Factors that can be changed in an experiment
http://infohost.nmt.edu/~klathrop/controlled_experimnet.pdf
In an experiment, there are several factors that can be changed or manipulated. These factors are known as independent variables and they play a crucial role in determining the outcome of the experiment. Here are some common factors that can be changed in an experiment:
1. Treatment or intervention: This refers to the specific action or condition that is applied to the experimental group but not to the control group. For example, in a study examining the effects of a new drug, the treatment would be administering the drug to the experimental group.
2. Time: The duration or timing of the experiment can be altered. This could involve changing the length of the experiment or the schedule at which measurements are taken.
3. Environmental conditions: Experimenters may alter the conditions in which the experiment takes place. This could involve adjusting the temperature, humidity, lighting, or other environmental factors that may impact the results.
4. Concentration or dosage: If the experiment involves administering substances such as drugs or chemicals, the concentration or dosage can be modified to examine different effects.
5. Variables under study: Depending on the research question, different variables can be manipulated. For example, in a study on plant growth, variables such as water, sunlight, or fertilizers could be adjusted.
It is important to note that while these factors can be changed in an experiment, it is also critical to control other variables that may influence the outcome. These controlled variables, known as constants, are kept consistent throughout the experiment to ensure that any differences observed are due to the independent variables being manipulated.