On May 20, 1977, Damiano was arraigned on thirty-seven indictments charging him with unnatural sexual intercourse with, and abuse of, children under age sixteen. On September 26, 1977, he offered pleas of guilty
*616
to all the indictments before the judge of the Superior Court who had been assigned the trial (trial judge). This judge accepted his pleas to twenty-three indictments and sentenced him to twenty-three concurrent life terms. The remaining fourteen indictments were dismissed as duplicitous. On November 18, 1981, Damiano filed a motion pursuant to Mass.R.Crim.P. 30,
The motion judge found that between June 15 and 17, 1977, the prosecutor assigned to try the case advised Damiano’s counsel that he would recommend consecutive life sentences if Damiano went to trial and was convicted on more than one indictment, but concurrent life sentences if Damiano pleaded guilty. On or about June 21, 1977, the prosecutor informed Damiano’s counsel that a defendant faced with related charges might receive a suspended sentence because of his cooperation with the police investigation of the so called “Revere sex ring.” On or about August 24, 1977, the trial judge advised the prosecutor and Damiano’s counsel, in an unrecorded lobby conference, that if Damiano pleaded guilty he would not exceed the Commonwealth’s recommendation without allowing withdrawal of the pleas. Later that same day, the prosecutor informed Damiano’s counsel that he had changed his recommendation on a codefendant, one Peluso, from a life sentence to a term of fifteen to twenty-five years because of the latter’s cooperation and that he would consider recommending a term of twenty-two to thirty years for Damiano *617 should he agree to assist the investigation. Damiano declined to provide information to the Commonwealth; the prosecutor reaffirmed his recommendation of concurrent life terms should pleas of guilty be entered. On or about September 14, 1977, at a second unrecorded lobby conference, the trial judge reiterated his intention not to exceed the prosecutor’s recommendation in the event of a plea of guilty. The trial judge stated (as found by the motion judge) that “he was impressed with the candor and cooperation of the co-defendant . . . Peluso, whose plea [he] had . . . taken. [The judge] suggested that if the defendant were to cooperate with the Commonwealth by providing names and assistance, [he] would give such cooperation ‘consideration’ when sentencing the defendant. [D amiano’s counsel] pressed the judge to substantiate what he meant by ‘consideration,’ and only at . . . defense counsel’s urging, did the judge indicate that he had an eighteen to twenty year sentence in mind if defendant cooperated.” 3 Damiano again declined to furnish information to the police. On September 26, 1977, he tendered his pleas of guilty.
The motion judge ruled that the pleas were voluntary, notwithstanding Damiano’s claim that he had been coerced by the trial judge. He also concluded that the trial judge’s comments indicating a disposition to impose a lesser sentence in the event the defendant cooperated could not have created the “reasonable apprehension of vindictiveness” described by the United States Court of Appeals for the First Circuit in
Longval
v.
Meachum,
*618 On appeal, Damiano’s several arguments raise only two questions of merit: (1) whether the trial judge’s involvement in the plea negotiations coerced the guilty pleas, 5 and (2) whether the sentence actually imposed was a vindictive response to Damiano’s exercise of his right to remain silent rather than “cooperate” in an ongoing criminal investigation.
1.
The question of coercion.
It is fundamental that “a defendant, whatever his character, may not be punished for exercising his right to trial and, therefore, the fact that he has done so should be given no weight in determining his sentence.”
Letters
v.
Commonwealth,
We find no basis for concluding that the trial judge coerced Damiano’s pleas in the sense just described. The United States Supreme Court has acknowledged the legitimacy of plea bargaining and rejected the “notion that a guilty plea is involuntary in a constitutional sense simply because it is the end result of the bargaining process.” Our cases have recognized that a certain degree of coercion (in the sense of psychological or emotional pressure) is endemic to any system which asks a person to forgo certain rights in order to be spared certain penalties. See
Commonwealth
v.
