group.
• A single experiment may include multiple experimental groups, which may all be compared against the control group.
• The purpose of having a control is to rule out other factors which may influence the results of an experiment. Not all experiments include a control group, but those that do are called "controlled experiments."
• A placebo may also be used in an experiment. A placebo isn't a substitute for a control group because subjects exposed to a placebo may experience effects from the belief they are being tested; this itself is known as the placebo effect.

What Are Is an Experimental Group in Experiment Design?

An experimental group is a test sample or the group that receives an experimental procedure. This group is exposed to changes in the independent variable being tested. The values of the independent variable and the impact on the dependent variable are recorded. An experiment may include multiple experimental groups at one time.

A control group is a group separated from the rest of the experiment such that the independent variable being tested cannot influence the results. This isolates the independent variable's effects on the experiment and can help rule out alternative explanations of the experimental results.

While all experiments have an experimental group, not all experiments require a control group. Controls are extremely useful where the experimental conditions are complex and difficult to isolate. Experiments that use control groups are called controlled experiments .

A Simple Example of a Controlled Experiment

A simple example of a controlled experiment may be used to determine whether or not plants need to be watered to live. The control group would be plants that are not watered. The experimental group would consist of plants that receive water. A clever scientist would wonder whether too much watering might kill the plants and would set up several experimental groups, each receiving a different amount of water.

Sometimes setting up a controlled experiment can be confusing. For example, a scientist may wonder whether or not a species of bacteria needs oxygen in order to live. To test this, cultures of bacteria may be left in the air, while other cultures are placed in a sealed container of nitrogen (the most common component of air) or deoxygenated air (which likely contained extra carbon dioxide). Which container is the control? Which is the experimental group?

Control Groups and Placebos

The most common type of control group is one held at ordinary conditions so it doesn't experience a changing variable. For example, If you want to explore the effect of salt on plant growth, the control group would be a set of plants not exposed to salt, while the experimental group would receive the salt treatment. If you want to test whether the duration of light exposure affects fish reproduction, the control group would be exposed to a "normal" number of hours of light, while the duration would change for the experimental group.

Experiments involving human subjects can be much more complex. If you're testing whether a drug is effective or not, for example, members of a control group may expect they will not be unaffected. To prevent skewing the results, a placebo may be used. A placebo is a substance that doesn't contain an active therapeutic agent. If a control group takes a placebo, participants don't know whether they are being treated or not, so they have the same expectations as members of the experimental group.

However, there is also the placebo effect to consider. Here, the recipient of the placebo experiences an effect or improvement because she believes there should be an effect. Another concern with a placebo is that it's not always easy to formulate one that truly free of active ingredients. For example, if a sugar pill is given as a placebo, there's a chance the sugar will affect the outcome of the experiment.

Positive and Negative Controls

Positive and negative controls are two other types of control groups:

• Positive control groups are control groups in which the conditions guarantee a positive result. Positive control groups are effective to show the experiment is functioning as planned.
• Negative control groups are control groups in which conditions produce a negative outcome. Negative control groups help identify outside influences which may be present that were not unaccounted for, such as contaminants.
• Bailey, R. A. (2008). Design of Comparative Experiments . Cambridge University Press. ISBN 978-0-521-68357-9.
• Chaplin, S. (2006). "The placebo response: an important part of treatment". Prescriber : 16–22. doi: 10.1002/psb.344
• Hinkelmann, Klaus; Kempthorne, Oscar (2008). Design and Analysis of Experiments, Volume I: Introduction to Experimental Design (2nd ed.). Wiley. ISBN 978-0-471-72756-9.
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Tackle Control Set-up Questions Like A Pro

Posted by Lim Zi Ai | Jul 14, 2016 | Experimental Techniques , Primary 5 Science , Primary 6 Science , Primary School Science Techniques | 0 |

Experiment-centric questions are increasingly common in primary school examination papers today.

There are typically six types of experiment-centric questions that can be tested:

• Relationship – What is the relationship between X and Y?
• Fair Test – How do we ensure a fair test?
• Reliability – How can the experiment be more reliable?
• Aim – What is the aim of the experiment?
• Conclusion – What can you conclude from the experiment?
• Control Set-up – What is the purpose of the control set-up?

I’m sure you’ve probably seen a variation of one of the above questions in your child’s examination paper.

Read Also Tackling Conclusion Type Questions FAQ: The Pique Lab – Experimental Techniques Masterclass The CUE Method To Tackle Data-Based Questions

Many students often struggle to structure their answers in a coherent & scientific manner, causing them to lose marks unnecessarily.

