primary insurance amount which is less than one-half of the primary insurance amount of his wife,

shall be entitled to a husband's insurance benefit for each month, beginning with the first month after August 1950 in which he becomes so entitled to such insurance benefits and ending with the month preceding the month in which any of the following occurs: he dies, his wife dies, they are divorced, or he becomes entitled to an old-age or disability insurance benefit, based on a primary insurance amount which is equal to or exceeds one-half of the primary insurance amount of his wife, or his wife is not entitled to disability insurance benefits and is not entitled to old-age insurance benefits.

(2) The provisions of subparagraph (C) of paragraph (1) shall (subject to subsection (s)) not be applicable in the case of any husband who

(A) in the month prior to the month of his marriage to such individual was entitled to, or on application therefor and attainment of age 62 in such prior month would have been entitled to, benefits under subsection (f) or (h);

(B) in the month prior to the month of his marriage to such individual had attained age eighteen and was entitled to, or on application therefor would have been entitled to, benefits under subsection (d); or

(C) in the month prior to the month of his marriage to such individual he was entitled to, or on application therefor and attainment of the required age (if any) would have been entitled to, a widower's, child's (after attainment of age 18), or parent's insurance annuity under section 5 of the Railroad Retirement Act of 1937, as amended.

(3) Except as provided in subsection (q), such husband's insurance benefit for each month shall be equal to one-half of the primary insurance amount of his wife for such month.

Child's Insurance Benefits

(d) (1) Every child (as defined in section 216(e)) of an individual entitled to old-age or disability insurance benefits, or of an individual who dies a fully or currently insured individual if such child

(A) has filed application for child's insurance benefits, (B) at the time such application was filed was unmarried and (i) either had not attained the age of 18 or was a full-time student and had not attained the age of 22, or (ii) is under a disability (as defined in section 223 (d)) which began before he attained the age of 22, and

(C) was dependent upon such individual

(i) if such individual is living, at the time such application was filed,

or

(ii) if such individual has died, at the time of such death,

(iii) if such individual had a period of disability which continued until he became entitled to old-age or disability insurance benefits, or (if he has died) until the month of his death, at the beginning of such period of disability or at the

time he became entitled to such benefits,

shall be entitled to a child's insurance benefit for each month, beginning with the first month after August 1950 in which such child becomes so entitled to such insurance benefits and ending with the month preceding which ever of the following first occurs—

(D) the month in which such child dies, or marries,

(E) the month in which such child attains the age of 18, but only if he (i) is not under a disability (as so defined) at the time he attains such age, and (ii) is not a full-time student during any part of such month.

(F) if such child was not under a disability (as so defined) at the time he attained the age of 18, the earlier of

(i) the first month during no part of which he is a fulltime student, or

(ii) the month in which he attains the age of 22,

but only if he was not under a disability (as so defined) in such earlier month; or

(G) if such child was under a disability (as so defined) at the time he attained the age of 18, or if he was not under a disability (as so defined) at such time but was under a disability (as so defined) at or prior to the time he attained (or would attain) the age of 22, the third month following the month in which he ceases to be under such disability or (if later) the earlier of— (i) the first month during no part of which he is a fulltime student, or

(ii) the month in which he attains the age of 22,

but only if he was not under a disability (as so defined) in such earlier month.

Entitlement of any child to benefits under this subsection on the basis of the wages and self-employment income of an individual entitled to disability insurance benefits shall also end with the month before the first month for which such individual is not entitled to such benefits unless such individual is, for such later month, entitled to old-age insurance benefits or unless he dies in such month. No payment under this paragraph may be made to a child who would not meet the definition of disability in section 223 (d) except for paragraph (1)(B) thereof for any month in which he engages in substantial gainful activity.

(2) Such child's insurance benefit for each month shall, if the individual on the basis of whose wages and self-employment income the child is entitled to such benefit has not died prior to the end of such

month, be equal to one-half of the primary insurance amount of such individual for such month. Such child's insurance benefit for each month shall, if such individual has died in or prior to such month, be equal to three-fourths of the primary insurance amount of such individual.

(3) A child shall be deemed dependent upon his father or adopting father or his mother or adopting mother at the time specified in paragraph (1)(C) unless, at such time, such individual was not living with or contributing to the support of such child and—

(A) such child is neither the legitimate nor adopted child of such individual, or

(B) such child has been adopted by some other individual. For purposes of this paragraph, a child deemed to be a child of a fully or currently insured individual pursuant to section 216(h) (2) (B) or section 216 (h) (3) shall be deemed to be the legitimate child of such individual.

(4) A child shall be deemed dependent upon his stepfather or stepmother at the time specified in paragraph (1) (C) if, at such time, the child was living with or was receiving at least one-half of his support from such stepfather or stepmother.

