The weaknesses of Piaget’s cognitive development theory are as follows:

1. The theory faces some issues when it comes to formal operations.
2. Many research studies dispute the theory stating that not all children develop from one stage to another.
3. Few researchers state that development takes place in a continuous process and not in stages.
4. Research shows that environmental factors can influence children’s formal development.
5. Many findings state that Piaget’s theory is based on the observation of a few children and not the entire population.

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