Human Phenotype Ontology 
Parent Node:
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Abnormal social behavior (HP:0012433)help
Parent Node:
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Neurodevelopmental delay (HP:0012758)help
..Starting node
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Delayed social development (HP:0012434)help
Term ID:12434
Name:Delayed social development
Definition:A failure to meet one or more age-related milestones of social behavior.
Comments:
Reference:HP:0012434
MSeqDR-LSDB(LS)
& Disease (OMIM):
                  super
       Child Nodes:

 Sister Nodes: 
..expandDelayed speech and language development (HP:0000750) help
..expandGlobal developmental delay (HP:0001263) help
..expandMotor delay (HP:0001270) help
 

Human Phenotype Ontology(HPO) is developed by the Human Phenotype Ontology Consortium.