(5) In the case of a child who has attained the age of eighteen and who marries

(A) an individual entitled to benefits under subsection (a), (b), (e), (f), (g), or (h) of this section or under section 223 (a), or (B) another individual who has attained the age of eighteen and is entitled to benefits under this subsection,

such child's entitlement to benefits under this subsection shall, notwithstanding the provisions of paragraph (1) but subject to subsection (s), not be terminated by reason of such marriage; except that, in the case of such a mariage to a male individual entitled to benefits under section 223 (a) or this subsection, the preceding provisions of this paragraph shall not apply with respect to benefits for months after the last month for which such individual is entitled to such benefits under section 223 (a) or this subsection unless (i) he ceases to be so entitled by reason of his death, or (ii) in the case of an individual who was entitled to benefits under section 223 (a), he is entitled, for the month following such last month, to benefits under subsection (a) of this section.

(6) A child whose entitlement to child's insurance benefits on the basis of the wages and self-employment income of an insured individual terminated with the month preceding the month in which such child attained the age of 18, or with a subsequent month, may again become entitled to such benefits (provided no event specified in paragraph (1)(D) has occurred) beginning with the first month thereafter in which he

(A) (i) is a full-time student or is under a disability (as defined in section 223 (d)), and (ii) had not attained the age of 22, or (B) is under a disability (as so defined) which began before the close of the 84th month following the month in which his most recent entitlement to child's insurance benefits terminated because he ceased to be under such disability,

but only if he has filed application for such reentitlement. Such reentitlement shall end with the month preceding whichever of the following first occurs:

(C) the first month in which an event specified in paragraph (1) (D) occurs;

(D) the earlier of (i) the first month during no part of which he is a full-time student, or (ii) the month in which he attains the age of 22, but only if he is not under a disability (as so defined) in such earlier month; or

(E) if he was under a disability (as so defined), the third month following the month in which he ceases to be under such disability or (if later) the earlier of—

(i) the first month during no part of which he is a fulltime student, or

(ii) the month in which he attains the age of 22. (7) For the purposes of this subsection

(A) A "full-time student" is an individual who is in full-time attendance as a student at an educational institution, as determined by the Secretary (in accordance with regulations prescribed by him) in the light of the standards and practices of the institutions involved, except that no individual shall be considered a "full-time student" if he is paid by his employer while attending an educational institution at the request, or pursuant to a requirement, of his employer.

(B) Except to the extent provided in such regulations, an individual shall be deemed to be a full-time student during any period of nonattendance at an educational institution at which he has been in full-time attendance if (i) such period is 4 calendar months or less, and (ii) he shows to the satisfaction of the Secretary that he intends to continue to be in full-time attendance at an educational institution immediately following such period. An individual who does not meet the requirement of clause (ii) with respect to such period of nonattendance shall be deemed to have met such requirement (as of the beginning of such period) if he is in full-time attendance at an educational institution immediately following such period.

(C) An "educational institution" is (i) a school or college or university operated or directly supported by the United States, or by any State or local government or political subdivision there

of, or (ii) a school or college or university which has been approved by a State or accredited by a State-recognized or nationally-recognized accrediting agency or body, or (iii) a nonaccredited school or college or university whose credits are accepted, on transfer, by not less than three institutions which are so accredited, for credit on the same basis as if transferred from an institution so accredited.

(D) A child who attains age 22 at a time when he is a full-time student (as defined in subparagraph (A) of this paragraph and without the application of subparagraph (B) of such paragraph) but has not (at such time) completed the requirements for, or received, a degree from a four-year college or university shall be deemed (for purposes of determining whether his entitlement to benefits under this subsection has terminated under paragraph (1) (F) and for purposes of determining his initial entitlement to such benefits under clause (i) of paragraph (1)(B)) not to have attained such age until the first day of the first month following the end of the quarter or semester in which he is enrolled at such time (or, if the educational institution (as defined in this paragraph) in which he is enrolled is not operated on a quarter or semester system, until the first day of the first month following the completion of the course in which he is so enrolled or until the first day of the third month beginning after such time, whichever first occurs).

(8) In the case of

(A) An individual entitled to old-age insurance benefits (other than an individual referred to in subparagraph (B)), or

(B) an individual entitled to disability insurance benefits, or an individual entitled to old-age insurance benefits who was entitled to disability insurance benefits for the month preceding the first month for which he was entitled to old-age insurance benefits,

a child of such individual adopted after such individual became entitled to such old-age or disability insurance benefits shall be deemed not to meet the requirements of clause (i) or (iii) of paragraph (1) (C) unless such child

(C) is the natural child or stepchild of such individual (including such a child who was legally adopted by such individual),

or

(D) (i) was legally adopted by such individual in an adoption decreed by a court of competent jurisdiction within the United States,

(ii) was living with such individual in the United States and receiving at least one-half of his support from such individual (I) if he is an individual referred to in subparagraph (A), for