Chimpanzees and other great apes seem to be much less cooperative than humans overall, yet they nevertheless reliably help others in many instrumental circumstances. Although in many contexts the helping behavior of chimpanzees is quite similar to that of human children, recent studies using both behavioral and psychophysiological paradigms have…

Our research examined the use of supplementary materials in six environmental science disciplines: atmospheric sciences, biology, fisheries, forestry, geology, and plant sciences. Ten key journals were selected from each of these disciplines and the number of supplementary materials, such as data files or videos, in each issue was noted over a…

We introduce the thematic collection by noting some striking similarities in the cognitive abilities of human infants and nonhuman primates. What are the implications of these similarities for our comprehension of human infant cognition? After providing a brief historical and conceptual background on comparative behavioral research, we discuss how…