Final answer:
According to the normative approach, it is not a cause for concern if a 3-year-old is not yet potty trained as each child develops at their own pace.
Step-by-step explanation:
Based on the normative approach, you should not be concerned about your 3-year-old daughter not being potty trained yet. According to the developmental milestones for her age, it is considered normal for children to still be in the process of learning to use the toilet. Each child develops at their own pace, and it is common for some children to take longer to achieve this milestone. It is important to be patient and provide support and encouragement during this stage of development.