Certificate In Psychology (CPSY) Practice Exam

At what age is Mari likely to have learned to stack two blocks?

1. 12 months

2. 6 months

3. 18 months

4. 24 months

The correct answer is: 18 months

The age at which a child typically learns to stack two blocks is around 15 to 18 months. At this stage of development, children are refining their fine motor skills and begin to explore basic problem-solving with hands-on activities. Stacking blocks requires hand-eye coordination and the ability to understand balance, which are skills that are still developing in the earlier months, like at 6 months. By the time a child reaches 12 months, they may be able to grasp objects and understands how to manipulate them, but they are generally not yet managing the coordination needed to stack them successfully. By 18 months, most children have gained enough dexterity and cognitive ability to stack one block on top of another, making this age the most accurate choice for when Mari is likely to have learned to stack two blocks. By 24 months, children typically might be able to stack more than two blocks, indicating further development beyond just stacking two. Thus, the choice of 18 months aligns with the general milestones observed in child development.