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How could you improve the experiment to reduce the effect of anomalous results?

repeating it


In a controlled experiment how do the number of trials and sample sizes effect the results?

The number of trials and sample sizes generally increase the accuracy of the results because you can take the average or most common results in the experiment


How can the placebo effect cause problems in an experiment?

The placebo contains no medication; is conventionally known as a "sugar pill". It serves the purpose of identifying how much, if any of the reported "side effects" are common symptoms or experiences reported by people within and outside of treatment pool. It also serves to provide a base-line reading of how effective the medication is at treating, curing, or maintaining the disease or condition it's been created for. The "placebo effect" is a term that means that people can experience a percieved result (or side effect) due to simply believing that they are receiving a drug, and therefore, the researchers can better recognize the true affect of drug vs. doing nothing at all. It's a psychological phenomenon that lends itself to a lot of supplements and fad or "brand" vitamins that do not always do what they claim, but people will swear by results: You will often see that those products have NOT been "evaluated by the FDA". If they were, it's thought that the placebo effect would no doubt play a huge role in the reports of effectiveness. Researchers can quantify results based on how many people report experiences (such as fatigue, dry mouth, loss of appetite, etc & how well or not it's working to treat their symptoms) and depending upon which group they are in (the group receiving the actual drug or the group receiving the placebo), the researchers can identify the likelihood & severity of side-effects & the overall effectiveness of the drug for treatment of it's intended condition.


What is it that makes us think that a certain item is lucky?

The effect is known as a placebo. This placebo can be created on multiple reactions. This can be caused by a childhood memory, a subliminal message, or just doing an activity with the object, which, in turn, causes a placebo effect.


What is the benefit of a blind experiment?

Double blind experiments, in the context of medicine, are those in which neither the participants nor the experimenter is aware of who is receiving a treatment and who is receiving a placebo. This removes bias from both the participant and the experimenter. For instance, it has been shown that a participant who believes they are receiving the real treatment will experience a measurable or perceived change, usually an improvement. This effect occurs even if the participant is actually receiving the placebo and is thus known as the placebo effect. Basically the participant believes they have improved and this can sometimes be reflected in an actual change in whatever is being tested for experimentally, e.g. improved health in a drug trial. The other aspect is that if the participant knows they are on the placebo, they will not experience the placebo effect and, for instance in the case of drug trials, may become worse due to a psychological effect, i.e. depression over not receiving a real drug. So, if the participant knows what they are taking, the results for whatever is being experimentally tested for would be distorted, e.g. an over- or underestimation of a drug's potential. As such, participants are not told whether they are receiving the placebo or the treatment. In this way, the placebo effect is either removed, reduced or equivalent across all participants. The second part is that the experimenter also does not know what is being given to a participant. Generally, participants are randomly assigned by computer to either the real drug or the placebo and the experimenter is not allowed to know what the participant is taking until the experiment is over and all measurements have been completed. This avoids the experimenter bias as if they know what a participant is taking, they may be tempted to over- or underestimate the effect. For instance, in a drug trial, an experimenter may see more of an improvement in a treated participant than a placebo participant. This may be an unconscious or conscious action, however, either way it will distort the result. Additionally, an experimenter may accidentally or unconsciously reveal to a participant whether they are on the placebo or drug, which will in turn cause the placebo effect as described earlier. As such, if the experimenter does not know what the participant is taking, they should not suffer from bias nor reveal to the participant. However, this system is not perfect as an experimenter will generally know enough about experiment to be able to work out which participant is taking what, i.e. a drug may exhibit a particular smell or colour or other identifiable characteristic or change in participant. In these cases, the experiment may be handed over to other people to perform, e.g. nurses or doctors, to avoid any chance of bias. The disadvantage to double blind experiments is that they are more costly and difficult to set up, as they will usually require a greater number of people, more rigorous controls. Additionally, the entire experiment must be completed before any conclusions can be made. It may also be impossible to perform some experiments double blind. There may also be other safety, legal and moral constraints as well. For instance, is it morally right to purposely not treat the placebo group of participants who may be seriously or terminally ill? Overall, the double blind experiment is still the "gold standard" in experiments, as it theoretically removes all bias, treats all participants the same whether they are receiving placebo or drug and comes with a negative control.

Related Questions

How can the placebo effect lead to incorrect results in an experiment?

The placebo effect can lead to incorrect results in an experiment by causing participants to report improvements in their condition, even if they are receiving a treatment that is ineffective. This can mask the true effects of the treatment being tested. Additionally, participants' expectations and beliefs can influence their responses, leading to biased outcomes.


True o false a double-blind experiment is used to increase the placebo effect?

False. A double-blind experiment is used to eliminate bias and to minimize the influence of external factors on the results of a study. It helps ensure that both the researchers and the participants are unaware of who is receiving the treatment and who is receiving a placebo.


Why are scientist using a placebo?

Scientists use a placebo to check that the variable they are changing actually is responsible for the results they see. It is like a control experiment, allowing you to compare the trial with it to see if there is any effect. It also counteracts the "placebo effect". For example, this is when someone taking a drug calims they "feel better" despite the drug not actually having any effect. Therefore, by giving some test subjects a placebo and some the drug being tested and not telling them which is which, you can eliminate the placebo effect from the test.


When was The Placebo Effect created?

The Placebo Effect was created on 2003-04-02.


When was Placebo Effect - Doctor Who - created?

Placebo Effect - Doctor Who - was created in 1998.


What is the definition of the placebo effect?

The placebo effect refers to the phenomenon where a person experiences a response to a treatment or intervention that has no therapeutic effect, simply because they believe it will work. This psychological effect can lead to improvements in symptoms or overall health, despite receiving a dummy treatment.


Why would measurements effect an experiment?

Measurements are critical in experiments because they provide data for analysis and conclusions. Accurate measurements ensure the reliability and validity of the results obtained. Inaccurate measurements can lead to incorrect conclusions and undermine the credibility of the experiment.


How does the placebo effect affect the outcome of results?

The placebo effect is when a person experiences a benefit after receiving an inactive treatment simply because they believe it will work. This can lead to an improvement in symptoms or outcomes even though the treatment itself has no therapeutic effect. In research studies, the placebo effect can influence the reported effectiveness of a treatment, making it important to include control groups to account for this phenomenon.


How could you improve the experiment to reduce the effect of anomalous results?

repeating it


A placebo is a medication that elicits a positive emotional response in an experimental subject?

A placebo is used in an experiment as a control. For example, when testing a new medication, experimenters will split the group in two- a control group and an experimental group. The experimental group receives the actual medication, while the control group receives a placebo (in this case, a sugar pill). The placebo will not have any actual effect on the person, but is meant to make sure people aren't making themselves believe that they are cured.


When testing a new drug researchers control for a placebo effect by using?

A placebo effect


What actors and actresses appeared in Placebo Effect - 2012?

The cast of Placebo Effect - 2012 includes: Jessica Dewane as Gabby Rafael Omar Cruz as Dr. Placebo