twofold test (New York) · Go Syfert
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twofold test in New York

17 New York opinions name it 6 courts 1978–2025 3 in the last five years

The cases below were cited by New York courts in a sentence that names this issue. Sides come from how each citing opinion treated the case (Syfertize flag on that citation), so a case can appear on both: that is where the law is contested. A red or yellow chip is the case's own overall treatment.

Followed or applied (10)

CaseFollowedCited
Katz v. United Statesgreen
scotus · 1967 · cited in 4 New York opinions naming this issue, 1981–2019
2 sentences

2019The majority relies approvingly on Justice Harlan’s well-accepted statement that the expectation of privacy “is a twofold requirement, first that a person have exhibited an actual (subjective) expectation of privacy and, second, that the expectation be one that society is prepared to recognize as ‘reasonable’” (Katz v United States, 389 US 347, 361 [1967] [Harlan, J., concurring]).

1988In Katz v United States ( 389 US 347, 361 [1967]), Justice Harlan, in a concurring opinion, articulated the nature of one’s expectation of privacy: "[T]here is a twofold requirement, first that a person have exhibited an actual (subjective) expectation of privacy and, second, that the expectation be one that society is prepared to recognize as 'reasonable.’ ” The majority opinion of the court (Stewart, J.) noted that "the Fourth Amendment protects people, not places.

24
People v. Allweissgreen
ny · 1979 · cited in 2 New York opinions naming this issue, 1985–1999
2 sentences

1999The first requirement is that the opinion testimony “depend upon professional or scientific knowledge or skill not within the range of ordinary training or intelligence” (Dougherty v Milliken, 163 NY 527, 533 ; see also, People v Allweiss, 48 NY2d 40, 50 ).

1985In New York a twofold test has been adopted for determining admissibility: (1) does the opinion testimony “depend upon professional or scientific knowledge or skill not within the range of ordinary training or intelligence” (Dougherty v Milliken, 163 NY 525 , 533; People v Allweiss, 48 NY2d 40 ) and (2) is the state of the pertinent art or scientific knowledge sufficiently developed to permit a reasonable opinion to be asserted even by an expert (see, People v Leone, 25 NY2d 511; Frye v United States, 293 F 1013, supra; McCormick, Evidence § 13 [Cleary 2d ed 1972]).

12
Nick v. Schneidergreen
nyappdiv · 2017 · cited in 1 New York opinions naming this issue, 2024–2024
1 sentence

2024First, the defendant must have purposefully availed itself of the privilege of conducting activities within the forum state by either transacting business in New York or contracting to supply [goods or] services in New York and second, the claim must arise from that business transaction or from the contract to supply [goods or] services" ( Gottlieb v Merrigan , 170 [*2]AD3d 1316, 1317 [3d Dept 2019] [internal quotation marks, ellipses, brackets and citations omitted], lv denied 33 NY3d 908 [2019]; see Nick v Schneider , 150 AD3d 1250, 1251 [2d Dept 2017])."To satisfy the second prong[,] . . .

11
Medicon Diagnostic Laboratories, Inc. v. Peralesgreen
nyappdiv · 1989 · cited in 1 New York opinions naming this issue, 2022–2022
1 sentence

2022Co. Larocca , 117 AD2d at 443 ; see Morrissey v Brewer , 408 US at 481 ; Matter of Medicon Diagnostic Labs. v Perales , 145 AD2d 167, 172 [1989], affd 74 NY2d 539 [1989]).

11
Morrissey v. Brewergreen
scotus · 1972 · cited in 1 New York opinions naming this issue, 2022–2022
1 sentence

2022Co. Larocca , 117 AD2d at 443 ; see Morrissey v Brewer , 408 US at 481 ; Matter of Medicon Diagnostic Labs. v Perales , 145 AD2d 167, 172 [1989], affd 74 NY2d 539 [1989]).

