The impact of having more children on parents’ parenting skills can vary widely depending on numerous factors such as individual parental capabilities, socioeconomic conditions, support systems, and family dynamics. However, some research and observations provide insights into this complex issue:

1. Resource Dilution Hypothesis: This theory suggests that the more children there are in a family, the fewer resources (time, money, attention) each child receives. This can sometimes lead to less individual attention and support for each child, potentially affecting parenting quality.
2. Experience and Adaptation: On the other hand, parents often gain experience and confidence with each additional child, potentially improving their parenting skills. They may become more efficient in managing household tasks and understanding child development.
3. Parental Fatigue: Raising multiple children can be exhausting, and parents might experience increased fatigue and stress, which could negatively impact their parenting effectiveness.
4. Older Siblings’ Influence: In larger families, older siblings often take on caregiving roles, which can provide additional support for younger children but might also shift some parental responsibilities away from the parents.
5. Individual Differences: Not all parents respond to having more children in the same way. Some thrive and become more skilled, while others might struggle more with the increased demands.
   Studies have shown mixed results. Some suggest that firstborns receive more cognitive and emotional resources, which might lead to differences in outcomes compared to their younger siblings. However, other studies indicate that siblings can benefit from social interactions and support within a larger family.
   Overall, while there are general trends and theories, the effect of having more children on parenting skills is highly individualized and influenced by various factors.