Final answer:
The belief that gender patterns of aggressiveness and sociability are purely inborn is false. Current research shows that these behaviors are significantly influenced by cultural and social factors, and that gender roles are largely learned through the process of socialization.
Step-by-step explanation:
The statement that solid evidence shows that gender patterns of aggressiveness and sociability are inborn is False. Research indicates that while there are some biological underpinnings to behavior, cultural and social factors have a significant influence on the expression of aggression and sociability. The notion that boys are inherently more aggressive than girls has been challenged by studies that show the impact of socialization and cultural expectations on behavior. For example, anthropologist Carol Ember's studies in Kenya demonstrated that social roles can significantly influence levels of aggression. Boys tasked with traditionally 'feminine' roles exhibited up to 60% less aggression. This suggests that environmental factors play a crucial role in shaping behavior, and that gender roles are largely learned through socialization. Moreover, the human sex differences in behavior, including aggression, are not solely determined by innate characteristics but are a complex interplay of genetics, environmental factors, and social learning. The historical perspective that gender roles are biologically determined has been criticized for being overly simplistic and ignoring the cultural script that directs how individuals are expected to behave according to their gender. Hence, the argument for inborn gender patterns of behavior does not hold up to the current understanding of the multifaceted nature of human development.