Positive vs Negative Control | Key Differnce
Key difference - Positive Vs negative control
Scientific experiments are always carried out using instruments to obtain reliable results. The results obtained during the experiment can be critically compared, analyzed and explained with respect to the management and treatment. Therefore, it is extremely important to maintain administrative efforts and should be included in the experimental design to increase the statistical value of the database. There are two types of governance that are called positive control and negative control. Negative and positive criteria are defined by variables or treatments during the experiment. Positive management is experimental analysis that delivers the effects the researcher expects. Negative control is experimental therapy that does not produce the desired effects of the experimental variable. This is the key difference between positive and negative Control.
What is a positive control?
Positive management is experimental control that gives a positive result. It does not have the independent variable that the examiner tests. However, it shows the expected effect expected from the independent variable. Positive control is useful evidence to show that protocols, reagents and equipment work well without mistakes. If experimental errors occur, positive control will not yield the correct result. Therefore, investigators can analyze and optimize the procedure without wasting time, effort and money. For example, when plant extract is tested for antimicrobial properties in an experiment with antimicrobial compound, a known antimicrobial containing solution is used as a positive control.
What is Negative Control?
Negative monitoring does not provide a response to treatment. In experiments, negative control should be designed in such a way that it does not produce the desired results of the experiment. In the example above, the paper disc used as a negative control should be soaked with sterile distilled water. In sterile distilled water, there is no antimicrobial agent. Therefore, bacteria can grow without hindrance. If any negative control is detected, it indicates that something is wrong with the experiment.
What is the difference between positive and negative supervision?
Positive vs. Negative Monitoring
Positive management is an experimental treatment performed with known factors to get the desired effect of the treatment.
Negative control is experimental analysis that does not deliver the desired results of the experiment.
importance
Positive management is an important part of experimentation.
Negative control is also an important part of the experiment
Reliability of the experiment
Positive management increases the reliability of the experiment.
Negative monitoring increases the reliability of the experiment.
Summary - Positive vs. Negative Control
Controls are important components of the experiment. They are maintained in scientific experiments to eliminate experimental errors and bias. Reference test results are useful in validating statistical analysis of the experiment. Therefore, the reliability of the experiment can be enhanced with management methods. Positive management shows the expected effect of the treatment. Negative monitoring does not show the effect of the treatment. This is the difference between positive and negative control. An experiment with a control device is known as a controlled experiment. Positive and negative experiment control tools ensure that the experiment was performed correctly and the result of the experiment affects an independent variable.
