Final answer:
Factors such as cross-cultural variability, earlier achievement of cognitive milestones, and the continuous model of development question the strict stages proposed in Piaget's theory of cognitive development.
Step-by-step explanation:
Some factors that question Piaget's theory of cognitive development include:
- Cross-cultural variability in cognitive milestones: Piaget predicted universal stages of cognitive development, but research has shown that there is variability in how and when these milestones are reached across different cultures.
- Earlier achievement of cognitive abilities: Studies have provided evidence that certain cognitive milestones are reached earlier than Piaget had described, questioning the strict age-related stages of his theory.
- Continuous model of cognitive development: Contemporary research supports a more continuous model of cognitive development, as opposed to Piaget's notion of distinct, discontinuous stages.
These factors suggest that children's cognitive development may not follow the uniform, step-by-step process Piaget proposed. Instead, development appears to be more fluid and influenced by a broader range of factors, including cultural contexts and early understanding of concepts previously thought to be beyond young children's grasp.