11
Rasheed Al Rushaid v. Pictet & Ciegreen
ny · 2016 · cited in 1 New York opinions naming this issue, 2019–2019
1 sentence

2019"First, the defendant must have purposefully availed itself of the privilege of conducting activities within the forum [s]tate by either transacting business in New York or contracting to supply . . . services in New York" and "[s]econd the claim must arise from that business transaction or from the contract to supply . . . services" ( D & R Global Selections, S.L. v Bodega Olegario Falcon Pineiro , 29 NY3d 292, 297 [2017] [internal quotation marks and citation omitted]; see Rushaid v Pictet & Cie , 28 NY3d 316, 323 [2016]).

11
D&R Global Selections, S.L. v. Bodega Olegario Falcon Pineirogreen
ny · 2017 · cited in 1 New York opinions naming this issue, 2019–2019
1 sentence

2019"First, the defendant must have purposefully availed itself of the privilege of conducting activities within the forum [s]tate by either transacting business in New York or contracting to supply . . . services in New York" and "[s]econd the claim must arise from that business transaction or from the contract to supply . . . services" ( D & R Global Selections, S.L. v Bodega Olegario Falcon Pineiro , 29 NY3d 292, 297 [2017] [internal quotation marks and citation omitted]; see Rushaid v Pictet & Cie , 28 NY3d 316, 323 [2016]).

11
Cajas-Romero v. Wardgreen
nyappdiv · 2013 · cited in 1 New York opinions naming this issue, 2015–2015
1 sentence

2015The plaintiff could rely upon the legal inference that D&D and Gutierrez were negligent, as it was clear from the submissions that their garbage truck struck the van in the rear while the van was in a stopped position at the scene of the accident (see Billis v Tunjian, 120 AD3d 1168 [2014]; Amador v City of New York, 120 AD3d 526 [2014]; Cajas-Romero v Ward, 106 AD3d 850, 851 [2013]; Kertesz v Jason Transp.

11
O'CONNOR v. Ortegagreen
scotus · 1987 · cited in 1 New York opinions naming this issue, 2013–2013
1 sentence

2013“The search will be permissible in its scope when the measures adopted are reasonably related to the objectives of the search and not excessively intrusive in light of the nature of the misconduct” ( 480 US at 726 [citations, internal quotation marks, ellipses and brackets omitted]).

11
New Jersey v. T. L. O.green
scotus · 1985 · cited in 1 New York opinions naming this issue, 2013–2013
1 sentence

2013O. ( 469 US 325, 341-342 [1985]), summarized the approach of courts to the question of reasonableness in this way: “Determining the reasonableness of any search involves a twofold inquiry: first, one must consider whether the action was justified at its inception; second, one must determine whether the search as actually conducted was reasonably related in scope to the circumstances which justified the interference in the first place ....

11

Distinguished, questioned or overruled (0)

CaseNegativeCited
No negative-treatment citations attached to this issue in New York. Read the followed side critically anyway.

Also cited on this issue (24)

CaseCitedYears
MATTER OF MERSON v. McNally green
ny · 1997
2 sentences

2025In Merson v. McNally ( 90 NY2d 742 , 752—53 [1997]), the Court of Appeals dealt with the "dilemma" of "how to permit an evolving process for identification of environmental concerns and initiatives to meet those concerns yet, on the other hand, to guard against an avoidance of the EIS process through private bilateral negotiations between a developer and a [*12]lead agency when a project may have potentially significant environmental impacts which need full and open consideration." Even assuming arguendo that this framework applies here — and decidedly it does not — the Court of Appeals prescr

2025In Merson v. McNally ( 90 NY2d 742 , 752—53 [1997]), the Court of Appeals dealt with the "dilemma" of "how to permit an evolving process for identification of environmental concerns and initiatives to meet those concerns yet, on the other hand, to guard against an avoidance of the EIS process through private bilateral negotiations between a developer and a [*12]lead agency when a project may have potentially significant environmental impacts which need full and open consideration." Even assuming arguendo that this framework applies here — and decidedly it does not — the Court of Appeals prescr

12025–2025
Schiavone Construction Co. v. Larocca green
nyappdiv · 1986
1 sentence

2022Co. Larocca , 117 AD2d at 443 ; see Morrissey v Brewer , 408 US at 481 ; Matter of Medicon Diagnostic Labs. v Perales , 145 AD2d 167, 172 [1989], affd 74 NY2d 539 [1989]).

