The juvenile in this case was charged with being delinquent by reason of rape and abuse of a child under sixteen years of age in violation of G. L. c. 265, § 23 (1990 ed.). See G. L. c. 119, § 52 (1990 ed.). At the time of the incident, the juvenile was thirteen years old, and the female victim was eleven years old. The Commonwealth alleged that the juvenile used force, or threat of force, to penetrate the victim’s vagina with his penis.
Under English common law, a child under fourteen years of age was conclusively presumed incapable of committing rape. See
Commonwealth
v.
A Juvenile,
Most American jurisdictions have rejected the conclusive presumption and adopted instead a rebuttable presumption.
A Juvenile, supra
at 452. See also
People
v.
Wessel,
The juvenile in this case argues that Massachusetts case law clearly establishes that the conclusive common law presumption has been adopted by this court. He focuses on two cases,
Commonwealth
v.
A Juvenile,
In
Green,
the defendant, a child under the age of fourteen, was charged with assault with intent to commit rape.
Id.
at 381-382. This court held that the defendant could be prosecuted for that offense even though it stated in dictum that “by an artificial rule he is not punishable for the crime itself.”
Id.
at 382. Without expressly adopting the English common law conclusive presumption that a boy under fourteen years was incapable of rape, the court stated: “The law which regards infants under fourteen as incapable of committing rape, was established
in favorem vitae,
and ought not to be applied by analogy to an inferior offence [assault with intent to commit rape], the commission of which is not pun
Thus, we have referred to the common law presumption, but we have never applied it, nor have we examined its purported justifications. We conclude that there is no sound legal or medical basis for a presumption that an individual under fourteen is incapable of rape, as defined at common law. Whatever basis the original justifications for the presumption once had, they are inapplicable today.
To the extent the common law presumption rested on an assumption that males under the age of fourteen were not sexually mature, current medical information suggests otherwise. See Stedman’s Medical Dictionary 1289 (25th ed. 1990) (“puberty” is sexual maturation, commencing in boys between ages ten and twelve). Over the past century, the onset of puberty has gradually occurred at a younger age, and currently begins between the ages of ten and twelve. See S.R. Ambron & N.J. Salkind, Child Development 468 (4th ed. 1984).
We recognized in
A Juvenile
that, since sexual maturity was not rationally connected to a juvenile’s capacity to commit acts of unnatural intercourse, a presumption based on the age of sexual maturity ought not to apply to digital rape.
A Juvenile, supra
at 453. In 1824, the
Green
court recognized that the presumption was “artificial.”
Green, supra
at 382. See also
Commonwealth
v.
Lewis,
We must also determine whether we announce a new rule requiring prospective application. See
Commonwealth
v.
So ordered.
Notes
Common law rape is defined as “the penetration of the female sex organ by the male sex organ, with or without emission.”
Commonwealth
v.
Gallant,
Juveniles charged with certain crimes may be transferred to the adult system, see G. L. c. 119, § 61 (1990 ed.); Commonwealth v. Wayne W., ante 218 (1993), but only if they are over fourteen years of age. G. L. c. 119, § 61.
We are guided today by our decision in
Commonwealth
v.
Lewis,
