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Developmental foundations of externalizing problems in young children: The role of effortful control

Published online by Cambridge University Press:  07 April 2005

SHERYL L. OLSON
Affiliation:
University of Michigan
ARNOLD J. SAMEROFF
Affiliation:
University of Michigan
DAVID C. R. KERR
Affiliation:
University of Michigan
NESTOR L. LOPEZ
Affiliation:
University of Michigan
HENRY M. WELLMAN
Affiliation:
University of Michigan

Abstract

Examined associations between effortful control temperament and externalizing problems in 220 3-year-old boys and girls, controlling for co-occurring cognitive and social risk factors. We also considered possible additive and/or interactive contributions of child dispositional anger and psychosocial adversity, and whether relations between effortful control and early externalizing problems were moderated by child gender. Individual differences in children's effortful control abilities, assessed using behavioral and parent rating measures, were negatively associated with child externalizing problems reported by mothers, fathers, and preschool teachers. These associations were not overshadowed by other cognitive or social risk factors, or by other relevant child temperament traits such as proneness to irritability. Further analyses revealed that associations between externalizing problem behavior and effortful control were specific to components of child problem behavior indexing impulsive-inattentive symptoms. Thus, children's effortful control skills were important correlates of children's early disruptive behavior, a finding that may provide insight into the developmental origins of chronic behavioral maladjustment.This research was supported by a grant from the National Institute of Mental Health (RO1MH57489) to Sheryl Olson and Arnold Sameroff. We are very grateful to the children, parents, teachers, and preschool administrators who participated, and to the many individuals who gave us invaluable help with data collection and coding, especially Gail Benninghoff, Meribeth Gandy Pezda, Lisa Alvarez, Sara Miceli, and Felicia Kleinberg. We also thank the administrators of the University of Michigan Children's Center for their generous assistance, Grazyna Kochanska for allowing us to use her behavioral battery of effortful control tasks, Kathy Murray for helping us with numerous details concerning the behavioral battery, and Mary Rothbart, Jack Bates, Patricia Kerig, and Thomas Power for allowing us to use their parent self-report measures.

