2. In a series of recent cases ((71) See, in particular, Reg. v. Watson; Ex parte Armstrong [1976] HCA 39; (1976) 136 CLR 248 at 258-263; Re Judge Leckie; Ex parte Felman (1977) 52 ALJR 155 at 158; 18 ALR 93 at 97-98; Re Shaw; Ex parte Shaw (1980) 55 ALJR 12 at 14, 16; 32 ALR 47 at 50-51, 54; Livesey v. New South Wales Bar Association [1983] HCA 17; (1983) 151 CLR 288 at 293-294, 300; Re J.R.L.; Ex parte C.J.L. [1986] HCA 39; (1986) 161 CLR 342 at 349-350, 351-352, 359, 368, 371; Vakauta v. Kelly [1989] HCA 44; (1989) 167 CLR 568 at 572, 575; Laws v. Australian Broadcasting Tribunal [1990] HCA 31; (1990) 170 CLR 70 at 81, 87, 96, 99-100.), the Court has formulated the test to be applied in this country in determining whether a judicial officer ("a judge") is disqualified by reason of the appearance of bias, as distinct from proved actual bias. That test, as so formulated, is whether, in all the circumstances, a fair-minded lay observer with knowledge of the material objective facts "might entertain a reasonable apprehension that (the judge) might not bring an impartial and unprejudiced mind to the resolution of the question" in issue. The quoted words in that statement of the test are taken from the judgment of the Court in Livesey v. New South Wales Bar Association ((72) (1983) 151 CLR at 293-294.). In that case, and in a number of the other cases, the test was stated in terms of an apprehension on the part of "the parties or the public" ((73) See, e.g., Reg. v. Watson; Ex parte Armstrong (1976) 136 CLR at 262; Re Judge Leckie; Ex parte Felman (1977) 52 ALJR at 158; 18 ALR at 98; Re Shaw; Ex parte Shaw (1980) 55 ALJR at 14, 16; 32 ALR at 50, 54; Livesey v. New South Wales Bar Association (1983) 151 CLR at 293-294; Re J.R.L.; Ex parte C.J.L. (1986) 161 CLR at 351; Grassby v. The Queen [1989] HCA 45; (1989) 168 CLR 1 at 20.). So stated, the test directly reflects its rationale, namely, that it is of fundamental importance that the parties to litigation and the general public have full confidence in the integrity, including the impartiality, of those entrusted with the administration of justice ((74) See, e.g., Reg. v. Watson; Ex parte Armstrong (1976) 136 CLR at 263; Reg. v. Gough [1993] UKHL 1; (1993) AC 646 at 659.). However, the test is an objective one and the standard to be observed in its application is that of a hypothetical fair-minded and informed lay observer ((75) See, e.g., Stollery v. Greyhound Racing Control Board [1972] HCA 53; (1972) 128 CLR 509 at 517, 519; Livesey v. New South Wales Bar Association (1983) 151 CLR at 299, 300; Builders' Reg. Board of Qld v. Rauber (1983) 57 ALJR 376 at 380, 389-390; 47 ALR 55 at 62, 80; Laws v. Australian Broadcasting Tribunal (1990) 170 CLR at 87- 88, 95-96, 98-100; Vakauta v. Kelly (1989) 167 CLR at 572, 573, 576, 585. And cf. Reg. v. Australian Stevedoring Industry Board; Ex parte Melbourne Stevedoring Co. Pty. Ltd. [1953] HCA 22; (1953) 88 CLR 100 at 116 ("reasonable persons"); Reg. v. Watson; Ex parte Armstrong (1976) 136 CLR at 263 ("fair-minded people").). That being so, it is convenient to frame the test itself in terms of reasonable apprehension on the part of that particular inhabitant of the common law. I have used the word "apprehension" in preference to the word "suspicion" for the reason that the latter word is capable of conveying shades of meaning which are inappropriate in this context. As a practical matter, however, there is little, if any, difference between the content of the two words when prefaced by "reasonable" and I have, in referring to authority in this judgment, on occasion treated them as interchangeable ((76) In particular in fn.(73) (above) and fn.(79) (below).).