HOFFMAN, Judge:
This is an appeal from the judgment of sentence for involuntary deviate sexual intercourse, 18 Pa.C.S.A. § 3123. Appellant contends that (1) the trial court erred in (a) allowing the Commonwealth to present expert testimony on the “rape trauma syndrome,” (b) excluding testimony by appellant’s expert witness, (c) allowing Dominic Ragno to testify, and (d) permitting the jury to take two mugshots of [432]*432appellant into the jury deliberation room; (2) the trial court lacked jurisdiction to try him; (3) he was denied the right to a non-jury trial; (4) the lower court erred in denying his petition for habeas corpus; (5) his trial counsel was ineffective for failing to (a) raise a statute of limitations defense, (b) raise a Rule 1100 defense, (c) object to portions of the complainant’s testimony, (d) move for dismissal of the charges against appellant for a violation of the Interstate Agreement on Detainers, (e) interview or call two alibi witnesses, and (f) present certain evidence; and (6) his sentence was (a) excessive and (b) unconstitutional. We disagree and, accordingly, affirm.
In the early morning hours of November 26, 1977, the complainant was sexually assaulted by a man who had gained entrance to her home by posing as a police officer. At the time, she recognized her assailant as a man named Gallagher who had visited her house six months earlier to give her an estimate for installing windows in her basement. On that occasion, he had also claimed to be a police officer. Two weeks after the assault, the complainant was shown a photographic display containing appellant’s picture; she also confronted appellant at the police station, but was unable to identify him positively in either instance.1 In February, 1982, however, the complainant positively identified appellant in both a photographic display and a lineup.
Appellant was arrested on February 17, 1982 and charged with rape, indecent assault, indecent exposure, involuntary deviate sexual intercourse, burglary, aggravated assault, simple assault, and impersonating a public servant. On April 14, 1982, appellant filed a petition for a writ of habeas corpus on the ground that the police lacked probable cause to arrest him. This petition was denied on September 15, 1982. On March 9, 1983, following a seven-day trial, the jury found appellant guilty of involuntary deviate sexual [433]*433intercourse.2 Post-verdict motions were filed by new counsel; the lower court denied them on May 29, 1984. On that same date, appellant was sentenced to a term of ten-to-twenty years imprisonment. He filed a motion to reconsider the sentence which the lower court denied on June 26, 1984. This appeal followed.
Appellant’s primary contention is that the trial court erred in allowing Dr. Ann Burgess to testify concerning the rape trauma syndrome. At trial, appellant did not contest the occurrence of the rape and assault, but claimed that the complainant had incorrectly identified him as her attacker. Thus, the reliability of the complainant’s identification became the central issue at trial.
In order to explain why the complainant was able to identify appellant four years after the assault, although she had been unable to do so only two weeks after it, the Commonwealth introduced Dr. Burgess’s testimony on the rape trauma syndrome, a psychological condition observable in rape victims.3 After testifying to her extensive creden[434]*434tials, Dr. Burgess described the symptoms of rape trauma syndrome as occurring in two phases:
The symptoms are basically broken into two sections: the symptoms that occur right after the rape, which we call the acute phase, and these symptoms are very related to general stress symptoms; for example, the victim can’t sleep or can’t eat or is very upset and can’t think about anything like what their normal activities are, have difficulty going back to work, to school, taking care of their children, whatever their normal pattern has been, because of the emotional impact of the event.
These symptoms tend to subside within a few days to weeks, so that person can at least get back into their usual routine.
Then the second phase is what we call the reorganization phase, and this is where the person now must deal with the symptoms that are very specific to the rape. We call them the rape-related symptoms, and these symptoms can take months, years, for the person to really fully integrate into their psychological experience so that they can go about their business as they had prior to the event.