Type
Research Article
Copyright
© 2005 Cambridge University Press

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References

REFERENCES

Achenbach, T. M. (1992). Manual for the Child Behavior Checklist/2–3 and 1992 profile. Burlington, VT: University of Vermont, Department of Psychiatry.
Achenbach, T. M. (1997). Teacher/Caregiver Report Form for Ages 2–5. Burlington, VT: University of Vermont, Department of Psychiatry.
Achenbach, T. M., Edelbrock, C., & Howell, C. (1987). Empirically based assessment of the behavioral/emotional problems of 2- and 3-year-old children. Journal of Abnormal Child Psychology 15, 629650.CrossRefGoogle Scholar
Ahadi, S. A., Rothbart, M. K., & Ye, R. M. (1993). Child temperament in the U.S. and China: Similarities and differences. European Journal of Personality 7, 359378.Google Scholar
Aiken, L. S., & West, S. G. (1991). Multiple regression: Testing and interpreting interactions. Newbury Park, CA: Sage.
American Psychiatric Association. (2000). Diagnostic and Statistical Manual of Mental Disorders (4th ed., text revision). Washington, DC: Author.
Barkley, R. A. (1997). Behavioral inhibition, sustained attention, and executive functions: Constructing a unifying theory of ADHD. Psychological Bulletin 121, 6594.CrossRefGoogle Scholar
Bates, J. E. (2000). Temperament as an emotion construct: Theoretical and practical issues. In M. Lewis & J. M. Haviland–Jones (Eds.), Handbook of emotions (2nd ed., pp. 382396). New York: Guilford Press.
Bates, J. E., Dodge, K. A., Pettit, G. S., & Ridge, B. (1998). Interaction of temperamental resistance to control and restrictive parenting in the development of externalizing behavior. Developmental Psychology 34, 982995.CrossRefGoogle Scholar
Baumrind, D., Larzelere, R. E., & Cowan, P. A. (2002). Ordinary physical punishment: Is it harmful? Comment on Gershoff. Psychological Bulletin 128, 580598.CrossRefGoogle Scholar
Calkins, S. D., & Dedmon, S. E. (2000). Physiological and behavioral regulation in two-year-old children with aggressive/destructive behavior problems. Journal of Abnormal Child Psychology 28, 103118.CrossRefGoogle Scholar
Campbell, S. B., Pierce, E. M., Moore, G., Marakovitz, S., & Newby, K. (1996). Boys' externalizing problems at elementary school: Pathways from early behavior problems, maternal control, and family stress. Development and Psychopathology 8, 701720.CrossRefGoogle Scholar
Campbell, S. B., Shaw, D. S., & Gilliom, M. (2000). Early externalizing behavior problems: Toddlers and preschoolers at risk for later maladjustment. Development and Psychopathology 12, 467488.CrossRefGoogle Scholar
Caspi, A., & Moffitt, T. E. (1995). The continuity of maladaptive behavior: From description to explanation in the study of antisocial behavior. In D. Cicchetti & D. Cohen (Eds.), Developmental psychopathology (Vol. 2, pp. 472511). New York: Wiley.
Coie, J. D., & Dodge, K. A. (1998). Aggression and antisocial behavior. In W. Damon & N. Eisenberg (Eds.), Handbook of child psychology: Vol. 3. Social, emotional, and personality development (pp. 779862). New York: Wiley.
Cole, P. M., Zahn–Waxler, C., Fox, N. A., Usher, B. A., & Welsh, J. D. (1996). Individual differences in emotion regulation and behavioral problems in preschool children. Journal of Abnormal Psychology 105, 518529.CrossRefGoogle Scholar
Cummings, E. M., Davies, P. T., & Campbell, S. B. (2001). Developmental psychopathology and family process: Theory, research, and clinical implications. New York: Guilford Press.
Cutting, A. L., & Dunn, J. (1999). Theory of mind, emotion understanding, language, and family background: Individual differences and interrelations. Child Development 70, 853865.CrossRefGoogle Scholar
Davies, P. T., Myers, R. L., Cummings, E. M., & Heindel, S. (1999). Adult conflict history and children's subsequent responses to conflict. Journal of Family Psychology 13, 610628.CrossRefGoogle Scholar
Deater–Deckard, K., Dodge, K. A., Bates, J. E., & Pettit, G. S. (1998). Multiple risk factors in the development of externalizing behavior problems. Development and Psychopathology 10, 469493.CrossRefGoogle Scholar
Derryberry, D., & Rothbart, M. K. (1997). Reactive and effortful processes in the organization of temperament. Development and Psychopathology 9, 631650.Google Scholar
Diamond, A., & Taylor, C. (1996). Development of an aspect of executive control: Development of the abilities to remember what I said and to do as I say, not as I do. Developmental Psychobiology 29, 315334.3.0.CO;2-T>CrossRefGoogle Scholar
