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Volumn 2, Issue 2, 2010, Pages 165-179

The Role of Ecological Constraints on Expertise Development

Author keywords

Association football; Development; Ecological psychology; Environmental constrains; Expertise

Indexed keywords


EID: 84864930232     PISSN: 18690459     EISSN: 18692885     Source Type: Journal    
DOI: None     Document Type: Article
Times cited : (77)

References (64)
  • 1
    • 74949114815 scopus 로고    scopus 로고
    • Introduction: Developing expertise in sport - how research can inform practice
    • D. Farrow, J. Baker, & C. MacMahon (Eds.). London: Routledge
    • Abernethy, B. (2008). Introduction: Developing expertise in sport - how research can inform practice. In D. Farrow, J. Baker, & C. MacMahon (Eds.), Developing sport expertise (pp. 1-14). London: Routledge.
    • (2008) Developing sport expertise , pp. 1-14
    • Abernethy, B.1
  • 2
    • 62749117270 scopus 로고    scopus 로고
    • Ecological approaches to cognition and action in sport and exercise: Ask not only what you do, but where you do it
    • Araújo, D., & Davids, K. (2009). Ecological approaches to cognition and action in sport and exercise: Ask not only what you do, but where you do it. International Journal of Sport Psychology, 40, 5-37.
    • (2009) International Journal of Sport Psychology , vol.40 , pp. 5-37
    • Araújo, D.1    Davids, K.2
  • 3
    • 34147125014 scopus 로고    scopus 로고
    • Promoting ecologies where performers exhibit expert interactions
    • Araújo, D. (2007). Promoting ecologies where performers exhibit expert interactions. International Journal of Sport Psychology, 38, 73-77.
    • (2007) International Journal of Sport Psychology , vol.38 , pp. 73-77
    • Araújo, D.1
  • 4
    • 27944438416 scopus 로고    scopus 로고
    • An ecological approach to expertise effects in decision-making in a simulated sailing regatta
    • Araújo, D., Davids, K., & Serpa, S. (2005). An ecological approach to expertise effects in decision-making in a simulated sailing regatta. Psychology of Sport and Exercise, 6, 671-692.
    • (2005) Psychology of Sport and Exercise , vol.6 , pp. 671-692
    • Araújo, D.1    Davids, K.2    Serpa, S.3
  • 6
    • 84864945562 scopus 로고    scopus 로고
    • [Zico - 50 Years of Football]. Rio de Janeiro: Editora Record
    • Assaf, R., & Garcia, R. (2003). Zico - 50 Anos de Futebol [Zico - 50 Years of Football]. Rio de Janeiro: Editora Record.
    • (2003) Zico - 50 Anos de Futebol
    • Assaf, R.1    Garcia, R.2
  • 7
    • 0345060536 scopus 로고    scopus 로고
    • Early specialization in youth sport: A requirement for adult expertise?
    • Baker, J. (2003). Early specialization in youth sport: A requirement for adult expertise? High Ability Studies, 14, 85-94.
    • (2003) High Ability Studies , vol.14 , pp. 85-94
    • Baker, J.1
  • 8
    • 11344257230 scopus 로고    scopus 로고
    • A review of primary and secondary influences on sport expertise
    • Baker, J., & Horton, S. (2004). A review of primary and secondary influences on sport expertise. High Ability Studies, 15, 211-228.
    • (2004) High Ability Studies , vol.15 , pp. 211-228
    • Baker, J.1    Horton, S.2
  • 10
    • 0036350769 scopus 로고    scopus 로고
    • Smart people or smart contexts? Cognition, ability, and talent development in an age of situated approaches to knowing and learning
    • Barab, S., & Plucker, J. (2002). Smart people or smart contexts? Cognition, ability, and talent development in an age of situated approaches to knowing and learning. Educational Psychologist, 37(1), 165-182.
    • (2002) Educational Psychologist , vol.37 , Issue.1 , pp. 165-182
    • Barab, S.1    Plucker, J.2
  • 11
    • 0344354112 scopus 로고
    • The aftermath of early sports specialization for highly qualified swimmers
    • Barynina, I. I., & Vaitsekhovskii, S. M. (1992). The aftermath of early sports specialization for highly qualified swimmers. Fitness and Sports Review International, 27(4), 132-133.