N.T. March 4, 1983 at 5.76. After elaborating on these symptoms, Dr. Burgess testified that she believed that the complainant was suffering from rape trauma syndrome, and enumerated the symptoms exhibited by the complainant that had led her to that conclusion. She also explained how phobias associated with the rape trauma syndrome could affect a victim’s ability to identify her attacker immediately after the assault, but, after a period of integration that might last years, the victim finally would be able to make an identification. At no time did Dr. Burgess state a personal opinion that the complainant was telling the truth.
Expert testimony is admissible when it involves explanations and inferences not within the ordinary training, knowledge, intelligence and experience of the jury. Auerbach v. Philadelphia Transport Co., 421 Pa. 594, 604, 221 A.2d 163, 171 (1966); Kubit v. Russ, 287 Pa.Superior Ct. [435]*43528, 35, 429 A.2d 703, 706 (1981). Of course, such testimony must also be relevant, that is, it must tend to make a fact at issue more or less probable, see Martin v. Soblotney, 502 Pa. 418, 422, 466 A.2d 1022, 1024 (1983), and it should not confuse, mislead, or prejudice the jury. See Lewis v. Mellon, 259 Pa.Superior Ct. 509, 515, 393 A.2d 941, 944 (1978). As the dissent notes, the admission of expert testimony is a matter within the sound discretion of the trial court, and its decision will not be reversed absent a clear abuse of that discretion. Laubach v. Haigh, 433 Pa. 487, 491, 252 A.2d 682, 683 (1969); Kubit v. Russ, supra 287 Pa.Superior Ct. at 35, 429 A.2d at 706.
Here, we believe that Dr. Burgess’s testimony was relevant to the central issue of identification and, if believed by the jury, was useful to explain a psychological phenomenon beyond the knowledge and experience of the average juror. We also find no evidence that this testimony confused, misled, or prejudiced the jury. We therefore conclude that the lower court did not abuse its discretion in admitting Dr. Burgess’s testimony.4
The dissent, while conceding that Dr. Burgess’s testimony was relevant to the issue of identification, see dissenting op. at 751, nevertheless finds it inadmissible. It would base this finding upon two grounds: that Dr. Burgess was not qualified to present expert testimony that the complainant suffered from rape trauma syndrome and that Dr. Bur[436]*436gess’s testimony bolstered the credibility of the complainant, thereby invading the province of the jury to determine credibility. We cannot agree with either of these grounds.
The dissent would find first that, while Dr. Burgess’s expertise qualified her to testify about the phenomenon of rape trauma syndrome, she was not qualified to testify as to her conclusion that the complainant was suffering from the syndrome. We do not believe that this issue is properly before our Court. Although appellant arguably objected to Dr. Burgess’s qualifications at trial, see N.T. March 4, 1985 at 5.75,5 he failed to preserve this issue for appellate review by raising it in his post-verdict motions, filed March 15, 1983; his amended post-verdict motions, filed October 11, 1983; his further amended post-verdict motions, filed March 1, 1984; or in any of the numerous post-verdict motions filed pro se by appellant. See Commonwealth v. Seachrist, 478 Pa. 621, 624, 387 A.2d 661, 663 (1978) (issues not raised in post-verdict motions are waived on appeal). He also failed to raise the issue in his statement of questions involved contained in his brief to this Court, see Pa.R.A.P. 2116 (ordinarily no point will be considered which is not set forth in the statement of questions involved), or in the argument section of that brief, see Commonwealth v. Balch, 328 Pa.Superior Ct. 71, 76, 476 A.2d 458, 461 (1984) (issues not argued in brief are waived). I would, therefore, find this issue waived. See also Wiegand v. Wiegand, 461 Pa. 482, 485, 337 A.2d 256, 257 (1975) (ordinarily, Superior Court may not raise issue sua sponte).
