imitate, follow, emulate
傚 centers on modeling one's actions after another: to imitate, follow, or emulate a pattern or person.
傚 combines 亻 (person) with 效, which likely contributes both sound and the idea of imitating or following a model.
A person 亻 beside 效, which suggests copying or modeling. Picture someone watching a master and carefully imitating every move.
For コウ, imagine a person imitating a coach's call: 'Go!' The coach's 'Go!' cues コウ, and the person follows the instruction.