How can you make sure experiments are unbiased?

To ensure experiments are unbiased, it's essential to use randomization in the selection of participants and the assignment of treatments. Blinding, where participants and/or researchers are unaware of group assignments, can help eliminate expectations that may influence outcomes. Additionally, employing a control group allows for comparison against the experimental group, helping to isolate the effects of the treatment. Finally, pre-registration of study protocols can enhance transparency and reduce the risk of selective reporting.