Even if the issue were not waived, however, we conclude that Dr. Burgess was qualified to testify. The [437]*437dissent would find that Dr. Burgess was not qualified to testify because she holds a doctorate in nursing rather than a medical degree. See dissenting slip op. at 9-10. This Court has previously held, however, that an expert need not have a medical degree in order to testify to the diagnosis of a psychological condition. In Kravinsky v. Glover, 263 Pa.Superior Ct. 8, 396 A.2d 1349 (1979), and Simmons v. Mullen, 231 Pa.Superior Ct. 199, 331 A.2d 892 (1974), we held that psychologists, who hold doctoral rather than medical degrees, were qualified to testify as to their diagnoses of emotional disturbances.
For the purpose of comparison, we note that in Kravinsky this Court concluded that a psychologist with the following credentials was qualified to testify about his diagnosis of a psychological condition: a Ph.D. in psychology; a one-year internship in clinical psychology; one year of postdoctoral training in behavior therapy; three years of teaching undergraduate psychology at the State University of New York, Buffalo; five years of private practice; treatment of twenty to twenty-five patients for the psychological condition at issue; and publication of several articles on that condition. Here, Dr. Burgess’s credentials were as relevant and supportive of her ability to diagnose rape trauma syndrome as those of the psychologist in Kravinsky to diagnose the psychological condition at issue in that case. Dr. Burgess received a master’s degree in psychiatric nursing and a Ph.D. in nursing science and is a certified specialist in mental health nursing. She received three years of clinical training at the Massachusetts Mental Health Center and did a clinical internship at the Massachusetts Treatment Center. She has taught courses in psychiatric nursing and research at Boston College since 1966 and at Boston University since 1968 and has been a full professor at both institutions. She was Chairperson of the Graduate Program in Nursing at Boston College and both Director of Nursing Research and Interim Dean at Boston University School of Nursing. She has had a private clinical practice since 1966, specializing in the treatment of persons experi[438]*438encing life crises. In 1972 and 1973, Dr. Burgess did clinical research involving 146 rape victims that resulted in the development of the theory of rape trauma syndrome. Since that time, she has written three books and over twenty articles on rape trauma syndrome, has lectured on the subject, and has chaired the National Advisory Board to the National Rape Center which reports directly to the Secretary of the United States Department of Health and Human Services. See N.T. March 4, 1983 at 5.30-.36, 5.66-75.
These credentials, particularly her clinical practice and her work and research with rape victims, gave Dr. Burgess an adequate basis for her opinion that the complainant exhibited symptoms of rape trauma syndrome. See id. at 5.82, 5.89. In light of the discretion that must be accorded to the trial court’s finding that Dr. Burgess was qualified to testify as she did, and rejecting, under these facts, formalistic distinctions between a psychiatrist, a psychologist, and a nurse, we conclude that Dr. Burgess’s training, expertise, and clinical experience qualified her to testify on both the general topic of rape trauma syndrome and her conclusions with regard to the complainant. Cf. Commonwealth v. Baldwin, 348 Pa.Superior Ct. 368, 502 A.2d 253 (1985) (admitting expert testimony of social worker on dynamics of intra-family sexual abuse and victim behavioral patterns).
