effectance

(psychology) effective interaction with one's environment

Japanese Meaning

環境との効果的な相互作用

Children often build confidence by testing their effectance in playful experiments.

子どもは遊びの実験を通して、環境に効果的に関わる能力を試すことで自信を育むことがよくあります。

Sense（1）

(psychology) effective interaction with one's environment

effectances

（ plural ）