Socially and politically, the consequences of these two theories are far-reaching. In the US£¬for example, blacks often score below whites on standardized intelligence tests. This leads some “nature” proponents to conclude that blacks are genetically lower in status than whites. Behaviorists, on the contrary, say that the differences in scores are due to the fact that blacks are often robbed of many of the educational and other environmental advantages that whites enjoy, and that, as a result, they do not develop the same responses that whites do.

Neither of these theories can yet fully explain human behavior. In fact, it is quite likely that the key to our behavior lies somewhere between these two extremes and that the controversy will continue for a long time is certain. 

¡¾Ð¡Ìâ1¡¿This passage is mainly concerned with ________.

A. relation between personality and behavior

B. relation between behavior and environment

C. different accounts of patterns of human behavior

D. different theories of the formation of human behavior