    • (1992) Fitness and Sports Review International , vol.27 , Issue.4 , pp. 132-133
    • Barynina, I.I.1    Vaitsekhovskii, S.M.2
  • 15
    • 35348960586 scopus 로고    scopus 로고
    • The bioecological model of human development
    • Theoretical models of human development (6th ed., ) W. Damon & R. M. Lerner (Ed.) New York: John Wiley.p
    • Bronfenbrenner, U., & Morris, P. (2006). The bioecological model of human development. In W. Damon & R. M. Lerner (Ed.), Handbook of child psychology: Vol. 1. Theoretical models of human development (6th ed., pp. 793-828). New York: John Wiley.
    • (2006) Handbook of child psychology , vol.1 , pp. 793-828
    • Bronfenbrenner, U.1    Morris, P.2
  • 17
    • 84864945566 scopus 로고    scopus 로고
    • [Artistry Football x Rational Football: From the streets to the football schools]. Retrieved from
    • Cabral, G. M., & Neves, R. L. R. (2007). Futebol arte x futebol racional: Das ruas as escolinhas de futebol [Artistry Football x Rational Football: From the streets to the football schools]. Retrieved from: http://www.efdeportes.com/ efd111/futebol-das-ruas-as-escolinhas-de-futebol.htm
    • (2007) Futebol arte x futebol racional: Das ruas as escolinhas de futebol
    • Cabral, G.M.1    Neves, R.L.R.2
  • 18
    • 84928505083 scopus 로고
    • The socialization of elite tennis players in Sweden: An analysis of the players' backgrounds and development
    • Carlson, R. C. (1988). The socialization of elite tennis players in Sweden: An analysis of the players' backgrounds and development. Sociology of Sport Journal, 5, 241-256.
    • (1988) Sociology of Sport Journal , vol.5 , pp. 241-256
    • Carlson, R.C.1
  • 19
  • 20
    • 61049512527 scopus 로고    scopus 로고
    • Informal learning of musical instruments: The importance of social context
    • Cope, P. (2002). Informal learning of musical instruments: The importance of social context. Music Education Research, 4, 93-104.
    • (2002) Music Education Research , vol.4 , pp. 93-104
    • Cope, P.1
  • 21
    • 0001181914 scopus 로고    scopus 로고
    • The influence of the family in the development of talent in sport
    • Côté, J. (1999). The influence of the family in the development of talent in sport. The Sport Psychologist, 13, 395-417.
    • (1999) The Sport Psychologist , vol.13 , pp. 395-417
    • Côté, J.1
  • 22
    • 11344269155 scopus 로고    scopus 로고
    • From play to practice: A developmental framework for the acquisition of expertise in team sports
    • J. Starkes & K. A. Ericsson (Eds.) . Champaign, IL: Human Kinetics
    • Côté, J., Baker, J., & Abernethy, B. (2003). From play to practice: A developmental framework for the acquisition of expertise in team sports. In J. Starkes & K. A. Ericsson (Eds.) Expert performance in sports: Advances in research on sport expertise (pp. 89-110). Champaign, IL: Human Kinetics.
    • (2003) Expert performance in sports: Advances in research on sport expertise , pp. 89-110
    • Côté, J.1    Baker, J.2    Abernethy, B.3
  • 23
    • 84886205073 scopus 로고    scopus 로고
    • Practice and play in the development of sport expertise
    • (3rd ed.) G. Tenenbaum & R. Eklund (Eds.)Hoboken, NJ: Wiley.
    • Côté, J., Baker, J., & Abernethy, B. (2007). Practice and play in the development of sport expertise. In G. Tenenbaum & R. Eklund (Eds.), Handbook of sport psychology (3rd ed., pp. 184-202). Hoboken, NJ: Wiley.
    • (2007) Handbook of sport psychology , pp. 184-202
    • Côté, J.1    Baker, J.2    Abernethy, B.3
  • 24
    • 80051610948 scopus 로고    scopus 로고
    • Play, Practice, and athlete development
    • D. Farrow, J. Baker, & C. MacMahon (Eds.). London: Routledge
    • Côté, J., & Fraser-Thomas, J. (2008). Play, Practice, and athlete development. In D. Farrow, J. Baker, & C. MacMahon (Eds.), Developing sport expertise (pp. 17-25). London: Routledge.
