Compounds > 3,4-methylenedioxyamphetamine

3,4-methylenedioxyamphetamine and cocaine

3,4-methylenedioxyamphetamine has been researched along with cocaine in 37 studies

Research

Studies (37)

Timeframe	Studies, this research(%)	All Research%
pre-1990	5 (13.51)	18.7374
1990's	10 (27.03)	18.2507
2000's	12 (32.43)	29.6817
2010's	7 (18.92)	24.3611
2020's	3 (8.11)	2.80

Authors

Authors	Studies
Arunotayanun, W; Dalley, JW; Gibbons, S; Huang, XP; Iversen, L; Roth, BL; Setola, V; Treble, R	1
Glennon, RA	1
Azmitia, EC; Berger, UV; Gu, XF	1
Bush, LG; Gibb, JW; Hanson, GR; Johnson, M; Midgley, L	1
Markert, LE; Roberts, DC	1
Kimes, AS; London, ED; Ori, C; Wilkerson, G	1
Gold, LH; Koob, GF	1
Balster, RL; Beardsley, PM; Harris, LS	1
Griffiths, RR; Lamb, RJ	1
Glennon, RA; Young, R	1
Azmitia, EC; Kramer, K; Whitaker-Azmitia, PM	1
Kauert, G; Röhrich, J	1
Fierro, MF; Moore, KA; Mozayani, A; Poklis, A	1
Barrio Anta, G; de la Fuente de Hoz, L; Rodríguez Arenas, MA; Sánchez Payá, J; Vicente Orta, J	1
Baker, LE; Taylor, MM	1
Fleckenstein, AE; Hanson, GR; Riddle, EL; Sandoval, V; Ugarte, YV	1
Backofen, U; Hoffmann, W; Lunte, CE; Matysik, FM	1
Mirken, B	1
Cleary, L; Docherty, JR	1
Cobain, K; Corkery, J; Ghodse, AH; Jambert-Gray, R; Martinotti, G; Oyefeso, A; Schifano, F	1
Becker, KG; Cheadle, C; Donovan, DM; McCann, UD; Mechan, AO; Ricaurte, GA; Tong, L; Xie, T; Yuan, J	1
Hugel, J; Kalasinsky, KS; Kish, SJ	1
Hatzidimitriou, G; Irvine, RJ; McCann, UD; Mechan, A; Ricaurte, GA; Yuan, J	1
Ehrman, LA; Gudelsky, GA; Schaefer, TL; Vorhees, CV; Williams, MT	1
de la Torre, R; Di Giovannandrea, R; Jurado, C; Langohr, K; Pacifici, R; Pichini, S; Pujadas, M; Ventura, M; Ventura, R; Zuccaro, P	1
Jones, AW	1
Bafile, E; Compagnone, D; Curini, R; D'Ascenzo, G; Romolo, FS; Sergi, M	1
Inoue, H; Miyaguchi, H	1
Hermans, E; Hondebrink, L; Meulenbelt, J; Tan, S; van Kleef, RG; Westerink, RH	1
Covaci, A; Kinyua, J; Mardal, M; Meyer, MR; Miserez, B; Ramin, P; Van Nuijs, AL	1
Edwards, QA; Garner-O'Neale, LD; Kulikov, SM; Metcalfe, CD; Sultana, T; Yargeau, V	1
Burgueño, MJ; Castro, MÁ; Mateos-Campos, R; Sánchez, S	1
Cui, J; Liu, W; Shen, B; Shen, M; Wang, X; Xiang, P; Zhang, S; Zhuo, Y	1
Bade, R; Gerber, C; Nguyen, L; Pandopulos, AJ; White, JM	1
Coulter, C; Garnier, M; Moore, C	1
GUBALKE, W	1
Jefson, C	1

Reviews

1 review(s) available for 3,4-methylenedioxyamphetamine and cocaine

Article	Year
Distribution of 3,4-methylenedioxymethamphetamine (MDMA) and 3,4-methylenedioxyamphetamine (MDA) stereoisomers in a fatal poisoning. Forensic science international, 1996, Dec-02, Volume: 83, Issue:2 Topics: 3,4-Methylenedioxyamphetamine; Adult; Cocaine; Fatal Outcome; Gas Chromatography-Mass Spectrometry; Heroin; Humans; Male; N-Methyl-3,4-methylenedioxyamphetamine; Narcotics; Stereoisomerism; Tissue Distribution	1996

Article

Year

Distribution of 3,4-methylenedioxymethamphetamine (MDMA) and 3,4-methylenedioxyamphetamine (MDA) stereoisomers in a fatal poisoning.

