In Ayres' model, when is Phase 2 typically observed?

• A. First month
• B. Third year
• C. Adolescence
• D. Second year of life

Answer: (D)

Phase 2 in Ayres’ sensory integration model occurs as children begin to move beyond basic reflexive responses and start integrating multisensory input to support purposeful action. This stage typically appears in the second year of life, when toddlers are developing more stable postural control, balance, and motor planning as they stand, walk, and explore their environment. The vestibular and proprioceptive systems begin to work together with tactile input to organize movement and adaptive responses, enabling coordinated reaching, climbing, and navigating varied contexts.

Choosing timing earlier than the second year, such as the first month, would be too early for the level of multisensory integration and motor organization seen in Phase 2. Later ages like the third year or adolescence reflect stages of more advanced integration that build on Phase 2.