Final answer:
Research suggests that same-sex parents are as effective as opposite-sex parents. Gender can influence spending decisions, with studies showing that when mothers control a larger share of household income, families tend to spend more on certain items. Sibling relationships can have an impact on socialization and well-being.
Step-by-step explanation:
Research suggests that the impact of siblings of the same sex versus opposite sex depends on various factors. When it comes to parenting, studies indicate that same-sex parents are as effective as opposite-sex parents. In terms of spending decisions, gender can play a role, with studies suggesting that when mothers control a larger share of household income, families tend to spend more on certain items such as child care and women's clothing. Additionally, sibling relationships can play a significant role in socialization and well-being.