12022–2022
Medicon Diagnostic Laboratories, Inc. v. Perales green
ny · 1989
1 sentence

2022Co. Larocca , 117 AD2d at 443 ; see Morrissey v Brewer , 408 US at 481 ; Matter of Medicon Diagnostic Labs. v Perales , 145 AD2d 167, 172 [1989], affd 74 NY2d 539 [1989]).

12022–2022
Amador v. City of New York green
nyappdiv · 2014
1 sentence

2015The plaintiff could rely upon the legal inference that D&D and Gutierrez were negligent, as it was clear from the submissions that their garbage truck struck the van in the rear while the van was in a stopped position at the scene of the accident (see Billis v Tunjian, 120 AD3d 1168 [2014]; Amador v City of New York, 120 AD3d 526 [2014]; Cajas-Romero v Ward, 106 AD3d 850, 851 [2013]; Kertesz v Jason Transp.

12015–2015
Billis v. Tunjian green
nyappdiv · 2014
1 sentence

2015The plaintiff could rely upon the legal inference that D&D and Gutierrez were negligent, as it was clear from the submissions that their garbage truck struck the van in the rear while the van was in a stopped position at the scene of the accident (see Billis v Tunjian, 120 AD3d 1168 [2014]; Amador v City of New York, 120 AD3d 526 [2014]; Cajas-Romero v Ward, 106 AD3d 850, 851 [2013]; Kertesz v Jason Transp.

12015–2015
Dougherty v. . Milliken green
ny · 1900
1 sentence

1999The first requirement is that the opinion testimony “depend upon professional or scientific knowledge or skill not within the range of ordinary training or intelligence” (Dougherty v Milliken, 163 NY 527, 533 ; see also, People v Allweiss, 48 NY2d 40, 50 ).

11999–1999
Callanan Industries, Inc. v. City of Schenectady green
nyappdiv · 1986
1 sentence

1986Since a low bidder does not acquire a property right in a contract (Matter of Callanan Indus. v City of Schenectady, 116 AD2d 883, 884 ; see, Eastway Constr.

11986–1986
Department of Social Services ex rel. Sandra C. v. Thomas J. S. green
nyappdiv · 1984
1 sentence

1985(Pickett v Brown, supra; Matter of Department of Social Servs. v Thomas J.S., 100 AD2d 119 .) (1) The United States Supreme Court has thus held unconstitutional as violative of the equal protection clause a one-year Statute of Limitations in Mills v Habluetzel ( 456 US 91 ) and a two-year Statute of Limitations in Pickett v Brown (supra).

11985–1985
Warn v. . N.Y.C. H.R.R.R. Co. neutral
ny · 1900
1 sentence

1985In New York a twofold test has been adopted for determining admissibility: (1) does the opinion testimony “depend upon professional or scientific knowledge or skill not within the range of ordinary training or intelligence” (Dougherty v Milliken, 163 NY 525 , 533; People v Allweiss, 48 NY2d 40 ) and (2) is the state of the pertinent art or scientific knowledge sufficiently developed to permit a reasonable opinion to be asserted even by an expert (see, People v Leone, 25 NY2d 511; Frye v United States, 293 F 1013, supra; McCormick, Evidence § 13 [Cleary 2d ed 1972]).

