Galpayage and co-workers disinfected the wooden balls after each experiment. If they had not included this step, how might this have impacted their interpretation of the data?

Contamination refers to the introduction of unwanted substances or organisms into an experimental setup. In biological experiments, if the wooden balls were not disinfected, residual microbes from previous experiments could skew results, leading to inaccurate interpretations of the data. This could result in false positives or negatives, affecting the reliability of the findings.

Experimental control is a fundamental principle in scientific research that involves keeping all variables constant except for the one being tested. By disinfecting the wooden balls, the researchers ensured that any observed effects in their experiments could be attributed solely to the variables of interest, rather than to external factors like contamination, thus enhancing the validity of their conclusions.

Data integrity refers to the accuracy and consistency of data collected during an experiment. If the wooden balls were not disinfected, the integrity of the data could be compromised due to the influence of contaminants. This could lead to misleading results, making it difficult to draw reliable conclusions and potentially undermining the overall credibility of the research.