Do the following traits/ behaviors best characterize humans, chimps, or both?

Have longer birth intervals
[ Select ]
Humans
Chimps
Both

Question

Do the following traits/ behaviors best characterize humans, chimps, or both?

Have longer birth intervals 
[ Select ]
Humans
Chimps
Both

BlackTom AI · Accepted Answer

In this item, the trait presented is “Have longer birth intervals.” The task is to decide whether this trait best characterizes Humans, Chimps, or Both.

If the options are Humans, Chimps, and Both (as is typical for this kind of question), we can reason about each choice:

Option: Humans
- Rationale: Across primates, humans typically exhibit longer interbirth intervals than many nonhuman primates. Factors such as extended care of offspring, longer developmental periods, and complex social structures contribute to longer times between births. Therefore, labeling this trait as characteristic of Humans aligns with general anthropological and primatological observations.

Option: Chimps
- Rationale: Chimps generally have relatively shorter interbirth intervals compared to humans. While exact numbers can vary by population and measurement, chimpanzees tend to have birth intervals on the order of a few years, which is typically shorter than the extended interval seen in humans. Saying Chimps have longer birth intervals would contradict established data.

Option: Both
- Rationale: If this were true, both species would share similarly long birth intervals. However, the substantial cross-species differences in life history strategies (such as weaning age, maternal investment, and developmental timelines) indicate that the interbirth interval is not equally long in both. Thus, this option would be misleading given the general pattern.

Putting it together: since Humans are the group commonly described as having longer birth intervals relative to nonhuman primates like chimps, the statement most plausibly and accurately points to Humans. The reasoning above contrasts the expected primate patterns and makes it clear why Chimps or Both would be less accurate characterizations for this trait.

ANTH 1050-090 Fall 2025 Exam 2

Do the following traits/ behaviors best characterize humans, chimps, or both? Have longer birth intervals [ Select ] Humans Chimps Both

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