11985–1985
United States v. Clark green
scotus · 1980
1 sentence

1985“Such a classification based on illegitimacy is unconstitutional unless it bears ‘an evident and substantial relation to the particular * * * interests this statute is designed to serve.’” (United States v Clark, 445 US 23, 27 .) “[Restrictions on support suits by illegitimate children ‘will survive equal protection scrutiny to the extent they are substantially related to a legitimate state interest.’ ” (Pickett v Brown, 462 US 1, 8 .) Determination of whether the statute impermissibly discriminates between illegitimate and legitimate children and thus violates the equal protection clause, req

11985–1985
Pickett v. Brown green
scotus · 1983
2 sentences

1985“Such a classification based on illegitimacy is unconstitutional unless it bears ‘an evident and substantial relation to the particular * * * interests this statute is designed to serve.’” (United States v Clark, 445 US 23, 27 .) “[Restrictions on support suits by illegitimate children ‘will survive equal protection scrutiny to the extent they are substantially related to a legitimate state interest.’ ” (Pickett v Brown, 462 US 1, 8 .) Determination of whether the statute impermissibly discriminates between illegitimate and legitimate children and thus violates the equal protection clause, req

1985(Pickett v Brown, supra; Matter of Department of Social Servs. v Thomas J.S., 100 AD2d 119 .) (1) The United States Supreme Court has thus held unconstitutional as violative of the equal protection clause a one-year Statute of Limitations in Mills v Habluetzel ( 456 US 91 ) and a two-year Statute of Limitations in Pickett v Brown (supra).

11985–1985
People v. Leone green
ny · 1969
1 sentence

1985In New York a twofold test has been adopted for determining admissibility: (1) does the opinion testimony “depend upon professional or scientific knowledge or skill not within the range of ordinary training or intelligence” (Dougherty v Milliken, 163 NY 525 , 533; People v Allweiss, 48 NY2d 40 ) and (2) is the state of the pertinent art or scientific knowledge sufficiently developed to permit a reasonable opinion to be asserted even by an expert (see, People v Leone, 25 NY2d 511; Frye v United States, 293 F 1013, supra; McCormick, Evidence § 13 [Cleary 2d ed 1972]).

11985–1985
People v. Henson green
ny · 1973
1 sentence

1985The law is settled that the admissibility and bounds of expert testimony rest primarily within the sound discretion of the trial court (People v Henson, 33 NY2d 63 ).

11985–1985
Mills v. Habluetzel green
scotus · 1982
1 sentence

1985(Pickett v Brown, supra; Matter of Department of Social Servs. v Thomas J.S., 100 AD2d 119 .) (1) The United States Supreme Court has thus held unconstitutional as violative of the equal protection clause a one-year Statute of Limitations in Mills v Habluetzel ( 456 US 91 ) and a two-year Statute of Limitations in Pickett v Brown (supra).

11985–1985
People v. Parker green
ny · 1982
2 sentences

1983As I read it, Parker (supra) requires a twofold analysis: (1) Is the defendant voluntarily absent?, and (2) Has the defendant knowingly, intelligently, and voluntarily waived the right to be present?

1983While admitting that there are occasions when a defendant’s conduct may imply a waiver, the existence of a constitutional right requires that the defendant, “at a minimum”, be warned of the consequences of this waiver (People v Parker, supra, p 141 ).

11983–1983
People v. Collins green
nysupct · 1978
1 sentence

1982Voice spectrogram analysis has reached the standards of scientific acceptance and reliability necessary for its admissibility into evidence with ultimate consideration by the trier of facts.” In People v Collins (supra), the court concluded that the twofold test of reliability and general scientific acceptance must be applied to determine the admissibility of spectro graphic analysis for voice identification.

11982–1982
Boyd v. United States red
scotus · 1886
11981–1981
People v. Doe neutral
nycountyct · 1981
2 sentences

1981Proceeding from the proposition ( 110 Misc 2d 595, 599 , supra) that a subpoena duces tecum “can constitute an unreasonable search and seizure”, citing Boyd v United States ( 116 US 616, 622 ), 14 and applying a twofold test 15 to determine whether Tempera had an interest in the disclosure statements that was protected by the Fourth Amendment, the County Court stated its ultimate conclusion as follows (p 603): “Inasmuch as the local law created an expectation of privacy in [Tempera’s] financial statement which [he] relied upon and inasmuch as the local law created an expectation of privacy in

