How did bigger brains and bipedalism affect Homo sapiens' development?

What will be an ideal response?


To allow for the birth of bigger-brained babies, the female Homo sapiens' pelvis became relatively wide. However, bipedalism (walking on two legs) simultaneously required pelvises narrow enough for stable walking and running. Thus human children are born at an earlier stage of brain development relative to other African great ape species. The human infant's brain is merely 25% of adult size at birth and does not reach approximately 85% to 90% until 6 years of age.

Psychology

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________ well-being involves an evaluation of one's life that is associated with positive feelings

a. Subjective b. Objective c. Intrinsic d. Extrinsic

Psychology

Once adults pass their physical peak in their twenties, most will experience:

a. a rapid, steady decline in all areas of physical function b. no noticeable declines in any area of physical function c. slow, steady improvements in physical strength and stamina d. a slow, steady decline in all areas of physical function

Psychology

How well do infant developmental tests, such as the Bayley Scales, predict later IQ?

a. Poorly, because DQ and IQ measure different abilities b. Moderately well c. Very well d. Extremely well; DQ and IQ measure the same abilities

Psychology

____________________ is the study of morals and moral choices.

Fill in the blank(s) with the appropriate word(s).

Psychology