Final answer:
The sociocultural theory is the one that credits cultural values and social constructs for the differences between the sexes, suggesting that gender roles are learned rather than biologically determined.
Step-by-step explanation:
The theory that credits cultural values for differences between the sexes is the sociocultural theory. This theory posits that gender roles and differences are primarily the result of cultural influences and socialization, rather than biological or psychological factors. The cultural roles of gender assign behaviors, responsibilities, and rights differently to people based on their genders and these categories are learned and variable across cultures. Cultural anthropologists focus on how ideas of gender are formed in society, considering factors like sociocultural norms, institutional influences, and everyday practices. The specific content of gender roles can change over time and differ from one culture to another, indicating that the influence of culture is significant in the formation of gender differences. Thus, gender equality and the diversity of expressions of sexuality and gender roles are often the result of sociocultural factors rather than innate biological instincts or evolutionary pressures.