Leate,
The trial judge’s statement that he would not exceed the prosecutor’s recommendation without first permitting Damiano to withdraw his pleas (a procedure subsequently approved by Mass.R.Crim.P. 12[c][2][A],
The trial judge’s subsequent statement that he would impose a more lenient sentence if the defendant chose to cooperate could not have coerced the pleas. Damiano remained free at all times to reject the notion of cooperation (as he steadfastly did) and to insist upon having a jury trial. The risk of enhanced punishment because of a failure to cooperate remained the same whether Damiano chose a plea or a trial. Since that risk would not have been obviated by a decision to plead, it could not have unduly influenced Damiano’s decision to admit his guilt. Moreover, nothing said by the judge about cooperation could have led Damiano to believe either that he could not get a fair trial because the judge thought a trial would be futile or tlmt the judge would be biased against him at trial.
In sum, the criticized lobby conference did nothing more than crystallize several choices for Damiano which were intended to assist him in making an informed decision as to his plea. None of the choices imposed pressures beyond those normally affecting a defendant in his situation. See
Commonwealth
v.
Leroy, supra; Commonwealth
v.
Tirrell, supra; Commonwealth
v.
Mendez, 8
Mass. App. Ct. 914, 915 (1979). There is no evidence that Damiano was peculiarly susceptible to these normal pressures, such that they might have exercised an unusual coercive effect upon him as an individual. Although we acknowledge merit in Damiano’s characterization of the powerful influence a trial judge may exert on the mind of a criminal defendant, we
*621
conclude that he was subjected only to normal pressures intrinsic to the plea bargaining process and that he was not affected by any special susceptibility to those pressures which would have left him “so gripped by fear ... or hope of leniency that he did not or could not, with the help of counsel, rationally weigh the advantages of going to trial against the advantages of pleading guilty.”
Commonwealth
v.
Tirrell,
382 Mass, at 510, quoting from
Brady
v.
United States, 397
U.S. 742, 750 (1970). See
United States ex rel. Robinson
v.
Housewright,
This conclusion is further supported by the trial judge’s colloquy with Damiano to ascertain whether his pleas were made knowingly and voluntarily. See
Boykin
v.
Alabama,
Finally, we have expanded our consideration of the case to assume that the recent decision in
United States
v.
Good
*623
win,
*624 2. The question of vindictiveness in the sentence. Damiano argues that his sentences were imposed vindictively in retaliation for his refusal to cooperate. The trial judge undoubtedly considered the absence of cooperation as a negative factor in his assessment of a proper sentence. Damiano contends that this amounts to vindictive retribution for his exercise of his Fifth Amendment right to silence.
Although Damiano knew that the existence of cooperation might be considered in sentencing, neither he nor his trial counsel offered any explanation to the trial judge for his silence. If Damiano “believed that his failure to cooperate was privileged, he should have said so at a time when the sentencing court could have determined whether his claim was legitimate.”
Roberts
v.
United States,
The question remains whether “cooperation” may be considered upon sentencing. It clearly may. “Unless his silence is protected by the privilege against self-incriminatian . . . the criminal defendant no less than any other citizen is obliged to assist the authorities .... By declining to cooperate, [a defendant] reject[s] an obligatio[n] of community life that should be recognized before rehabilitation can begin. . . . Few facts available to a sentencing judge are more relevant to the likelihood that [a defendant] will transgress no more, . . . and the degree to which he does not deem himself at war with his society.”
Roberts
v.
United States,
The order denying the motion for postconviction relief is affirmed.
So ordered.
Notes
In the interim, the trial judge had been appointed a judge of the United States District Court for the District of Massachusetts.
Damiano is represented by new counsel on the appeal.
The defendant argues that the quoted finding is erroneous. He contends that the evidence establishes that the trial judge flatly promised an eighteen- to twenty-year sentence and added that he would have to apologize to the public for imposing such a light sentence. The only witness at the hearing on the motion was Damiano’s trial counsel. We have examined the transcript carefully and conclude that the finding has sufficient evidentiary support particularly in light of the witness’ need to refresh his recollection about events that had occurred four years previously.