    • (2008) Developing sport expertise , pp. 17-25
    • Côté, J.1    Fraser-Thomas, J.2
  • 26
    • 33750039659 scopus 로고    scopus 로고
    • When " where" is more important than " when" : Birthplace effects on the achievement of sporting expertise
    • Côté, J., MacDonald, D., Baker, J., & Abernethy, B. (2006). When " where" is more important than " when" : Birthplace effects on the achievement of sporting expertise. Journal of Sports Sciences, 24, 1065-73.
    • (2006) Journal of Sports Sciences , vol.24 , pp. 1065-1073
    • Côté, J.1    MacDonald, D.2    Baker, J.3    Abernethy, B.4
  • 27
    • 36048981374 scopus 로고    scopus 로고
    • Genes, environment and sport performance Why the nature-nurture dualism is no longer relevant
    • Davids, K., & Baker, J. (2007). Genes, environment and sport performance. Why the nature-nurture dualism is no longer relevant. Sports medicine, 37, 961-980.
    • (2007) Sports medicine , vol.37 , pp. 961-980
    • Davids, K.1    Baker, J.2
  • 30
    • 34147101534 scopus 로고    scopus 로고
    • Deliberate practice and the modifiability of body and mind: Toward a science of the structure and acquisition of expert and elite performance
    • Ericsson, K. A. (2007). Deliberate practice and the modifiability of body and mind: Toward a science of the structure and acquisition of expert and elite performance. International Journal of Sport Psychology, 38, 4-34.
    • (2007) International Journal of Sport Psychology , vol.38 , pp. 4-34
    • Ericsson, K.A.1
  • 31
    • 12044257789 scopus 로고
    • The role of deliberate practice in the acquisition of expert performance
    • Ericsson, K. A., Krampe, R. T., & Tesch-Römer, C. (1993). The role of deliberate practice in the acquisition of expert performance. Psychological Review, 100, 363-406.
    • (1993) Psychological Review , vol.100 , pp. 363-406
    • Ericsson, K.A.1    Krampe, R.T.2    Tesch-Römer, C.3
  • 33
    • 35348831371 scopus 로고    scopus 로고
    • Here, there and everywhere: Music education research in a globalised world
    • Folkestad, G. (2005). Here, there and everywhere: Music education research in a globalised world. Music Education Research, 7, 279-287.
    • (2005) Music Education Research , vol.7 , pp. 279-287
    • Folkestad, G.1
  • 34
    • 84864948433 scopus 로고    scopus 로고
    • Futsal, o berço do futebol brasileiro
    • [Futsal, the cradle of brazilian football: Theoretical principles for coaches]. São Paulo: Aleph
    • Fonseca, C. (2007). Futsal, o berço do futebol brasileiro. Princípios teóricos para treinadores [Futsal, the cradle of brazilian football: Theoretical principles for coaches]. São Paulo: Aleph.
    • (2007) Princípios teóricos para treinadores
    • Fonseca, C.1
  • 35
    • 84864948436 scopus 로고    scopus 로고
    • Futebol de rua, um beco com saída
    • [Football on the street, an alley with escape. Spontaneous game and deliberate practice]. Lisboa: Visão e Contextos
    • Fonseca, H., & Garganta, J. (2008). Futebol de rua, um beco com saída. Jogo espontâneo e prática deliberada [Football on the street, an alley with escape. Spontaneous game and deliberate practice]. Lisboa: Visão e Contextos.
    • (2008) Jogo espontâneo e prática deliberada
    • Fonseca, H.1    Garganta, J.2
  • 36
    • 56249105695 scopus 로고    scopus 로고
    • [Footbalĺs pedagogy]. Campinas: Autores Associados
    • Freire, J. B. (2006). Pedagogia do futebol [Footbalĺs pedagogy]. Campinas: Autores Associados.
    • (2006) Pedagogia do futebol
    • Freire, J.B.1
  • 37
    • 62749197623 scopus 로고    scopus 로고
    • Bronfenbrenneŕs bioecological theory of human development and the process of development of sports talent
    • Krebs, R. J. (2009). Bronfenbrenneŕs bioecological theory of human development and the process of development of sports talent. International Journal of Sport Psychology, 40, 108-135.
