Familial Retardation, also called socio-cultural or cultural-familial retardation, refers to a state of mild mental retardation that is believed to be the result of environmental factors, usually related to some types of psychosocial disadvantages; lack of prenatal care, impoverished circumstances, poor diet, lack of intellectual stimulation and opportunity, etc. rather than an identifiable physiological or neurological reason. This type of retardation, generally noted as an all-around slowness is not usually noted prior to a child starting school.