0 • A • B • C • D • E • F • G • H • I • J • K • L • M • N • O • P • Q • R • S • T • U • V • W • X • Y • Z
Inner experimentation refers to the sixth substage of Piaget’s Sensorimotor stage, the ability to solve simple problems on a mental, or symbolic, level without having to rely on trial-and-error experimentation.