noun
attachment theory
A psychological term referring to the theory of emotional bonding, especially between infants and caregivers.
愛着理論は、幼児期の親子関係の重要性を説明する。
Attachment theory explains the importance of parent-child relationships in early childhood.
Compound of 愛着 (あいちゃく, 'attachment') and 理論 (りろん, 'theory'). The term is a direct translation of the English 'attachment theory'.