Questions: What did the Update on the Marshmallow Test find about differences in children's ability to resist the marshmallow? Kids' social background influences their self-control Kids' economic background influences their self-control Neither of the above Both A and B

The answer is Both $A$ and $B$

Research has shown that a child's social environment, including factors such as parental influence, peer interactions, and cultural norms, can significantly impact their ability to exercise self-control. Children who grow up in environments that emphasize delayed gratification and self-regulation are more likely to develop these skills.

Economic background can also play a crucial role in a child's ability to resist immediate temptations. Children from economically disadvantaged backgrounds may have different experiences and pressures that affect their self-control. For instance, they might be more accustomed to uncertainty and scarcity, which can influence their decision-making processes and ability to delay gratification.

The Update on the Marshmallow Test suggests that both social and economic backgrounds are influential in shaping a child's self-control abilities, supporting the idea that both factors are important.