This conclusion is supported by caselaw in jurisdictions where expert testimony concerning rape trauma syndrome has been admitted. Contrary to the dissent's conclusions, see dissenting op. at 753-754 n. 5, most jurisdictions admitting rape trauma syndrome evidence do not require that an expert witness hold a medical degree in order to testify that a complainant exhibits symptoms of rape trauma syndrome. See State v. Huey, 145 Ariz. 59, 699 P.2d 1290 (1985) (testimony of a person qualified by training and experience, such as a psychiatrist or a psychologist, that complainant has characteristics associated with rape trauma syndrome held admissible); State v. Young, No. 57,369, slip op. (Kan. July 26, 1985) (psychologist is competent to testify to diag[439]*439nosis of rape trauma syndrome); People v. Stull, 127 Mich.App. 14, 338 N.W.2d 403 (1983) (testimony of rape counselor that complainant’s behavior was consistent with profile of a rape victim held admissible); State v. Liddell, 685 P.2d 918 (Mont.1984) (testimony of doctor, psychiatric nurse, and psychological counselor that victim had symptoms of rape trauma syndrome held admissible); People v. Reid, 123 Misc.2d 1084, 475 N.Y.S.2d 741 (Sup.Ct.1984) (prosecution may introduce testimony of psychologist that complainant has rape trauma syndrome); State v. LeBrun, 37 Or.App. 411, 587 P.2d 1044 (1978) (testimony of “Rape Victim Advocate” associated with district attorney’s office that complainant’s emotional state comported with that of other sexual abuse victims held admissible); see also Comment, Expert Testimony on Rape Trauma Syndrome: Admissibility and Effective Use in Criminal Rape Prosecutions, 33 Am.U.L.Rev. 417, 451 n. 282 (1984) (nurses are licensed by the states to diagnose mental disorders); cf. People v. Bledsoe, 36 Cal.3d 236, 203 Cal.Rptr. 450, 681 P.2d 291 (1984) (excluding on other grounds testimony of rape counselor with masters degree in psychology and social work that complainant had rape trauma syndrome); People v. Pullins, 145 Mich.App. 414, 378 N.W.2d 502 (1985) (excluding on other grounds testimony by therapist that complainant had rape trauma syndrome); State v. Taylor, 663 S.W.2d 235 (Mo. 1984) (en banc) (testimony of expert in psychological testing field that complainant had characteristics consistent with those resulting from a traumatic stress reaction, such as rape, so long as term “rape trauma syndrome” is not used, held admissible); State v. Whitman, 16 Ohio App.3d 246, 475 N.E.2d 486 (1984) (court would allow expert testimony on rape trauma syndrome but rejects qualifications of social worker with no prior experience in diagnosing condition).6
[440]*440The dissent’s second ground for rejecting Dr. Burgess’s testimony is that it allegedly bolsters the complainant’s credibility, thereby invading the exclusive province of the jury to determine the credibility of witnesses. See dissenting op. at 753. The theory behind excluding expert testimony that bolsters a witness’s credibility is that it may encourage the jury to rely upon the expert’s evaluation of the witness’s veracity rather than making its own.7 See Commonwealth v. O’Searo, 466 Pa. 224, 229, 352 A.2d 30, 32 (1976).8
[441]*441The contention that rape trauma syndrome evidence bolsters the credibility of a complainant has been raised in almost every instance where such evidence has been introduced. However, most jurisdictions have rejected that contention and found that expert testimony on rape trauma syndrome is admissible in certain circumstances because it aids the jury in understanding a subject beyond the knowledge and experience of an average lay person. Because the information imparted by such expert testimony is beyond the average juror’s knowledge, its admission will not invade the jury’s province.
The dispute among the states that have considered the admissibility of expert testimony on rape trauma syndrome has centered upon its reliability in proving or corroborating that a rape occurred or that the victim did not consent rather than the likelihood that it will bolster credibility. Five states have ruled that expert testimony on rape trauma syndrome is admissible to prove lack of consent or to corroborate testimony that a rape occurred. See State v. Huey, 145 Ariz. 59, 699 P.2d 1290 (1985) (rape trauma syndrome evidence on the issue of consent held admissible but court questions its use to prove that a rape occurred); State v. Marks, 231 Kan. 645, 647 P.2d 1292 (1982) (court holds rape trauma syndrome testimony on the issue of consent admissible and finds that it provides detectable, reliable evidence of forceable assault); State v. Liddell, 685 P.2d 918 (Mont.1984) (rape trauma syndrome evidence on the issue of consent held admissible); State v. Stafford, 77 N.C.App. 19, 334 S.E.2d 799 (1985) (majority would allow testimony on characteristics of rape trauma syndrome to corroborate complainant’s testimony); State v. Whitman, 