tiary standard it cited was the regular summary judgment standard, and it expressly credited evidence submitted by Accor. It did this despite the existence of factual and discovery disputes.
The main disputed jurisdictional fact in this case is the level of control exercised by Accor over Motel 6 Operating. Indeed, Dean and the district court largely limited their analysis to this question, even though an alleged parent’s control over a subsidiary is merely one factor of many to be considered. See Third Nat’l Bank in Nashville v. WEDGE Group Inc., 882 F.2d 1087, 1090 n. 1 (6th Cir.1989), cert. denied, 493 U.S. 1058, 110 S.Ct. 870, 107 L.Ed.2d 953 (1990); Velandra v. Regie Nationale des Usines Renault, 336 F.2d 292, 296 (6th Cir.1964).
Dean argues that Accor controlled the operations of the Richmond Motel 6; Accor counters that it is merely an investor. Accor submitted an affidavit from Sven Boinet, perfunctorily but thoroughly denying any contacts between Accor and Kentucky. Dean, by contrast, notes deposition testimony in which Boinet is identified as “the person at Accor responsible for all hotel operations in which ... Accor [has] an interest.” This is precisely the sort of contested question that should be resolved in an evidentiary hearing. The district court should not have considered (let alone credited) Boinet’s affidavit in its ruling if it did not hold an evidentiary hearing.
The district court’s error is not, however, sufficient to warrant reversal unless Dean can show that she would have prevailed using the proper standard; that is, Dean must show that the error was not harmless. We turn, therefore, to an independent analysis of the district court’s jurisdiction over Accor.
C
Because federal jurisdiction in this case was pursuant to diversity of citizenship, we must look to Kentucky law to determine whether jurisdiction is appropriate. Creech v. Roberts, 908 F.2d 75, 79 (6th Cir.1990), cert. denied, 499 U.S. 975, 111 S.Ct. 1619, 113 L.Ed.2d 717 (1991).
The standards for establishing personal jurisdiction under the Kentucky long-arm statute are well-established:
• The Kentucky long-arm statute has been understood to reach the limit permitted by the Constitution. Thus, the single issue is whether the jurisdiction sought is within the requirements of due process.
We have historically employed the following criteria to determine if personal jurisdiction is appropriate:
First, the defendant must purposefully avail himself of the privilege of acting in the forum state or causing consequence in the forum state. Second, the cause of action must arise from the defendant’s activities there. Finally, the acts of the defendant or consequences must have a substantial enough connection with the forum state to make the exercise of jurisdiction over the defendant reasonable.
Tobin v. Astra Pharmaceutical Prods., Inc., 993 F.2d 528, 542-43 (6th Cir.) (citations omitted), cert. denied, 510 U.S. 914, 114 S.Ct. 304, 126 L.Ed.2d 252 (1993) (applying Southern Machine Co. v. Mohasco Indust., Inc., 401 F.2d 374, 381 (6th Cir.1968)); see Friction Materials Co. v. Stinson, 833 S.W.2d 388, 390 (Ky.Ct.App.1992) (applying Southern Machine).
The “sine qua non” of personal jurisdiction is the purposeful availment factor, Southern Machine, 401 F.2d at 381-82, under which the defendant must “purposefully avail[ ] itself of the privilege of conducting activities within the forum State, thus invoking the benefits and protections of its laws.” Burger King v. Rudzewicz, 471 U.S. 462, 475, 105 S.Ct. 2174, 2183, 85 L.Ed.2d 528 (1985). “This purposeful availment requirement ensures that a defendant will not be haled into a jurisdiction solely as a result of random, fortuitous, or attenuated contacts, or of the unilateral activity of another party or a third person.” Ibid, (quotation marks and citations omitted).
This concern is particularly apt in this case, where Dean would have this court exercise jurisdiction over Accor because of the activity of Motel 6 Operating. Although Ac-cor does have a controlling interest in Motel