Forensic science international, 1996, Dec-02, Volume: 83, Issue:2

Topics: 3,4-Methylenedioxyamphetamine; Adult; Cocaine; Fatal Outcome; Gas Chromatography-Mass Spectrometry; Heroin; Humans; Male; N-Methyl-3,4-methylenedioxyamphetamine; Narcotics; Stereoisomerism; Tissue Distribution

1996

Other Studies

36 other study(ies) available for 3,4-methylenedioxyamphetamine and cocaine

Article	Year
An analysis of the synthetic tryptamines AMT and 5-MeO-DALT: emerging 'Novel Psychoactive Drugs'. Bioorganic & medicinal chemistry letters, 2013, Jun-01, Volume: 23, Issue:11 Topics: Allyl Compounds; HEK293 Cells; Humans; Indoles; Magnetic Resonance Spectroscopy; Molecular Conformation; Propylamines; Protein Binding; Psychotropic Drugs; Receptors, Serotonin; Serotonin Receptor Agonists; Spectrophotometry, Ultraviolet; Tryptamines	2013
The 2014 Philip S. Portoghese Medicinal Chemistry Lectureship: The "Phenylalkylaminome" with a Focus on Selected Drugs of Abuse. Journal of medicinal chemistry, 2017, 04-13, Volume: 60, Issue:7 Topics: Animals; Central Nervous System Stimulants; Chemistry, Pharmaceutical; Dopamine; Drug Discovery; Hallucinogens; Humans; Illicit Drugs; Norepinephrine; Phenethylamines; Psychotropic Drugs; Receptors, Serotonin; Serotonin	2017
The substituted amphetamines 3,4-methylenedioxymethamphetamine, methamphetamine, p-chloroamphetamine and fenfluramine induce 5-hydroxytryptamine release via a common mechanism blocked by fluoxetine and cocaine. European journal of pharmacology, 1992, May-14, Volume: 215, Issue:2-3 Topics: 3,4-Methylenedioxyamphetamine; Amphetamines; Animals; Calcium; Cocaine; Fenfluramine; Fluoxetine; In Vitro Techniques; Male; Methamphetamine; N-Methyl-3,4-methylenedioxyamphetamine; p-Chloroamphetamine; Potassium Chloride; Rats; Rats, Sprague-Dawley; Receptors, Serotonin; Serotonin; Serotonin Antagonists; Synaptosomes	1992
MK-801 blocks the changes in neurotensin concentrations induced by methamphetamine, 3,4-methylenedioxymethamphetamine, cocaine, and GBR 12909. Annals of the New York Academy of Sciences, 1992, Volume: 668 Topics: 3,4-Methylenedioxyamphetamine; Animals; Cocaine; Dizocilpine Maleate; Male; Methamphetamine; Neurotensin; Piperazines; Rats; Rats, Sprague-Dawley	1992
3,4-Methylenedioxyamphetamine (MDA) self-administration and neurotoxicity. Pharmacology, biochemistry, and behavior, 1991, Volume: 39, Issue:3 Topics: 3,4-Methylenedioxyamphetamine; Animals; Biogenic Monoamines; Brain Chemistry; Chromatography, High Pressure Liquid; Cocaine; Corpus Striatum; Dose-Response Relationship, Drug; Hippocampus; Male; Nervous System Diseases; Nucleus Accumbens; Prosencephalon; Rats; Rats, Inbred Strains; Reinforcement Schedule; Self Administration; Serotonin	1991
Central action of psychomotor stimulants on glucose utilization in extrapyramidal motor areas of the rat brain. Brain research, 1990, Mar-26, Volume: 512, Issue:1 Topics: 3,4-Methylenedioxyamphetamine; Amphetamines; Animals; Brain; Cocaine; Designer Drugs; Glucose; Male; Movement; N-Methyl-3,4-methylenedioxyamphetamine; Phencyclidine; Rats; Rats, Inbred F344	1990
MDMA produces stimulant-like conditioned locomotor activity. Psychopharmacology, 1989, Volume: 99, Issue:3 Topics: 3,4-Methylenedioxyamphetamine; Amphetamine; Amphetamines; Animals; Central Nervous System Stimulants; Cocaine; Conditioning, Operant; Male; Motor Activity; N-Methyl-3,4-methylenedioxyamphetamine; Rats; Rats, Inbred Strains	1989