16 Ohio App.3d 246, 475 N.E.2d 486 (1984) (court would admit qualified expert’s testimony on rape trauma syndrome to corroborate testimony of complainant). Missouri courts will also admit expert testimony that a complainant exhibits characteristics consistent with those resulting from a traumatic stress reaction, such as rape, so long as the term “rape trauma syndrome” is not used and no opinion is [442]*442expressed concerning the complainant’s veracity. See State v. Taylor, 663 S.W.2d 235 (Mo.1984); State v. Shaw, 694 S.W.2d 857 (Mo.App.1985). Four other states have excluded evidence of rape trauma syndrome on the ground that it does not reliably prove rape or lack of consent. These cases focus on the development of the theory of rape trauma syndrome as a therapeutic tool rather than a fact-finding device and its apparent similarity to other post-traumatic stress disorders. See People v. Bledsoe, 36 Cal.3d 236, 203 Cal.Rptr. 450, 681 P.2d 291 (1984) (expert testimony on rape trauma syndrome inadmissible to prove that a rape occurred); Allewalt v. State, 61 Md.App. 503, 487 A.2d 664 (1985) (rape trauma syndrome evidence inadmissible to prove rape or lack of consent); People v. Pullins, 145 Mich.App. 414, 378 N.W.2d 502 (1985) (rape trauma syndrome evidence inadmissible to prove rape); State v. Saldana, 324 N.W.2d 227 (Minn.1982) (rape trauma syndrome evidence inadmissible to prove lack of consent).
No other state has considered yet the admissibility of expert testimony on rape trauma syndrome to explain a complainant’s initial inability to identify her assailant. It has been admitted in other states, however, to explain similar elements of a complainant’s behavior that may be confusing to a jury. In State v. Staples, 120 N.H. 278, 415 A.2d 320 (1980), the complainant was unable to remember clearly the events preceding the rape, but vividly recalled the actual assault. The defendant contended that the victim could not remember the preceding events because she was drunk and had fabricated the charge of rape. In order to rebut the allegation that drinking had caused the complainant’s memory loss,, the prosecution presented expert testimony that such memory loss was not unusual among rape victims. The defendant objected that this testimony was improper because it bolstered the complainant’s credibility, but the court found that the testimony aided the jury in understanding the complainant’s partial memory loss and was admissible so long as no expert opinion was given as to the complainant’s veracity. In People v. Reid, 123 Misc.2d [443]*4431084, 475 N.Y.S.2d 741 (Sup.Ct.1984), the complainant recanted her allegation of rape, and, in response to the defendant’s introduction of the recantation at trial, the prosecution sought to introduce expert testimony that false recantations are a symptom of rape trauma syndrome and that the complainant was suffering from the syndrome. Again, the court found that such testimony was admissible and did not invade the province of the jury so long as the expert did not testify that she believed the complainant. Even the California Supreme Court, which rejected the use of rape trauma syndrome evidence to prove rape or lack of consent, has recognized that such testimony may be admissible to explain elements of the complainant’s conduct to the jury. In People v. Bledsoe, supra, the court found that expert testimony on rape trauma syndrome might be useful to disabuse the jury of misconceptions about rape and rape victims, for example, by explaining that a delay in reporting a rape is common among rape victims and need not support an inference that the complaint was fabricated. 36 Cal.3d at 247-48, 681 P.2d at 298, 203 Cal.Rptr. at 457, 681 P.2d at 298.9
Similarly, in the instant case, appellant based his claim that he was not the man who had attacked the complainant upon her inability to positively identify him two weeks after the attack. The Commonwealth presented Dr. Burgess’s testimony that the symptoms of rape trauma syndrome might prevent a rape victim from identifying the rapist for an extended period of time in order to rebut appellant’s [444]*444contention that the complainant was mistaken in her subsequent identification. We believe that the lower court properly found that such testimony imparted information beyond the knowledge of the average lay person and would assist the jury in making its determination of the complainant’s credibility. Without expressing any opinion about the complainant’s veracity,10 Dr. Burgess explained the basis for her opinion that the complainant suffered from rape trauma syndrome, and the jury was free to accept or reject this testimony.11 We would, therefore, hold that this testi[445]*445mony did not invade the province of the jury by impermissibly bolstering the complainant’s credibility.12
The remainder of appellant’s contentions are completely without merit, and we will dispose of them summarily.
