Birth–18 months12–14 years18 months–6–9 years9–12 years6 yearsSTAGES OF DEVELOPMENT IN H.S. SULLIVAN’S INTERPERSONAL THEORYJuvenilePreadolescenceChildhoodEarly adolescenceInfancy Learning to experi-Learning to form Learning to form Learning to form Relief from anxi-satisfactory needsfisatisfactory peer relationshipssatisfactory re-gratifiundue anxietypersonal grati-relationships with persons of the same gender; the initiation of feelings of affec-tion for another personety through oral ence a delay in lationships with cation without cation of
14–21 years Late adolescence Establishing self-identity; experi-relationshipposite-gender intimate op-develop a lasting, encing satisfying relationships; working to opposite gender; sense of identitydeveloping a persons of the
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