The good news is that we know what are the possible experiment-centric questions that can be tested!

We’re able to help your child prepare these answers ahead of their examinations & execute them when they see something similar. 🙂

Isn’t that amazing?

In our previous article, we discussed tackling conclusion-type questions , arguably one of the more challenging experiment-centric questions.

Today, we’ll be looking at how to tackle control set-up questions . It is often expressed in the following format:

What is the purpose of the control set-up?

For this particular question, students are often able to identify the changed variable and the measured variable in the question. The challenge lies in using the correctly identified variables to structure their answers properly.

As such, I would like to introduce a template answer to help your child with control set-up questions.

Thought Process

A control set-up is often needed to ensure that the experiment is valid & accurate. It serves as a baseline for the comparison of the results of the main experiment.

The control set-up will also rule out other environmental variables from affecting the results and eventually help to establish the conclusion of the experiment.

Ultimately, the control set-up is in place to ensure that the measured variable (dependent variable)  is affected only by the changed variable (independent variable)  and not any other variable in the experiment.

Template Answer

The purpose of preparing Set-up __ is to act as a control set-up to ensure that the _____________ (measured variable) is only caused by the ___________ (changed variable) and not any other variables in the experiment.

Final Answer

With reference to part (b) of the above question…

The purpose of preparing Set-up B is to act as a control set-up to ensure that the change observed in the limewater (if any) is only caused by the gas produced during decomposition and not any other variables in the experiment.

I hope that this article has shown you how to apply to correct template answer to easily tackle experiment-centric questions on control set-ups!

If you like our methodology, please click here to explore our Experimental Techniques™ Masterclass  for P5 & P6 students.

About The Author

Over the past 13 years, Ms. Zi Ai has worked with primary and secondary students from a wide spectrum of backgrounds. She is highly proficient in helping her students navigate the thought processes and answering techniques required to excel in PSLE Science examination. As a Psychology graduate from the National University of Singapore, she actively seeks to use her knowledge to get her students to be intrinsically motivated to learn Science. Her secret lies in helping the child rediscover their interest for learning through her wide arsenal of humorous and inspiring teaching methods.

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What Is a Control Setup in Science?

A control setup in science uses the same conditions and the same equipment as the experimental setup; however, there are no variables tested in the control setup, as there are in the experimental setup. A control setup can include the use of a control group, which takes place when the experiment includes people.

The people in the control group act as a control set-up. They do not receive the factor or active medication that the people do in the experimental group, which acts as the experimental setup.

A controlled experiment can use a control group or a controlled setup, but is designed so that only one variable is manipulated at a time. This is necessary for the experiment to produce accurate results because if there are multiple variables then the scientists cannot know which variable produced which result.

The scientific method is used in the experimental process and in a controlled setup. The scientific method has several steps, which are: ask a question, do background research, construct a hypothesis, test the hypothesis by doing an experiment, analyze the data and draw a conclusion and communicate the results. The scientific method is the method by which all experiments are conducted and allows scientists to ask and answer scientific questions through observations and experiments.

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The control group and experimental group are compared against each other in an experiment. The only difference between the two groups is that the independent variable is changed in the experimental group. The independent variable is "controlled", or held constant, in the control group. A single experiment may include multiple experimental ...

An experimental setup is conducted in the same manner as the control, but it includes one aspect to be measured. A control setup uses all the same equipment under the same conditions, but no variables are tested, and it provides a baseline with which to compare the results of the experiment setup. A scientific experiment has several parts ...

VL #2 - RESEARCHThis video lesson discusses CONTROL AND EXPERIMENTAL GROUP, in a very simple manner and comprehensive examples. It is an interactive video b...

An experimental setup refers to the specific arrangement and conditions in which an experiment is conducted to investigate a hypothesis or research question. It involves manipulating independent variables, measuring dependent variables, and controlling extraneous factors. ... Control Group: A control group is a group in an experiment that does ...

A control set-up is often needed to ensure that the experiment is valid & accurate. It serves as a baseline for the comparison of the results of the main experiment. The control set-up will also rule out other environmental variables from affecting the results and eventually help to establish the conclusion of the experiment.

In an experiment, an experimental set-up and a control are often prepared. Setting up a control aims to ensure the result of the experiment is due to the factor under investigation only. Note the following when we design a control: The control is identical to the experimental set-up except that the factor under investigation is absent.

Experimental Setup and Variables Experimental Setup vs Control Setup. Experimental setup: The group in an experiment that receives the treatment or variable being tested. Control setup: The group in an experiment that does not receive the treatment or variable being tested. It serves as a baseline for comparison. Definition and Importance of ...