1981Accordingly, the subpoena must be quashed.” In the course of its analysis, the County Court ( 110 Misc 2d, at p 601 ) noted its recognition that the United States Supreme Court “has held that a person having no proprietary interest in documents belonging to a third party cannot assert the Fourth Amendment to prevent their compelled production by the third party (see United States v Miller, 425 US 435 * * * California Bankers Assn. v Schultz, 416 US 21 *** Donaldson v United States, 400 US 517 ).” However, the County Court distinguished those cases as follows (pp 601-602): “[T]he ratio decidend

11981–1981
Lopez v. United States green
scotus · 1963
11981–1981
Donaldson v. United States red
scotus · 1971
1 sentence

1981Accordingly, the subpoena must be quashed.” In the course of its analysis, the County Court ( 110 Misc 2d, at p 601 ) noted its recognition that the United States Supreme Court “has held that a person having no proprietary interest in documents belonging to a third party cannot assert the Fourth Amendment to prevent their compelled production by the third party (see United States v Miller, 425 US 435 * * * California Bankers Assn. v Schultz, 416 US 21 *** Donaldson v United States, 400 US 517 ).” However, the County Court distinguished those cases as follows (pp 601-602): “[T]he ratio decidend

11981–1981
California Bankers Assn. v. Shultz green
scotus · 1974
1 sentence

1981Accordingly, the subpoena must be quashed.” In the course of its analysis, the County Court ( 110 Misc 2d, at p 601 ) noted its recognition that the United States Supreme Court “has held that a person having no proprietary interest in documents belonging to a third party cannot assert the Fourth Amendment to prevent their compelled production by the third party (see United States v Miller, 425 US 435 * * * California Bankers Assn. v Schultz, 416 US 21 *** Donaldson v United States, 400 US 517 ).” However, the County Court distinguished those cases as follows (pp 601-602): “[T]he ratio decidend

11981–1981
United States v. White green
scotus · 1971
1 sentence

1981Id., at 752 ; Hoffa v. United States, 385 U.S. [293], at 302; Lopez v. United States, 373 U.S. 427 (1963).” The County Court distinguished the instant case from Miller , on the ground that under the twofold test enunciated by Justice Harlan in Katz v United States (supra), Tempera has a “reasonable expectation of privacy” in the financial disclosure statements he filed with the board, arising out of the nondisclosure provisions of the Disclosure Law.

11981–1981
United States v. Miller red
scotus · 1976
11981–1981
In re the Arbitration between the Acting Superintendent of Schools of Liverpool Central School District v. United Liverpool Faculty Ass'n green
ny · 1977
11978–1978

Where else courts name it

CT 37 (1982–2015) CA 27 (1955–2021) IL 26 (1974–2025) LA 26 (1975–2023) PA 22 (1980–2025) OH 22 (1966–2023) NY 17 (1978–2025) NC 15 (1954–2024) AL 15 (1987–2014) OR 11 (1971–1985) HI 11 (1982–2025) MD 11 (1925–2018) ND 8 (1983–2012) TX 8 (1982–2014) WA 7 (1983–2013) NJ 7 (1970–1995) AK 7 (1973–2009) MO 6 (1881–2018) WI 6 (1976–2013) MI 6 (1972–2008) SD 6 (1986–2008) DC 6 (1975–2011) FL 6 (1977–1993) NM 5 (1974–2014) MA 5 (1982–2013) IN 4 (1981–2002) CO 4 (1975–2021) NH 4 (2003–2007) IA 4 (2008–2022) KY 3 (1955–2017) AZ 3 (1985–1993) WV 3 (1985–2007) KS 2 (2010–2015) VT 2 (1991–2002) DE 2 (1980–2016) TN 2 (1979–2014) UT 2 (1989–1997) OK 2 (1982–1982) MS 2 (2020–2022)

Opinions by the citing court's state. A doctrine retained in one state and abandoned in another shows up here as a year span that stalls.

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