Appellant contends that the trial court erred in “forbidding” his expert, Dr. Perry Berman, to testify. See Brief for Appellant at 11. This contention misstates the trial court’s ruling. The court held that Dr. Berman could testify to the same extent that Dr. Burgess had. See N.T. March 7, 1983 at 5.21-.23. Appellant’s counsel, however, tried to question Dr. Berman about the desire for revenge displayed by victims of rape trauma syndrome, including the complainant. The trial court ruled that this testimony was inadmissible because (1) the testimony went beyond the scope of Dr. Burgess’s testimony and (2) the complainant had already testified about her desire for revenge. Id. In response to this ruling, appellant’s counsel decided not to present any testimony by Dr. Berman. Accordingly, we do not find that the trial court abused its discretion in limiting Dr. Berman’s testimony. See Laubach v. Haigh, supra (admission of expert testimony within sound discretion of trial court).
[446]*446Appellant next contends that the trial court erred in allowing Dominic Ragno to testify. He argues first that Ragno’s testimony should have been excluded because the Commonwealth did not disclose his name in pretrial discovery. This issue is waived as appellant’s counsel did not object to Ragno’s testimony on this basis, see N.T. March 8, 1983 at 4.102-.03. See also Ebner v. Ewiak, 335 Pa. Superior Ct. 372, 376, 484 A.2d 180, 182 (1984) (issue not preserved for appellate review when different ground for objection was presented at trial).
Appellant also argues that Ragno’s testimony should have been excluded because it was the fruit of an illegally obtained statement. He alleges that the Commonwealth learned of Ragno from a statement appellant made to police after his February 17, 1982 arrest that was inadmissible under the Davenport rule. See Commonwealth v. Davenport, 471 Pa. 278, 370 A.2d 301 (1977) (where accused is not arraigned within six hours of arrest, any statement obtained after arrest and before arraignment is inadmissible). Appellant’s argument is factually flawed, however, because the statement in which he referred to Ragno was not made on February 17, 1982, but in December, 1977 during a non-custodial interview. We therefore find this contention meritless.
Appellant contends next that the trial court erred in allowing the jury to take two mugshots of him into the jury room while it was deliberating. The pictures had been admitted into evidence without objection. See N.T. March 7,1983 at 5.30. The exhibits that a jury may consider in the jury room are within the trial court’s discretion, see Pa.R. Crim.P. 1114, and we can find no abuse of that discretion in the instant case. See Commonwealth v. Kingsley, 480 Pa. 560, 578, 391 A.2d 1027, 1036 (1978) (no error to allow jury to have evidence during deliberations where it was received without objection).
Appellant next contends that the court below lacked jurisdiction to try him. He alleges that before trial he filed [447]*447an appeal to this Court thereby divesting the lower court of jurisdiction. See Pa.R.A.P. 1701(a) (“Except as otherwise prescribed by these rules, after an appeal is taken ..., the trial court ... may no longer proceed further in the matter.”). We have searched the record and conclude that no notice of appeal was filed before appellant’s trial commenced.13 This contention is therefore meritless.
Appellant contends next that he was denied his right to waive a jury trial. We find this contention frivolous as there is no absolute right to a non-jury trial. See Pa.R.Crim.P. 1101; see also Commonwealth v. Merrick, 338 Pa.Superior Ct. 495, 499, 488 A.2d 1, 3 (1985) (“the decision to grant a waiver of a jury trial is one committed to the sound discretion of the trial court”). In the instant case, the trial court found that appellant’s request for a bench trial “was a gambit designed to have the case transferred to another court,” see Lower Court Opinion at 10, because the trial judge would have been compelled to recuse himself after having heard damaging evidence against appellant in the pre-trial motions. We find that the lower court’s desire to avoid a “judge-shopping” ploy was an adequate reason for denying appellant’s request for a non-jury trial and, accordingly, hold that there was no abuse of discretion.