    • (2009) International Journal of Sport Psychology , vol.40 , pp. 108-135
    • Krebs, R.J.1
  • 38
    • 84864948435 scopus 로고    scopus 로고
    • Manual do Atleta Inteligente. [Learning with Pelé - Stories told by Pelé himself]. São Paulo: Projeto Campus Pelé
    • Manual do Atleta Inteligente. (2008). Aprendendo com o Pelé - Histórias contadas pelo próprio Pelé [Learning with Pelé - Stories told by Pelé himself]. São Paulo: Projeto Campus Pelé.
    • (2008) Aprendendo com o Pelé - Histórias contadas pelo próprio Pelé
  • 39
    • 84861952390 scopus 로고    scopus 로고
    • Análise da carreira esportiva de jovens atletas de futebol na transição da fase amadora para a fase profissional: Escolaridade, iniciação, contexto sócio-familiar e planejamento da carreira [Analyses of the sports career of youth football players in the transition between the amateur phase and the professional phases]
    • Marques, M. P., & Samulski, D. M. (2009) Análise da carreira esportiva de jovens atletas de futebol na transição da fase amadora para a fase profissional: Escolaridade, iniciação, contexto sócio-familiar e planejamento da carreira [Analyses of the sports career of youth football players in the transition between the amateur phase and the professional phases]. Revista Brasileira de Educação Física e Esporte, 23, 103-119.
    • (2009) Revista Brasileira de Educação Física e Esporte , vol.23 , pp. 103-119
    • Marques, M.P.1    Samulski, D.M.2
  • 41
    • 84859761207 scopus 로고    scopus 로고
    • Papel dos pais no desenvolvimento de jovens futebolistas [Parents role in the development of soccer players]
    • Moraes, L. C., Rabelo, A. S., & Salmela, J. H. (2004). Papel dos pais no desenvolvimento de jovens futebolistas [Parents role in the development of soccer players]. Revista Psicologia: Reflexão e Crítica, 17(2), 211-222.
    • (2004) Revista Psicologia: Reflexão e Crítica , vol.17 , Issue.2 , pp. 211-222
    • Moraes, L.C.1    Rabelo, A.S.2    Salmela, J.H.3
  • 42
    • 67649459182 scopus 로고    scopus 로고
    • Le role des parents dans le développement des jeunes joueurs de football et de tennis brésiliens [Parents role in the development of Brazilian young football and Brazilian young tennis players]
    • Moraes, L. C., Salmela, J. H., Rabelo, A., & Vianna, N. (2004). Le role des parents dans le développement des jeunes joueurs de football et de tennis brésiliens [Parents role in the development of Brazilian young football and Brazilian young tennis players]. Revue Staps, 64, 109-125.
    • (2004) Revue Staps , vol.64 , pp. 109-125
    • Moraes, L.C.1    Salmela, J.H.2    Rabelo, A.3    Vianna, N.4
  • 43
    • 0035632719 scopus 로고    scopus 로고
    • Unequal competition as an impediment to personal development: A review of the relative age effect in sport
    • Musch, J., & Grondin, S. (2001). Unequal competition as an impediment to personal development: A review of the relative age effect in sport. Developmental Review, 21, 147-167.
    • (2001) Developmental Review , vol.21 , pp. 147-167
    • Musch, J.1    Grondin, S.2
  • 44
    • 0002550143 scopus 로고
    • Mechanisms of skill acquisition and the law of practice
    • J. R. Anderson (Ed.), Hillsdale, NJ: Erlbaum
    • Newell, A., & Rosenbloom, P. S. (1981). Mechanisms of skill acquisition and the law of practice. In J. R. Anderson (Ed.), Cognitive skills and their acquisition (pp. 1-55). Hillsdale, NJ: Erlbaum.
    • (1981) Cognitive skills and their acquisition , pp. 1-55
    • Newell, A.1    Rosenbloom, P.S.2
  • 45
    • 0010815556 scopus 로고
    • Coaching children: Understanding the motivational process
    • Petlichkoff, L. M. (1993). Coaching children: Understanding the motivational process. Sport Science Review, 2, 49-61.
    • (1993) Sport Science Review , vol.2 , pp. 49-61
    • Petlichkoff, L.M.1
  • 47
    • 77950514031 scopus 로고    scopus 로고
    • Expert performance in sport and the dynamics of talent development
    • Phillips, E., Davids, K., Renshaw, I., & Portus, M. (2010). Expert performance in sport and the dynamics of talent development. Sports medicine, 40, 271-283.
