Rating criteria. Rating determinations will be made solely on the basis of whether the child is permanently incapable of self-support through his own efforts by reason of physical or mental defects. The question of permanent incapacity for self-support is one of fact for determination by the rating agency on competent evidence of record in the individual case. Rating criteria applicable to disabled veterans are not controlling. Principal factors for consideration are:
(1) The fact that a claimant is earning his or her own support is prima facie evidence that he or she is not incapable of self-support. Incapacity for self-support will not be considered to exist when the child by his or her own efforts is provided with sufficient income for his or her reasonable support.
(2) A child shown by proper evidence to have been permanently incapable of self-support prior to the date of attaining the age of 18 years, may be so held at a later date even though there may have been a short intervening period or periods when his or her condition was such that he or she was employed, provided the cause of incapacity is the same as that upon which the original determination was made and there were no intervening diseases or injuries that could be considered as major factors. Employment which was only casual, intermittent, tryout, unsuccessful, or terminated after a short period by reason of disability, should not be considered as rebutting permanent incapability of self-support otherwise established.
(3) It should be borne in mind that employment of a child prior or subsequent to the delimiting age may or may not be a normal situation, depending on the educational progress of the child, the economic situation of the family, indulgent attitude of parents, and the like. In those cases where the extent and nature of disability raises some doubt as to whether they would render the average person incapable of self-support, factors other than employment are for consideration. In such cases there should be considered whether the daily activities of the child in the home and community are equivalent to the activities of employment of any nature within the physical or mental capacity of the child which would provide sufficient income for reasonable support. Lack of employment of the child either prior to the delimiting age or thereafter should not be considered as a major factor in the determination to be made, unless it is shown that it was due to physical or mental defect and not to mere disinclination to work or indulgence of relatives or friends.
(4) The capacity of a child for self-support is not determinable upon employment afforded solely upon sympathetic or charitable considerations and which involved no actual or substantial rendition of services.