Appellant also contends that the lower court erred in denying his petition for habeas corpus. In that petition, he alleged that the police lacked probable cause to arrest him because the complainant’s identification of him was invalid. This contention is meritless because an illegal arrest, after conviction, will not furnish grounds for dis[448]*448charge on a writ of habeas corpus. See Commonwealth ex rel. Loveday v. Myers, 422 Pa. 483, 487, 222 A.2d 725, 728 (1966); Commonwealth ex rel. Garrison v. Burke, 378 Pa. 344, 349, 106 A.2d 587, 589 (1954); see also Commonwealth ex rel. Romano v. Banmiller, 19 D. & C.2d 198, 200 (Ct.C.P.Phila. County) (“The writ of habeas corpus is not a substitute for a motion for a new trial or an appeal or for a writ of error.”), aff'd, 397 Pa. 606, 156 A.2d 825 (1959).
Appellant next contends that his counsel was ineffective for several reasons. In examining a claim of ineffectiveness, we must first inquire whether appellant’s claim has arguable merit. Only if the claim underlying appellant’s allegation of ineffectiveness has arguable merit will we address the other components of our test for ineffectiveness: whether the strategy chosen by counsel had some reasonable basis designed to effectuate appellant’s interests and whether counsel’s actions so prejudiced appellant as to deny him a fair trial. See Commonwealth v. Pierce, 345 Pa.Superior Ct. 324, 327-331, 498 A.2d 423, 425-26 (1985) (en banc), allocatur granted. The burden of proving counsel’s ineffectiveness rests upon appellant. Commonwealth v. Murray, 338 Pa.Superior Ct. 580, 584, 488 A.2d 45, 46 (1985).
Appellant’s first ineffectiveness argument is that his trial counsel should have raised a statute of limitations defense to the charge of involuntary deviate sexual intercourse. Appellant bases this argument upon the statute of limitations contained in 19 P.S. § 211, which, he alleges, contained a two-year statute of limitations for his offense.14 [449]*449That statute, however, was repealed by implication in 1973 by § 108 of the Crimes Code, 18 Pa.C.S.A. § 108. See Commonwealth v. Milano, 300 Pa.Superior Ct. 251, 446 A.2d 325 (1982). Thus, the statute of limitations in effect on the date of the crime, November 26, 1977, provided a five-year period in which to bring a prosecution for involuntary deviate sexual intercourse. 18 Pa.C.S.A. § 108(b)(1).15 Accordingly, we find that counsel was not ineffective for failing to raise this defense.16
Appellant argues next that his counsel was ineffective for failing to raise the claim that his trial was barred under Pa.R.Crim.P. 1100. He concedes that the Rule 1100 run-date for his case was February 28, 1983 and that pre-trial motions were heard on that date, see Brief for Appellant at 14, but alleges that Rule 1100 was violated because the actual trial did not begin until the following day. The comment to Rule 1100 states:
For the purpose of this rule, a trial commences when the trial judge determines that the parties are present and directs them to proceed ... to the hearing of any motions which had been reserved for the time of trial....
See also Commonwealth v. Kluska, 484 Pa. 508, 399 A.2d 681 (1979) (hearing of motions reserved for time of trial constitutes commencement of trial for purposes of Rule [450]*4501100). Because there was no Rule 1100 violation, we will not find counsel ineffective for failing to raise this claim.17
Appellant also argues that his counsel was ineffective for failing to object to the complainant’s emotional outbursts during her testimony.18 While appellant’s counsel could have objected to some of the complainant’s testimony, he testified that he did not because he “felt that [her outbursts] would make her look less credible in the eyes of the jury.” N.T. March 27, 1984 at 35. We find that this strategy was reasonably designed to effectuate appellant’s interests and, accordingly, will not hold counsel ineffective on this ground.