    • (2010) Sports medicine , vol.40 , pp. 271-283
    • Phillips, E.1    Davids, K.2    Renshaw, I.3    Portus, M.4
  • 48
    • 84864945994 scopus 로고
    • I Principi della Preparazione a Lungo Termine [The principles of long-term preparation]
    • Platonov, V. (1994). I Principi della Preparazione a Lungo Termine [The principles of long-term preparation]. Rivista di Cultura Sportiva - Scuola dello Sport, 30, 2-10.
    • (1994) Rivista di Cultura Sportiva - Scuola dello Sport , vol.30 , pp. 2-10
    • Platonov, V.1
  • 49
    • 7444258872 scopus 로고    scopus 로고
    • [The negro in brazilian football](4th ed.) Rio de Janeiro: Mauad.
    • Rodrigues Filho, M. (2003) O negro no futebol brasileiro [The negro in brazilian football] (4th ed.). Rio de Janeiro: Mauad.
    • (2003) O negro no futebol brasileiro
    • Rodrigues Filho, M.1
  • 50
    • 84864941869 scopus 로고    scopus 로고
    • A prática do futsal feminino na formação das jogadoras brasileiras de futebol [Futsal contribution in the development of women Brazilian football players]
    • Rosa, C. F., Costa, N. G. R., & Navarro, A. C. (2009) A prática do futsal feminino na formação das jogadoras brasileiras de futebol [Futsal contribution in the development of women Brazilian football players]. Revista Brasileira de Futsal e Futebol, 1, 163-172.
    • (2009) Revista Brasileira de Futsal e Futebol , vol.1 , pp. 163-172
    • Rosa, C.F.1    Costa, N.G.R.2    Navarro, A.C.3
  • 51
    • 29144448413 scopus 로고    scopus 로고
    • Development of expertise: The role of coaching, families, and cultural context
    • J. L. Starkes & K. A. Ericsson (Eds.)Champaign, IL: Human Kinetics
    • Salmela, J. H., & Moraes, L. C. (2003). Development of expertise: The role of coaching, families, and cultural context. In J. L. Starkes & K. A. Ericsson (Eds.), Expert performance in sport: advances in research on sport expertise (pp. 275-294). Champaign, IL: Human Kinetics.
    • (2003) Expert performance in sport: advances in research on sport expertise , pp. 275-294
    • Salmela, J.H.1    Moraes, L.C.2
  • 54
    • 56249089221 scopus 로고    scopus 로고
    • [The football has been learned and the football has been taught]. (Unpublished master thesis). Estadual University of Campinas, Brazil
    • Scaglia, A. J. (1999). O futebol que se aprende e o futebol que se ensina [The football has been learned and the football has been taught]. (Unpublished master thesis). Estadual University of Campinas, Brazil.
    • (1999) O futebol que se aprende e o futebol que se ensina
    • Scaglia, A.J.1
  • 55
    • 84864921680 scopus 로고    scopus 로고
    • O futebol e os jogos/brincadeiras de bola com os pés: Todos semelhantes, todos diferentes [Football and the play/feet-ball games: All similar, all different]
    • J. B. Freire & S. Venancio (Eds.)Campinas, Autores Associados
    • Scaglia, A. J. (2005). O futebol e os jogos/brincadeiras de bola com os pés: Todos semelhantes, todos diferentes [Football and the play/feet-ball games: All similar, all different]. In J. B. Freire & S. Venancio (Eds.) O Jogo dentro e fora da escola. (pp. 115-138). Campinas, Autores Associados.
    • (2005) O Jogo dentro e fora da escola , pp. 115-138
    • Scaglia, A.J.1
  • 56
    • 84864939918 scopus 로고    scopus 로고
    • O jogo de bola: Uma análise sócio espacial dos territórios dos peladeiros [The game ball: An analysis of socio spatial territories of peladeiros]
    • Silva, A. B., & Chaveiro, E. F. (2007). O jogo de bola: Uma análise sócio espacial dos territórios dos peladeiros [The game ball: An analysis of socio spatial territories of peladeiros]. Revista Pensar a Prática, 10, 1-14.