The Longval decision was vacated subsequent to the motion judge’s denial of the defendant’s motion for postconviction relief. The reasons for *618 the United States Supreme Court’s disposition of the Longval case will be discussed in note 14, infra.
No question is raised with respect to the prosecutor’s offer to recommend a reduced sentence if Damiano chose to forgo trial and plead guilty. Recommendations of this sort are recognized as permissible negotiating tools by prosecutors in the plea bargaining process. See
Santobello
v.
New York,
The pleas in issue were entered prior to the effective date (July 1, 1979) of Mass.R.Crim.P. 12,
It is well-recognized that a judge’s participation in the actual plea-bargaining process presents a high potential for coercion arising out of the *619 defendant’s view of the judge as the party in control of the courtroom and the final arbiter of his fate. As noted in the commentary to § 3.3(a) of the A.B.A. Standards, supra at 73: “(1) judicial participation in the discussions can create the impression in the mind of the defendant that he would not receive a fair trial were he to go to the trial before this judge; (2) judicial participation in the discussions makes it difficult for the judge objectively to determine the voluntariness of the plea when it is offered; (3) judicial participation to the extent of promising a certain sentence is inconsistent with the theory behind the use of the presentence investigation report; and (4) the risk of not going along with the disposition apparently desired by the judge may seem so great to the defendant that he will be induced to plead guilty even if innocent.” These reasons, and those discussed later in this opinion at n.13, suggest that the judge’s role in a plea case should not stray beyond the limitations set out in Mass.R.Crim.P. 12.
That a claim of coercion must be supported by facts appearing in the record and not based solely on a defendant’s subjective beliefs or complaints has been settled in this Commonwealth. See
Commonwealth
v.
Tirrell,
Damiano was at the time a man of mature years. He possessed a high school education. There was no evidence of physical or mental impairments. He had previous experience with the criminal justice system and was on probation at the time of sentencing.
For example, at one point Damiano responded to an inquiry by the trial judge as to whether he willingly and intentionally committed unnatural intercourse with one victim by stating, “I don’t know how to answer that. . . your Honor. Because, see, I lack self-control. I have no control over my impulses, so I don’t think I should say I did it willingly or intentionally.” To the next question by the judge “Did you know what you were doing at the time?”, Damiano answered “Yes.” At another point, Damiano asked for a more precise definition of “force” as applied to the facts of one indictment.
The defendant acknowledged the discretionary range of the judge’s sentencing power, and the fact that any recommendation by either the prosecutor or his counsel was not binding on the court. He had been made aware of the fact that the judge would not exceed the prosecutor’s recommendation without giving him an opportunity to withdraw his pleas.
Trial counsel had informed Damiano of all conversations in the lobby with the judge. Damiano’s counsel stated at the plea hearing that it appeared to him that his client was pleading guilty freely and voluntarily and that he knew of no reason why the pleas should not be accepted.
While the record demonstrates that the defendant’s pleas were voluntary, we hasten to add that nothing said in this opinion should be construed as encouraging judicial participation in plea bargaining. By avoiding the practice a judge will (as explained in
United States
v.
Werker,
Vindictiveness and coercion are essentially different concepts. Vindictiveness is retaliation for rightful action taken in the past (e.g., the imposition of a heavier sentence upon a verdict of guilt than would have been imposed upon a plea of guilty). Coercion is the use of a threat to induce action. The two concepts have at least one feature in common, since one may attempt coercion by threatening to take action which, if taken, would be vindictive.
In
United States
v.
Goodwin, supra,
the United States Supreme Court addressed the use of presumptions to establish vindictiveness by prosecutors and judges against defendants who have exercised the right to resist or attack convictions by insisting on a jury trial. The Court held that in
North Carolina
v.
Pearce,
As can be seen from the foregoing discussion, the due process concepts analyzed in Goodwin are generally inapposite to a claim of coercion leveled at the plea bargaining process. Nevertheless, we have given the defendant’s contentions the benefit of the doubt, concluding that his appeal is not materially aided by anything said in the Goodwin decision.