Appellant next argues that his counsel was ineffective for failing to move for dismissal of the charges against him for a violation of the Interstate Agreement on Detainers (the Agreement), 42 Pa.C.S.A. §§ 9101-9108. He cor[451]*451rectly states that the Agreement requires the dismissal of outstanding charges against a prisoner when the prisoner is removed from a state institution for prosecution of those charges in another state and returned to the institution without having been tried on those charges. See 42 Pa.C. S.A. § 9101, art. IV(e).19 The Agreement, however, governs only transfers of prisoners between Pennsylvania and other states, the federal government, its territories and possessions, Puerto Rico, and the District of Columbia. See id., art. 11(a). Here, appellant was only transferred from one Pennsylvania facility to another.20 Accordingly, we find that this argument is meritless and counsel was not ineffective for failing to raise it.
Appellant also argues that his counsel was ineffective for failing to interview or call two alibi witnesses. We have reviewed the record below and find that the lower court correctly concluded that appellant failed to prove that he had given counsel the names or addresses of the two witnesses. See Lower Court Opinion at 27-28; N.T. March 27, 1984 at 56-62. At the start of appellant’s trial, counsel placed on the record the names and addresses of all the witnesses appellant had identified for him. Appellant then was given the opportunity to supplement that list and failed to add the names of the two witnesses whose absence he now attributes to counsel’s ineffectiveness. See N.T. March 1, 1983 at 147-49. Under these circumstances, we cannot find counsel ineffective. See Commonwealth v. Ford, 491 Pa. 586, 592, 421 A.2d 1040, 1043 (1980) (failure to [452]*452interview witnesses of whose existence counsel is unaware is not ineffectiveness).
Appellant’s last allegation of ineffectiveness is that counsel failed to introduce certain evidence at trial. He alleges first that counsel should have secured and introduced pictures of his wearing a moustache. He claims that these pictures would have contradicted the complainant’s testimony that he was clean-shaven at the time of the assault. While counsel was informed of the existence of the pictures, appellant never gave him the information necessary to locate and obtain the pictures. N.T. March 27, 1984 at 13-14. Furthermore, we do not believe that appellant was prejudiced by counsel’s failure to introduce these pictures as they would have been cumulative to other evidence introduced concerning appellant’s appearance near the time of the assault. See, e.g., N.T. March 4, 1983 at 5.7, 5.111.
Appellant also alleges that counsel should have introduced telephone company records. He claims that these records would have contradicted the complainant’s testimony. We hold that appellant has failed to meet his burden of proving counsel’s ineffectiveness on this ground because he has not alleged how the documents would have contradicted the complainant’s testimony, see Brief for Appellant at 22, or introduced them into evidence.21 See N.T. March 27, 1984 at 17.
Appellant contends next that his sentence was excessive in light of his personal background.22 When a sentence is within statutory limits, and the court has com[453]*453plied with the Sentencing Code, 42 Pa.C.S.A. §§ 9701-9781, we will not reverse the sentencing court’s decision absent a manifest abuse of discretion. Commonwealth v. Brown, 314 Pa.Superior Ct. 311, 323, 460 A.2d 1155, 1161 (1983). Here, appellant’s sentence was within the statutory limits, and, after reviewing the record, we find that the lower court did consider appellant’s personal background. See N.T. May 29, 1984 at 61-71. We therefore hold that its sentence did not constitute a manifest abuse of discretion.
Appellant also contends that his sentence was unconstitutional because he was not sentenced pursuant to the sentencing guidelines, 204 Pa.Code §§ 303.1-.9, reprinted following 42 Pa.C.S.A. § 9721. This argument is waived because appellant failed to include it in his statement of questions involved. See Pa.R.A.P. 2116(a) (“ordinarily no point will be considered which is not set forth in the statement of questions involved”).23
Having found all of appellant’s contentions to be without merit, we affirm the judgment of sentence.
Affirmed.
CAVANAUGH, J., files a dissenting opinion.