Second stage in the adaptation of schema. In our bus example (see Organisation) accommodation occurs when the toddler forms new schema to accommodate similar stimuli to 'bus'. Such as a schema for lorries, tractors, caravans etc. What this means in a practical sense is that when the toddler sees a bus he/she says 'Bus'. A lorry, 'Lorry' etc. Accommodation helps us discriminate and make a specific interpretation of stimuli in our world. Piaget said that the process of adaptation of schema occurs because of imbalance. When we initially assimilate schema we are in a state of disequilibrium or imbalance. Our general interpretation of our world just isn't right. A lorry etc. isn't a bus! This discomfort sees us moved to accommodate the assimilated schema better. When done, we are in a state of balance, or equilibrium about the stimuli in our world.
Up to middle age, the eye has the ability to increase the curvature of the crystalline lens, a process called accommodation, and thereby increase its overall optical power. Correction outside of this requires spectacles or contact lenses.