Self-administration of methylenedioxymethamphetamine (MDMA) by rhesus monkeys. Drug and alcohol dependence, 1986, Volume: 18, Issue:2 Topics: 3,4-Methylenedioxyamphetamine; Amphetamines; Animals; Cocaine; Macaca mulatta; Male; N-Methyl-3,4-methylenedioxyamphetamine; Self Administration	1986
Self-injection of d,1-3,4-methylenedioxymethamphetamine (MDMA) in the baboon. Psychopharmacology, 1987, Volume: 91, Issue:3 Topics: 3,4-Methylenedioxyamphetamine; Amphetamines; Animals; Cocaine; Male; N-Methyl-3,4-methylenedioxyamphetamine; Papio; Self Administration	1987
MDA: an agent that produces stimulus effects similar to those of 3,4-DMA, LSD and cocaine. European journal of pharmacology, 1984, Mar-23, Volume: 99, Issue:2-3 Topics: 3,4-Methylenedioxyamphetamine; Amphetamines; Animals; Central Nervous System Stimulants; Cocaine; Discrimination, Psychological; Lysergic Acid Diethylamide; Rats; Rats, Inbred Strains; Respiration; Structure-Activity Relationship	1984
In vitro release of [3H]5-hydroxytryptamine from fetal and maternal brain by drugs of abuse. Brain research. Developmental brain research, 1994, Mar-18, Volume: 78, Issue:1 Topics: 3,4-Methylenedioxyamphetamine; Animals; Brain; Brain Chemistry; Cocaine; Designer Drugs; Female; Fenfluramine; In Vitro Techniques; Maternal-Fetal Exchange; N-Methyl-3,4-methylenedioxyamphetamine; Potassium Chloride; Pregnancy; Rats; Rats, Sprague-Dawley; Serotonin; Substance-Related Disorders; Synaptosomes	1994
Concentrations of delta 9-tetrahydrocannabinol, cocaine and 6-monoacetylmorphine in hair of drug abusers. International journal of legal medicine, 1996, Volume: 108, Issue:6 Topics: 3,4-Methylenedioxyamphetamine; Accidents, Traffic; Amphetamine; Cocaine; Crime; Designer Drugs; Dronabinol; Expert Testimony; Gas Chromatography-Mass Spectrometry; Hair; Heroin Dependence; Humans; Illicit Drugs; Marijuana Abuse; Morphine Derivatives; N-Methyl-3,4-methylenedioxyamphetamine; Opioid-Related Disorders; Psychotropic Drugs; Sensitivity and Specificity	1996
[Epidemiology of designer drug use in Spain]. Medicina clinica, 1997, Jan-18, Volume: 108, Issue:2 Topics: 3,4-Methylenedioxyamphetamine; Adolescent; Adult; Cocaine; Designer Drugs; Female; Heroin; Humans; Male; N-Methyl-3,4-methylenedioxyamphetamine; Prevalence; Spain; Substance-Related Disorders	1997
Assessment of the MDA and MDMA optical isomers in a stimulant-hallucinogen discrimination. Pharmacology, biochemistry, and behavior, 1997, Volume: 57, Issue:4 Topics: 3,4-Methylenedioxyamphetamine; Animals; Cocaine; Discrimination Learning; DOM 2,5-Dimethoxy-4-Methylamphetamine; Food; Generalization, Psychological; Hallucinogens; Lysergic Acid Diethylamide; Male; Mescaline; N-Methyl-3,4-methylenedioxyamphetamine; Narcotics; Rats; Rats, Sprague-Dawley; Reinforcement, Psychology; Stereoisomerism	1997
Methamphetamine-induced rapid and reversible changes in dopamine transporter function: an in vitro model. The Journal of neuroscience : the official journal of the Society for Neuroscience, 2001, Feb-15, Volume: 21, Issue:4 Topics: 3,4-Methylenedioxyamphetamine; Animals; Biological Transport; Carrier Proteins; Cocaine; Corpus Striatum; Dopamine; Dopamine Plasma Membrane Transport Proteins; Dose-Response Relationship, Drug; Enzyme Inhibitors; In Vitro Techniques; Male; Membrane Glycoproteins; Membrane Potentials; Membrane Transport Proteins; Methamphetamine; Methylphenidate; Models, Biological; Nerve Tissue Proteins; Norepinephrine; Onium Compounds; Organophosphorus Compounds; Phosphorylation; Protein Kinase C; Rats; Rats, Sprague-Dawley; Serotonin; Synaptosomes	2001