    • (2007) Revista Pensar a Prática , vol.10 , pp. 1-14
    • Silva, A.B.1    Chaveiro, E.F.2
  • 57
    • 0003138237 scopus 로고    scopus 로고
    • Expert performance in sport and dance
    • R. Singer, H. Hausenblas, & C. Janelle (Eds) Chichester: John Wiley. (2nd ed.
    • Starkes, J., Helsen, W., & Jack, R. (2001). Expert performance in sport and dance. In R. Singer, H. Hausenblas, & C. Janelle (Eds). Handbook of Sport Psychology (2nd ed., pp 174-201). Chichester: John Wiley.
    • (2001) Handbook of Sport Psychology , pp. 174-201
    • Starkes, J.1    Helsen, W.2    Jack, R.3
  • 58
    • 84864957769 scopus 로고    scopus 로고
    • (s/d). Retrieved from
    • Sócrates, S. (s/d). Retrieved from www.skulapius. com.br/esportes/ed26/ed26.php.
    • Sócrates, S.1
  • 59
    • 84864918051 scopus 로고
    • história [Futsal: Tactics, rules, history2nd ed. ]. São Paulo: Brasipal.
    • Tolussi, F. C. (1982). Futebol de salão: Tática, regra, história [Futsal: Tactics, rules, history, 2nd ed.]. São Paulo: Brasipal.
    • (1982) Futebol de salão: Tática, regra
    • Tolussi, F.C.1
  • 60
    • 84864921758 scopus 로고    scopus 로고
    • Role of parental support in sports success of talented young dutch athletes., Youth Sports
    • M. J. C. Silva A. J. Figueiredo, M. T. Elferink-Gemser, & R. M. Malina (Eds. )Coimbra: Coimbra University Press
    • Visscher, C., Elferink-Gemser, M. T., & Lemmink, K. (2009). Role of parental support in sports success of talented young dutch athletes. In M. J. C. Silva, A. J. Figueiredo, M. T. Elferink-Gemser, & R. M. Malina (Eds.), Youth Sports: Participation,Trainability and Readiness (pp. 103-116). Coimbra: Coimbra University Press.
    • (2009) Participation,Trainability and Readiness , pp. 103-116
    • Visscher, C.1    Elferink-Gemser, M.T.2    Lemmink, K.3
  • 61
    • 77951663688 scopus 로고    scopus 로고
    • Towards the development of a conceptual model of batting expertise in cricket: A grounded theory approach
    • Weissensteiner, J., Abernethy, B., Farrow, D. (2009). Towards the development of a conceptual model of batting expertise in cricket: A grounded theory approach. Journal of Applied Sport Psychology, 21(3), 276-292.
    • (2009) Journal of Applied Sport Psychology , vol.21 , Issue.3 , pp. 276-292
    • Weissensteiner, J.1    Abernethy, B.2    Farrow, D.3
  • 62
    • 57349098226 scopus 로고    scopus 로고
    • The development of anticipation: A cross-sectional examination of the practice experiences contributing to expertise in cricket batting
    • Weissensteiner, J., Abernethy, B., Farrow, D., & Müller, S. (2008). The development of anticipation: A cross-sectional examination of the practice experiences contributing to expertise in cricket batting. Journal of Sport Exercise Psychology, 30, 663-684.
    • (2008) Journal of Sport Exercise Psychology , vol.30 , pp. 663-684
    • Weissensteiner, J.1    Abernethy, B.2    Farrow, D.3    Müller, S.4
  • 63
    • 0033834389 scopus 로고    scopus 로고
    • Talent identification and development in soccer
    • Williams, M. A., & Reilly, T. (2000). Talent identification and development in soccer. Journal of Sports Sciences, 18, 657-667.
    • (2000) Journal of Sports Sciences , vol.18 , pp. 657-667
    • Williams, M.A.1    Reilly, T.2
  • 64
    • 79956095029 scopus 로고    scopus 로고
    • Informal music learning, improvisation and teacher education
    • Wright, R., & Kanellopoulos, P. (2010). Informal music learning, improvisation and teacher education. British Journal of Music Education, 27, 71-87.
    • (2010) British Journal of Music Education , vol.27 , pp. 71-87
    • Wright, R.1    Kanellopoulos, P.2


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