Ann Senghas's research with deaf children in Nicaragua supported the idea that __________
A. sign languages are less complex than spoken languages
B. there is a critical developmental stage for acquiring the rules of language
C. sign languages are universal
D. spoken language evolved from primitive gestural forms of communication
Answer: B
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Men in the United States are better paid than women, even though the gap has been narrowing in recent decades
a. True b. False
Which of these is an advantage of cultivation over foraging?
a. It can support a higher population density. b. It takes less time and energy. c. It alters the natural environment less. d. It supports a higher quality of life.
Compared to plesiadapiforms, adapoids and omomyoids have more stereoscopic vision
a. True b. False
Oldowan pebble tools
A. are obviously manufactured stone tools that consist of flakes and cores. B. include elaborate axes and spears. C. contain evidence that they were used on fellow hominins, providing the earliest evidence of human warfare and cannibalism. D. were also used to decorate burial sites, suggesting very early symbolic thought. E. were found at the same site and stratigraphic layer as the Ardipithecus kadabba fossils, dramatically pushing back in time the onset of stone tool use to the late Miocene.