Thе plaintiff appeals from the dismissal in the Superior Court of her tort action against her former hus *22 band. A judge dismissed this action on the ground that the issues presented in the tort action hаd been addressed previously in the parties’ divorce action. We transferred the case to this court on our own motion, and now reverse.
We summarize the facts as statеd in the Superior Court complaint. On April 22, 1982, the parties were still married, although they had been separated for some months. That day, they engaged in a heated telephone argument. The defendant went to the plaintiff’s residence to continue the argument, but the plaintiff would not open the door. The defendant then broke a glass panel in the door, reached through, grabbed the plaintiff by the arm, and violently pulled her, causing her repeatedly to strike her head against the door frame. As a result, the plaintiff sustained serious рhysical injuries, including spells of dizziness and blackouts. She subsequently was diagnosed as having traumatic epilepsy. She seeks damages for her personal injuries.
Other facts were assеrted before the judge in the Superior Court by means of affidavits and a transcript of proceedings before a judge of the Probate Court. The parties were divorced оn August 19, 1985, following a hearing in which the plaintiff presented evidence as to, among other things, the assault and her injuries. The plaintiff filed the instant action in the Superior Court on April 22, 1985, prior to the divorce proceedings. The plaintiff did not disclose the existence of the pending tort claim to the Probate Court. She did not serve the defendant with a copy of thе complaint until almost a year later, on April 18, 1986, after the Probate Court judge entered judgment in the divorce action. The divorce was granted pursuant to G. L. c. 208, § IB (1986 ed.), on the ground оf irretrievable breakdown of the marriage. The plaintiff was awarded custody of the couple’s five children, alimony, child support, and a share of the marital property. The Probate Court judge did not make findings indicating what factors he considered in reaching his decisions as to alimony and the division of marital property. The divorce judgment was not appealed, and has become final. See G. L. c. 215, §§ 9, 24 (1986 ed.). Cf. Mass. R. Dom. Rel. P. 60 (b) (1975).
*23
On being served with the complaint in the plaintiff’s tort action, the defendant filed a motion to dismiss under Mass. R. Civ. P. 12 (b) (5),
The plaintiff assigns as error certain alleged procedural irregularities. Because our resolution of the substantive issues in this case requires reversal of the judgment below, we do not address these procedural issues.
1.
Claim preclusion.
The doctrine of claim preclusion makes a valid, final judgment conclusive on the parties and their privies, and bars further litigation оf all matters that were or should have been adjudicated in the action. See
Franklin
v.
North Weymouth Coop. Bank,
A tort action is not based on the same underlying claim as an action for divorce. Accord
Goldman
v.
Wexler,
2.
Issue preclusion.
To defend successfully on the ground оf issue preclusion, the defendant must establish that the issue of fact sought to be foreclosed actually was litigated and determined in a prior action between the partiеs or their privies, and that the determination was essential to the decision in the prior action. See, e.g.,
Cousineau
v.
Laramee,
3. Failure to prosecute. The defendant renews on appeal his contention that this action should be dismissed for failure to prosecute, because of the plaintiff’s delay in serving the complaint. He argues that the plaintiff in bad faith delayed service in order to obtain a tactical advantage in the divorce action; that she improperly failed to list the existence of the action as an asset on a verified financial statement filed in the Probate Court; 3 and that he has been prejudiced by the delay because he no longer may appeal the divorce judgment. These issues are not properly before us on appeal. Thе parties presented little or no relevant evidence on these issues, the Superior Court judge made no findings, and the record is inadequate to permit a ruling of law. We therеfore express no opinion as to *26 these issues. The defendant on remand may raise these issues by appropriate motion or pleading.
Judgment reversed.
Notes
We treat the defendant’s motion according to its true character, as a motion to dismiss under Mass. R. Civ. P. 41 (b) (2),
An explanation of terminology is in order. “Res judicata” is the generic term for various doctrines by which a judgmеnt in one action has a binding effect in another. It comprises “claim preclusion” and “issue preclusion.” “Claim preclusion” is the modem term for the doctrines traditionally known аs “merger” and “bar,” and prohibits the maintenance of an action based on the same claim that was the subject of an earlier action between the same partiеs or their privies. “Issue preclusion” is the modem term for the doctrine traditionally known as “collateral estoppel,” and prevents relitigation of an issue determined in an еarlier action where the same issue arises in a later action, based on a different claim, between the same parties or their privies. See generally, 18 C.A. Wright &A.R. Miller, Federal Practice and Procedure § 4402 (1981 & Supp. 1987); IB Mоore’s Federal Practice par. 0.401, at 4-5 (1984). We use the terms “claim preclusion” and “issue preclusion” throughout this opinion. Similarly, we use the modem term “claim” in lieu of the traditional term “cause of action.”
We think that it is appropriate to require, in future divorce actions, that the parties list the existence of such claims, although of unascertainable market value, in financial statements filed with the Probate Court.