Analysis of illicit drugs by nonaqueous capillary electrophoresis and electrochemical detection. Fresenius' journal of analytical chemistry, 2000, Volume: 367, Issue:4 Topics: 3,4-Methylenedioxyamphetamine; Acetonitriles; Amphetamines; Cocaine; Electrophoresis, Capillary; Hallucinogens; Humans; N-Methyl-3,4-methylenedioxyamphetamine; Sensitivity and Specificity; Substance Abuse Detection	2000
Danger: possibly fatal interactions between ritonavir and "ecstasy," some other psychoactive drugs. AIDS treatment news, 1997, Feb-21, Issue:No 265 Topics: 3,4-Methylenedioxyamphetamine; Amphetamine; Cocaine; Drug Interactions; Fatal Outcome; Hallucinogens; Heroin; HIV Protease Inhibitors; Humans; Illicit Drugs; Male; Methadone; Ritonavir	1997
Actions of amphetamine derivatives and cathinone at the noradrenaline transporter. European journal of pharmacology, 2003, Aug-22, Volume: 476, Issue:1-2 Topics: 3,4-Methylenedioxyamphetamine; Adrenergic Uptake Inhibitors; Alkaloids; Amphetamines; Animals; Cerebral Cortex; Cocaine; Competitive Bidding; Fluoxetine; In Vitro Techniques; Male; Myocardium; N-Methyl-3,4-methylenedioxyamphetamine; Norepinephrine Plasma Membrane Transport Proteins; Rats; Rats, Wistar; Symporters	2003
Death rates from ecstasy (MDMA, MDA) and polydrug use in England and Wales 1996-2002. Human psychopharmacology, 2003, Volume: 18, Issue:7 Topics: 3,4-Methylenedioxyamphetamine; Adolescent; Adult; Amphetamine-Related Disorders; Benzodiazepines; Cannabinoids; Cocaine; Drug Interactions; England; Ethanol; Female; Hallucinogens; Heroin; Humans; Male; N-Methyl-3,4-methylenedioxyamphetamine; Wales	2003
Identification and characterization of metallothionein-1 and -2 gene expression in the context of (+/-)3,4-methylenedioxymethamphetamine-induced toxicity to brain dopaminergic neurons. The Journal of neuroscience : the official journal of the Society for Neuroscience, 2004, Aug-11, Volume: 24, Issue:32 Topics: 3,4-Methylenedioxyamphetamine; Animals; Blotting, Northern; Brain; Cocaine; Dopamine; Dopamine Uptake Inhibitors; Illicit Drugs; Male; Metallothionein; Methamphetamine; Mice; Mice, Knockout; Neurons; Neuroprotective Agents; Oligonucleotide Array Sequence Analysis; RNA, Messenger; Time Factors	2004
Use of MDA (the "love drug") and methamphetamine in Toronto by unsuspecting users of ecstasy (MDMA). Journal of forensic sciences, 2004, Volume: 49, Issue:5 Topics: 3,4-Methylenedioxyamphetamine; Adult; Amphetamine; Canada; Cocaine; Dopamine Uptake Inhibitors; Drug Contamination; Female; Forensic Medicine; Gas Chromatography-Mass Spectrometry; Hair; Hallucinogens; Humans; Illicit Drugs; Male; Methamphetamine; Molecular Structure; N-Methyl-3,4-methylenedioxyamphetamine; Phencyclidine	2004
Pharmacokinetic profile of single and repeated oral doses of MDMA in squirrel monkeys: relationship to lasting effects on brain serotonin neurons. Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2006, Volume: 31, Issue:2 Topics: 3,4-Methylenedioxyamphetamine; Administration, Oral; Analysis of Variance; Animals; Brain; Brain Chemistry; Chromatography, High Pressure Liquid; Cocaine; Dose-Response Relationship, Drug; Drug Administration Routes; Drug Administration Schedule; Drug Interactions; Electrochemistry; Female; Hallucinogens; Male; N-Methyl-3,4-methylenedioxyamphetamine; Neurons; Protein Binding; Radiopharmaceuticals; Saimiri; Serotonin; Serotonin Plasma Membrane Transport Proteins; Time Factors	2006
