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Which is the best method available for controlling placebo effects in both the subject and the experimenter?
Wiki User
∙ 14y ago
Double blind conditions
Wiki User
∙ 14y ago
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What is an inert substance given to the control group and has no effects on the group?
A placebo
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.
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 type of experiment is it when only the subject does not know it they are receiving the real treatment of the placebo?
If the experimenters know but the subject does not, it's called a "single blind" study. If the placebo is randomized and neither the subject nor the experimenters know which is the placebo, it's called a "double blind" study.
What is a placebo variable?
A placebo is a treatment, most commonly a medication of some kind, which is given to a subject with the pretense that it will treat a specific ailment when in fact the treatment will have no significant effect on the subject. The subject may report that the treatment has had a positive effect, when in fact the effect is entirely in the imagination of the subject. Therefore, a placebo variable is a factor that researchers in the medical field must consider when experimenting with new treatments, to decide whether the success of the treatment is due to the psychological or placebo effect of the treatment, or if the treatment itself is working.
What is the best method available for contrllind placebo effects in both the subject and the experimenter?
Double Blind condition
How do you know if you received a placebo medication?
Although it is hard to tell exactly if you are given a placebo or not, here are some ways that may help: Placebo medications usually will not produce side effects. If you are experiencing no side effects while an active medication probably would produce side effects, then you may have received a placebo. If the desired effects are not occurring, then you may have received a placebo.
What is a sentence containing the word placebo?
The doctor prescribed a placebo to the patient in order to study the effects of the medication.
What is a placebo group included in clinical trials?
to see the side effects
What is an inert substance given to the control group and has no effects on the group?
A placebo
A scientist is giving patients a sugar pill that has not medical properties what is this pill called?
A medication given in research that has no medical properties is called a placebo
What is the difference between the placebo effect and nocebo effect?
The "placebo effect" refers to positive benefits from inactive substances. The "nocebo effect" refers to negative effects of inactive substances.
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.
What would A scientist who wants to study the possible side effects of a new medicine do?
placebo: a method to investigate of drugs.
An inert substance that may be administered instead of a drug to see if it produces any of the same effects as the drug is called a?
Placebo
What does placebo mean in Russian?
A placebo.
Is it ethical to use placebo in clinical trial what is your opinion and what do cioms and ich guidelines mention in this regard?
Placebo is a dose of an inactive pill or other type of drug, used in drug testing to control for psychological effects of taking medicine. Its use is debated in clinical trials, but the practice of prescribing placebo for patients is far more controversial.
