A scientist investigates the toxic effects of a chemical on the brain what experimental design elements would most likely lead to inconsistent results?

Answer 1

Inconsistent results in a study investigating the toxic effects of a chemical on the brain may arise from factors such as small sample sizes, inadequate control groups, variability in dosages administered, or lack of randomization in assigning subjects to different treatment groups. Additionally, variations in the timing of data collection, differences in experimental protocols, or biases in data analysis could also contribute to inconsistent results. To minimize these potential sources of variability, the scientist should carefully design the study with appropriate sample sizes, control groups, randomization procedures, standardized dosages, and consistent data collection methods.