The Table Above Is a Comparison of Several Characteristics of H.floresiensis

question 22

Multiple Choice

The table above is a comparison of several characteristics of H.floresiensis to those of nine other hominin species (arranged roughly from oldest to most recent) .What do these data suggest?

• A)A large brain is not necessarily required for toolmaking.
• B)Body mass and braincase volume are completely unrelated.
• C)The African environment tends to depress braincase volume and body mass.
• D)Hominins first evolved in and then radiated out from Asia.
• H)floresiensis is most closely related to Australopithecus afarensis or A.africanus.

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Definitions:

Group Polarization

The phenomenon where the attitude of a group becomes more extreme than the initial attitude of its members following group discussions.

Outgroups

Groups of people not belonging to the main or dominant group, often perceived as different or outside the main group.

Group Polarization

The tendency for a group to make decisions that are more extreme than the initial inclination of its members, often observed following group discussions.

Reinforcement

In behavioral psychology, a process by which a behavior is strengthened or made more likely to occur again by rewards or consequences.