Question

A biologist conducted an experiment on the effect of feeding time on the development of crickets. He used three groups of crickets, with 10 crickets in each group. He fed the first group of crickets in the morning, the second group in the afternoon, and the third group at night. Not only that, but he later recorded the number of weeks it took the crickets to fully develop.
Which of the following would improve his experiment?

feeding the crickets different types of food

having one cricket in each group instead of 10

using crickets that are all the same age to begin with

using other insects besides crickets

Answers

GPT-4o mini
To improve the biologist's experiment, the best option would be:

**using crickets that are all the same age to begin with.**

This ensures that any differences in development can be more confidently attributed to the feeding time rather than age-related variations in growth and development. The other options could introduce confounding variables or reduce the reliability and statistical power of the results.