• Continued infant-like behavior
  • Decreased learning ability
  • Failure to meet the markers of intellectual development
  • Inability to meet educational demands at school
  • Lack of curiosity
Note: Changes to normal behaviors depend on the severity of the condition. Mild retardation may be associated with a lack of curiosity and quiet behavior. Severe mental retardation is associated with infant-like behavior throughout life. Type in the content of your page here.