Also noteworthy is her introductory chapters, which detailed methods of interpreting the results of animal research. Although she was cautious about attributing anthropomorphic meanings to animal behavior and realized that animal consciousness could never be directly measured, she opposed strict behaviorism's dismissal of consciousness and sought to comprehend as much as possible about animal mental phenomena. She suggested that animal psyches contained mental structures similar to that of humans and therefore suggested animal consciousness is not qualitatively different from human mental life. The greater the similarity in neuroanatomical structure and behavior between animals and humans, the more consciousness could be inferred. In her words: