This is аn appeal from a conviction of two counts of incest pursuant to D.C.Code 1981, § 22-1901. Appellant argues (1) that the *356 preindictment delay violated his constitutional rights; (2) that the two counts of incest were improperly joined; and (3) that the trial judge erred in failing to instruct the jury, sua sponte, that corroboration of the testimony оf the complainant was required. 1 After careful consideration of these claims in light of the record before us, we find them unpersuasive and accordingly affirm the convictions.
I
At trial the complainant testified that in the early part of 1974, she was living with her mother, Caroline Banks, and her two stepsisters in Southeast Washington. Accоrding to her testimony, during that time, when she was approximately 16 years old, her father, Gary Robinson, appellant herein, had sexual relations with her on three occasions. Then in June 1975, she left her mother’s apartment and moved in with her father, who, she testified, engaged in sexual intercourse with her “[wjhenever he felt like it.” On August 23, 1975, as the complainant was walking home one evening with her boyfriend, her father approached them and started beating both her and her boyfriend. Robinson then took her to his house and forced her to have relations with him that night and again the next morning. On August 24, 1975, she told her aunt and her mother what had occurred and her mother called the police. Appellant was arrested on August 25, 1975, but released the following day when the United States Attorney’s Office “no papered” the charge.
The complaining witness then returned to her father’s residence where she lived for approximately four years and continued a sexual relationship with him. On August 14,1979, when she was living with her aunt, she went to Howard University Hospital because she suspected she was pregnant. She testified that she had recently submitted to her father approximately one week earlier. A member of the hospital staff prescribed medicine and told her to return the following day for a test, which she did. She also asked to see a рsychiatrist or social worker because she wanted to kill herself. After she talked with two nurses about her relationship with her father they called the police.
The complainant’s mother, Caroline Banks, testified that on August 24, 1975, her daughter came over to her house “real nervous and crying and shaking” and had a black eye and bruises on her shoulder. Ms. Robinson told her mother that her father had had sexual intercourse with her two days earlier. Ms. Banks also testified that several years later in August 1979, her daughter came to her house after visiting Howard University Hospital, where she had received some pills. She had lost a lot of weight and said that she did not want to continue living with her father. She explained to her mother that she had told the people at the hospital, “[I]f somebody don't help me, ... I will probably wind up killing myself.” Ms. Banks encouraged her daughter to return to the hospital the next day.
Two employees of the hospital testified that Ms. Robinson, appearing nervous and frightened, had visitеd the hospital on August 14, 1979, and told them her father was forcing her to have sexual relations with him. An employee then contacted the police.
Robinson testified in his own behalf that he believed the complainant was his daughter. He denied that he had engaged in any sexual relationship with her. He explained that walking home with his сousin on the evening of August 24, 1975, he encountered his daughter with a young man. He shoved the young man and told him to stay away from his daughter, then grabbed his daughter and hit her when he thought she was lying to him. She ran to the house where Robinson caught up with her and argued with her. Then she went to her bedroom. He and his cousin sat on the porch drinking beer and then went tо bed. The next morn *357 ing Robinson took his cousin home to Vienna, Virginia. He also explained that on August 8, 1979, he had left the house early in the morning with his friend, Sarah Briggs. He thought that the reason he was arrested for the first incident was that Ms. Banks had wanted to have him return a Cadillac that she had once given him and “have [him] locked up for a while.” Robinson’s cousin corroborated Robinson’s testimony concerning the events of August 23-24, 1975. Ms. Briggs testified that she was Robinson’s “woman” and had spent the night of August 7-8, 1979, with him and had left early the next morning with him.
II
First, appellant contends that the period of delay between the first incident, known to the government on August 24, 1975, and his subsequent indictment for that offense over four years later on December 12, 1979, violated his Sixth Amendment right to a speedy trial. While this period merits scrutiny, appellant mistakenly pursues a Sixth Amendment analysis. As the Supreme Court recently held, the period between dismissal of the first charge against a defendant and indictment falls outside the speedy trial clause.
United States v. MacDonald,
- U.S. -,
Thus, Marion makes clear that proof of prejudice is generally a necessary but not sufficient element of a due process claim, and that the due process inquiry must consider the reasons for the delay as well as the prejudice to the аccused.
Appellant asserts that he suffered prejudice from the obvious difficulty to him and to possible defense witnesses of trying to recall events that occurred 54 months previously. However, he fails to name any specific witnesses whose memories have faded or who are no longer available, and, in faсt, fails to indicate any specific examples of prejudice. The bare assertion that faded memories of witnesses must necessarily have resulted from a lengthy delay is insufficient to establish prejudice.
United States v. Marion, supra
The government argues that its reason for the delay in the indictment of Robinson for the August 23-24, 1975, offense was to develop additional evidence. It was asserted at the pretrial hearing on the motion to dismiss this count that the complainant recanted her grand jury testimony concerning this incident after the police arrested Robinson for it. It was not until his daughter testified before the grand jury investigating the August 1979, incident that the grand jury chose to indict him for both offenses. To avoid charging an innocent person, the government, of course, may proceed cautiously and carefully with arrest or indictment.
See Lovasco v. United States, supra
Ill
Next, appellant argues that join-dеr of the two charges was improper.
2
We have consistently recognized a presumption in favor of joinder of offenses of a similar character to conserve state funds, limit inconvenience, and avoid delay.
(Thomas) Arnold v. United States,
D.C.App.,
In this case we conclude that the evidence of each offense is separate and distinct. The charges concern events four years apart for which the circumstances were distinctly different and for which separate evidence was presented to the jury. Since it is unlikely that the jury would amalgamate the evidence of the offenses to convict the defendant, we do not consider the trial court’s denial of the motion to sever an abuse of discretion.
IV
Finally, appellant argues that the trial court erred in failing to instruct the jury, sua sponte, that corroboration 3 of the complainant’s testimony was required before conviction of inсest. In (James E.) Arnold v. United States, supra, this court dispensed with the requirement for corroboration of a mature female victim of rape or its lesser included offenses. 4 Id. at 344. In doing so, we explicitly rejected the presumption that the testimony of a mature female victim of rape and other sex-related offenses was so *359 inherently incredible as to require corroboration. Id. Thus, we explicitly rejected the common justification for the corroboration requirement, such as: (1) the dangers of fabrication, (2) the difficulty of establishing a defense, and (3) the possibility that testimony of sexual assaults may enrage the jury. 5
We recently had occasion to consider the scope of
(James E.) Arnold
in
Sweet v. United States,
D.C.App.,
The crime of incest involves the same bodily invasion,
i.e.,
sexual intercourse, as that of rape, but also requires two additional elements: (1) that the victim was related to the defendant within the third degree of consanguinity; and (2) that the defendant knew the victim was so related at the time of sexual intercourse.
6
Lacking, however, from the elements of incest but required for rape is a showing that “the act was committed forcibly and against the will of the complaining witness.” Criminal Jury Instructions for the District of Columbia, No. 4.74 (3d ed. 1978). It is in proоf of this latter element that questions concerning the credibility and motivation of the complaining witness may be especially pertinent.
See (James E.) Arnold v. United States, supra
at 344;
United States v. Sheppard,
We perceive the need for corroboration of a mature female alleging incest to be no more compelling than for a mature female alleging rape. In fаct, the need for corroboration may be less compelling since consent is not a defense to incest. The possibility of fabricating a charge of incest, unlike fabricating a charge of rape, after consensual intercourse, is nonexistent since with or without consent, the sexual act among certain related parties constitutes incest. Thus, we see nothing in (James E.) Arnold that would cause us to view a mature female complaining of incest more suspiciously than one complaining of rape. Accordingly, we conclude that (James E.) Arnold intended to dispense with the corroboration requirement in prosecutions for incest where thе victim is a mature female. 7
Having so found, we must consider whether the complainant was a mature female. At the time of the first offense, she was approximately 16 and a half years old. While age alone is not determinative of maturity, it is an important fac
*360
tor.
Fitzgerald v. United States,
D.C.App.,
Affirmed.
Notes
.Appellant confuses misjoinder under Super. Ct.Cr.R. 8(a) with prejudicial joinder under Rule 14. Rule 8(a) provides, in pertinent part, that “[t]wo or more offenses may be charged in the same indictment ... if the оffense charged ... are of the same or similar character or are based on the same act or transaction or on two or more acts or transactions connected together or constituting parts of a common scheme or plan.” Since appellant failed to make a timely objection and since we do not find plain error in the instant joinder, we need not address appellant’s Rule 8(a) argument. See
Bittle v. United States,
D.C.App.,
. Corroboration means direct or circumstantial evidence of facts and circumstances which tend to support, but are independent of, the complainant’s testimony. Criminal Jury Instructions for the Distriсt of Columbia, No. 4.78 (3d ed. 1978);
Sweet v. United States,
D.C.App.,
. As of this year two jurisdictions, Idaho and Nebraska, still require corroboration in all sexual assault cases, while seven (including this jurisdiction) require it only in certain limited factual circumstances. The other jurisdictions do not require any form of corroboration.
See Fitzgerald v. United States,
D.C.App.,
. For a discussion of these common justifications for a corroboration requirement in sex crimes see Note, The Rape Corroboration Requirement: Repeal Not Reform, 81 Yale L.J. 1365, 1373-1384 (1972).
. The trial judge instructed the jury on the two counts of incest as follows:
Now the essential elements of the offense of incest charged in this case, and of which the government must prove beyond a reasonable doubt, are as follows:
One, that the defendant had sexual intercourse with [the complainant] on or about August 24th, 1975, insofar as count one is concerned. And that he had sexual intercourse with [the complainant] on or about August 8th, 1979, with respect to the charge in count two.
Second, that [the complainant] was related to the defendant within the third degree of consanguinity, that is, his dаughter.
Three, that at the time the defendant had sexual intercourse with [the complainant], he knew she was his daughter.
.We note that the D.C. Circuit had previously required corroboration in incest cases.
See United States v. Ashe,
. The only discussion of the complainant’s age came in a conference at the bench concerning jury instructions in which the court substituted the word “daughter” in an instruction on incest proposed by the prosecutor for the words “female child.” In addition, the court instructed the jury that “the age of the alleged victim in a charge of incest is immaterial and is not an element of the offense....”