Comparison of monoamine and corticosterone levels 24 h following (+)methamphetamine, (+/-)3,4-methylenedioxymethamphetamine, cocaine, (+)fenfluramine or (+/-)methylphenidate administration in the neonatal rat. Journal of neurochemistry, 2006, Volume: 98, Issue:5 Topics: 3,4-Methylenedioxyamphetamine; Analysis of Variance; Animals; Animals, Newborn; Behavior, Animal; Biogenic Monoamines; Body Weight; Brain Chemistry; Chromatography, High Pressure Liquid; Cocaine; Corpus Striatum; Corticosterone; Electrochemistry; Female; Fenfluramine; Hippocampus; Immunoenzyme Techniques; Male; Maze Learning; Methamphetamine; Methylphenidate; Neurotransmitter Uptake Inhibitors; Pregnancy; Rats; Rats, Sprague-Dawley	2006
Four years' experience in external proficiency testing programs for hair testing of drugs of abuse in Italy (HAIRVEQ) and comparison with the Society of Hair Testing program in 2005. Therapeutic drug monitoring, 2007, Volume: 29, Issue:1 Topics: 3,4-Methylenedioxyamphetamine; Clinical Laboratory Techniques; Cocaine; Codeine; False Negative Reactions; False Positive Reactions; Forensic Medicine; Hair; Humans; Italy; Laboratories; Morphine; Morphine Derivatives; N-Methyl-3,4-methylenedioxyamphetamine; Narcotics; Opioid Peptides; Program Evaluation; Reproducibility of Results; Spain; Statistical Distributions; Substance Abuse Detection; Time Factors	2007
Elimination half-lives of benzoylecgonine and MDMA in an apprehended driver. Journal of analytical toxicology, 2008, Volume: 32, Issue:2 Topics: 3,4-Methylenedioxyamphetamine; Adult; Amphetamine; Automobile Driving; Cocaine; Forensic Toxicology; Half-Life; Hallucinogens; Humans; Male; N-Methyl-3,4-methylenedioxyamphetamine; Substance Abuse Detection	2008
Multiclass analysis of illicit drugs in plasma and oral fluids by LC-MS/MS. Analytical and bioanalytical chemistry, 2009, Volume: 393, Issue:2 Topics: 3,4-Methylenedioxyamphetamine; Amphetamine; Body Fluids; Calibration; Chromatography, High Pressure Liquid; Cocaine; Dronabinol; Humans; Illicit Drugs; Ketamine; Methamphetamine; Morphine; Morphine Derivatives; N-Methyl-3,4-methylenedioxyamphetamine; Phencyclidine; Sensitivity and Specificity; Tandem Mass Spectrometry; Time Factors	2009
Determination of amphetamine-type stimulants, cocaine and ketamine in human hair by liquid chromatography/linear ion trap-Orbitrap hybrid mass spectrometry. The Analyst, 2011, Sep-07, Volume: 136, Issue:17 Topics: 3,4-Methylenedioxyamphetamine; Amphetamines; Chromatography, Liquid; Cocaine; Hair; Humans; Illicit Drugs; Ketamine; Limit of Detection; Methamphetamine; N-Methyl-3,4-methylenedioxyamphetamine; Tandem Mass Spectrometry	2011
Additive inhibition of human α1β2γ2 GABAA receptors by mixtures of commonly used drugs of abuse. Neurotoxicology, 2013, Volume: 35 Topics: 3,4-Methylenedioxyamphetamine; Animals; Cocaine; Dose-Response Relationship, Drug; Drug Interactions; GABA Antagonists; Humans; Membrane Potentials; N-Methyl-3,4-methylenedioxyamphetamine; Oocytes; Patch-Clamp Techniques; Piperazines; Receptors, GABA-A; Xenopus laevis	2013
