In experiments, what is the purpose of a control?

In experiments, the purpose of a control is to provide a standard of comparison. This means that the control group remains unchanged and is not subjected to the experimental treatment or variable being tested. By having this baseline, scientists can observe the effects of the independent variable more clearly. It allows researchers to determine whether the changes observed in the experimental group are truly due to the treatment or if they could have happened naturally without any intervention.

Having a control helps establish a causal relationship between the dependent and independent variables, ensuring that any observed effects can be attributed to the treated conditions rather than other external factors. The control thus plays a crucial role in validating the results of an experiment and in drawing accurate conclusions from the data collected.