Control Setup. Control setup questions require students to understand the importance of a control group in an experiment. Students must explain the purpose of a control setup and how it contributes to obtaining reliable results. Understanding why these questions are asked will help your child answer them correctly.

I always assumed that the Method and Experimental Setup were one section were you describe your setup/method in detail. computer-science; formatting; Share. Improve this question. Follow asked May 2, 2016 at 2:44. apples-oranges apples-oranges. 173 1 1 silver badge 4 4 bronze badges. 1.

What is a constant setup experimental setup control setup and an experimental variable?

For example if you wanted to see if plants would grow faster watered with sugar water or plain tap water, your constant control set up would be the plant watered with plain water. Since this is the "normal" condition with no changes it is the control setup.

Additionally there are two kinds of controls, positive and negative. Positive controls will have an indication or contain the specific substance that the test or instrument is used for. On the other hand, negative controls don't contain that specific substance or instrument. For example if you were testing the effects of aspirin on inflammation and you gave a group, 20 mgs of a placebo, that would be a negative control. Opposite to that would be a positive control, if you were testing the same thing and instead gave the group 20 mgs of the aspirin.

In the example of the plants watered with tap or sugar water, the experimental set up would be the plant watered in the sugar water. Since this is the setup an which you are testing this, it is called the experimental (think of the experimental setup as a test) setup.

The experimental variable is basically what you are changing between the control and experimental setups.

In the example, your experimental variable would be what the plant is watered with. So in this case, it would be the sugar water.

A constant in an experimental setup is a factor that is kept consistent throughout the experiment. The control setup is the group in an experiment that remains unchanged to provide a baseline for comparison. An experimental variable is the factor being tested or changed in an experiment to see its effect on the outcome.

You may find the answer to your question in this website:

http://answers.yahoo.com/question/index?qid=20080615165001AABZ33w

Copy paste it:-)

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What is the variable setup in an experiment called?

The variable setup in an experiment is called the experimental design. This design includes all the factors and conditions that are manipulated or controlled in the experiment to test the research hypothesis.

What is the scientific definition for a control?

In an experiment, a control is a standard used for comparison to the experimental group. It is a variable that remains constant and is not subjected to any changes, allowing researchers to isolate the effects of the manipulated variable. Controls help ensure that any changes observed in the experimental group are due to the treatment being tested.

An experiment setup in which the independent variable is not present is called the?

When conducting experiments in science, it is important to have a baseline for knowing what happens if an independent variable is not present. In science, this is called the control experiment.

What is a experimental group?

An experimental group is the group in an experiment that receives the treatment or intervention being tested. This group is compared to a control group to assess the effects of the treatment. The experimental group helps researchers determine if the treatment has an impact on the outcome being studied.

What is the importance of a control setup in a scientific experiment?

search: www.wikipedia.com

What do you call an experimental setup in which the experimental variable is missing?

control setup

What are the difference between control set up and variable experimental set up?

The control variable is the thing you keep the same and is everything that is not the independent variable. The Control Setup is there for the sake of comparison.

What is variable what is controlled variable what is manipulated variable What is constant variable?

Variable is, logically, something that varies, that is to say, is not constant over time. Controlled variable, in the control field theory, is a variable measure that is, or that needs to be, controlled. Like a voltage that you need to keep under 10Volts because some devices in the setup have an amplitude limitation. Manipulated variable is usually a measure, a variable that you can measure. For example, if you can measure the voltage in the experimental setup then you can manipulate it, like using it to power a device. Constant variable, i think this is not very correct, a mathematician's opinion might be needed. For me is a variable, thus something that is variable over time, that under certain conditions becomes constant, thus stops varying according to time.

2 kinds of setup in an experiment?

control and experimental setup

Why is it important to test only one variable at a time during a experiment?

If you test only one variable then you know that the difference in the experimental and control setup is that one independent variable. If you test more than one you will not know which one made the difference.

Why is it important to test only one variable at a time during a science investigation?

What is the part of an experiment called that contains the variable.

The part of an experiment that contains the variable being tested is called the experimental group. This group is the one where the treatment or manipulation is applied to observe its effects.

What is the control setup of an experiment?

only 1 parameter, or, variable, is manipulated at a time

What is experimental setup?

were you setup your own experiment

How does the control setup in an experiment differ from the other setups in the same experiment?

EXPERIMENTAL SET UP * involves the set up that will allow you to investigate what you are interested to know. CONTROL SET UP * involves a set up that is exactly the same as the experimental, except the factor that you hypothesis to influence the results.

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