Screening for illicit drugs in pooled human urine and urinated soil samples and studies on the stability of urinary excretion products of cocaine, MDMA, and MDEA in wastewater by hyphenated mass spectrometry techniques. Drug testing and analysis, 2017, Volume: 9, Issue:1 Topics: 3,4-Methylenedioxyamphetamine; Adrenergic Uptake Inhibitors; Cocaine; Dopamine Uptake Inhibitors; Environmental Pollutants; Humans; Illicit Drugs; Limit of Detection; N-Methyl-3,4-methylenedioxyamphetamine; Soil; Substance Abuse Detection; Wastewater	2017
Contaminants of Emerging Concern in Wastewaters in Barbados, West Indies. Bulletin of environmental contamination and toxicology, 2018, Volume: 101, Issue:1 Topics: 3,4-Methylenedioxyamphetamine; Androstenedione; Barbados; Caffeine; Chromatography, Liquid; Cocaine; Environmental Monitoring; Estrone; Ibuprofen; N-Methyl-3,4-methylenedioxyamphetamine; Tandem Mass Spectrometry; Wastewater; Water Pollutants, Chemical	2018
[High-risk drug use: epidemiological pattern through hair testing in the forensic context]. Revista espanola de salud publica, 2019, Nov-26, Volume: 93 Topics: 3,4-Methylenedioxyamphetamine; Adolescent; Adult; Amphetamine; Cannabinoids; Cocaine; Cross-Sectional Studies; Female; Forensic Sciences; Gas Chromatography-Mass Spectrometry; Hair; Heroin; Humans; Illicit Drugs; Ketamine; Male; Methadone; Methamphetamine; Middle Aged; N-Methyl-3,4-methylenedioxyamphetamine; Prevalence; Spain; Substance Abuse Detection; Substance-Related Disorders; Young Adult	2019
A Retrospective of Prevalence of Drugs of Abuse by Hair Analysis in Shanghai using LC-MS-MS. Journal of analytical toxicology, 2020, Apr-02, Volume: 44, Issue:5 Topics: 3,4-Methylenedioxyamphetamine; Adult; Amphetamines; Central Nervous System Stimulants; China; Chromatography, Liquid; Cocaine; Female; Hair; Hair Analysis; Humans; Illicit Drugs; Male; Methamphetamine; Morphine Derivatives; N-Methyl-3,4-methylenedioxyamphetamine; Prevalence; Retrospective Studies; Substance Abuse Detection; Substance-Related Disorders; Tandem Mass Spectrometry	2020
What is the drug of choice of young festivalgoers? Drug and alcohol dependence, 2020, 11-01, Volume: 216 Topics: 3,4-Methylenedioxyamphetamine; Australia; Cocaine; Hallucinogens; Holidays; Humans; Illicit Drugs; Mass Spectrometry; N-Methyl-3,4-methylenedioxyamphetamine; Substance Abuse Detection; Substance-Related Disorders; Wastewater	2020
Rapid Extraction and Qualitative Screening of 30 Drugs in Oral Fluid at Concentrations Recommended for the Investigation of DUID Cases. Journal of analytical toxicology, 2022, Oct-14, Volume: 46, Issue:8 Topics: 2-Propanol; 3,4-Methylenedioxyamphetamine; Alprazolam; Amphetamines; Buprenorphine; Carisoprodol; Clonazepam; Cocaine; Codeine; Dronabinol; Fentanyl; Hexanes; Hydrocodone; Hydromorphone; Lorazepam; Meprobamate; Methadone; Methamphetamine; Morphine Derivatives; N-Methyl-3,4-methylenedioxyamphetamine; Nordazepam; Oxazepam; Oxycodone; Oxymorphone; Pharmaceutical Preparations; Phencyclidine; Tandem Mass Spectrometry; Temazepam; Tramadol; Zolpidem	2022
[Love-potions, human fat and confectionery. Oddities at the Heidelberg Pharmacy Tower]. Munchener medizinische Wochenschrift (1950), 1962, Nov-23, Volume: 104 Topics: Candy; Humans; Love; Museums; Pharmaceutical Services; Pharmacies; Pharmacy	1962
Candy hearts: messages about love, lust, and infatuation. The Journal of school health, 2006, Volume: 76, Issue:3 Topics: Adolescent; Candy; Communication; Female; Humans; Interpersonal Relations; Love; Male; Teaching; United States	2006