Dodge, K. A., Pettit, G. S., & Bates, J. E. (1994). Socialization mediators of the relation between socioeconomic status and child conduct problems. Child Development 65, 649665.CrossRefGoogle Scholar
Eisenberg, N., Cumberland, A., Spinrad, T. L., Fabes, R., Shepard, S., Reiser, M., Murphy, B., Losoya, S., & Guthrie, I. K. (2001). The relations of regulation and emotionality to children's externalizing and internalizing problem behavior. Child Development 72, 11121134.CrossRefGoogle Scholar
Eisenberg, N., Fabes, R., Guthrie, I. K., Murphy, B., Maszk, P., Holmgren, R., & Suh, K. (1996). The relations of regulation and emotionality to problem behavior in elementary school children. Development and Psychopathology 8, 141162.CrossRefGoogle Scholar
Eisenberg, N., Guthrie, I. K., Fabes, R. A., Shepard, S., Losoya, S., Murphy, B., Jones, S., Poulin, R., & Reiser, M. (2000). Prediction of elementary school children's externalizing problem behaviors from attentional and behavioral regulation and negative emotionality. Child Development 71, 13671382.CrossRefGoogle Scholar
El-Sheikh, M., Cummings, E. M., & Reiter, S. (1996). Preschoolers' responses to inter-adult conflict: The role of experimentally manipulated exposure to resolved and unresolved arguments. Journal of Abnormal Child Psychology 24, 655679.Google Scholar
Erel, O., & Burman, B. (1995). Interrelatedness of marital relations and parent–child relations: A meta-analytic review. Psychological Bulletin 118, 108132.CrossRefGoogle Scholar
Gardner, F. (1994). The quality of joint activity between mothers and their children with behavior problems. Journal of Child Psychology and Psychiatry 35, 935948.CrossRefGoogle Scholar
Gerardi–Caulton, G. (2000). Sensitivity to spatial conflict and the development of self-regulation in children 24–36 months of age. Developmental Science 3, 397404.CrossRefGoogle Scholar
Gershoff, E. T. (2002). Corporal punishment by parents and associated child behaviors and experiences: A meta-analytic and theoretical review. Psychological Bulletin 128, 539579.CrossRefGoogle Scholar
Giancola, P., Mezzich, A., & Tarter, R. (1998). Executive cognitive functioning, temperament, and antisocial behavior in conduct-disordered adolescent females. Journal of Abnormal Psychology 107, 629641.CrossRefGoogle Scholar
Greenberg, M. T., Speltz, M. L., DeKlyen, M., & Jones, K. (2001). Correlates of clinic referral for early conduct problems: Variable and person-oriented approaches. Development and Psychopathology 13, 255276.CrossRefGoogle Scholar
Grych, J. H., & Fincham, F. D. (1993). Children's appraisals of martial conflict: Initial investigations of the cognitive-contextual framework. Child Development 64, 215230.CrossRefGoogle Scholar
Grych, J. H., & Fincham, F. D. (2001). Interparental conflict and child adjustment: An overview. In J. H. Grych & F. Fincham (Eds.), Child development and interparental conflict. New York: Cambridge University Press.CrossRef
Hay, D., Castle, J., & Davies, L. (2000). Toddlers' use of force against familiar peers: A precursor of serious aggression? Child Development 71, 457467.Google Scholar
Henry, B., Caspi, A., Moffitt, T. E., & Silva, P. (1996). Temperamental and familial predictors of violent and non-violent criminal convictions: From age 3 to age 18. Developmental Psychology 32, 614623.CrossRefGoogle Scholar
Hinshaw, S. P. (1987). On the distinction between attentional deficit/hyperactivity and conduct problem/aggression in child psychopathology. Psychological Bulletin 101, 443463.CrossRefGoogle Scholar
Hinshaw, S. P. (2002). Process, mechanism, and explanation related to externalizing behavior in developmental psychopathology. Journal of Abnormal Child Psychology 30, 431446.Google Scholar
Hinshaw, S. P., Lahey, B. B., & Hart, E. L. (1993). Issues in the taxonomy and co-morbidity in the development of conduct disorder. Development and Psychopathology 5, 3150.Google Scholar
Hughes, C., Cutting, A. L., & Dunn, J. (2001). Acting nasty in the face of failure?: Longitudinal observations of “hard-to-manage” children playing a rigged competitive game with a friend. Journal of Abnormal Child Psychology 29, 403416.Google Scholar
Hughes, C., White, A., Sharpen, J., & Dunn, J. (2000). Antisocial, angry, and unsympathetic: “Hard to manage” preschoolers' peer problems and possible cognitive influences. Journal of Child Psychology and Psychiatry 41, 169179.Google Scholar
Hughes, C., Dunn, J., & White, A. (1998). Trick or treat? Uneven understanding of mind and emotion and executive dysfunction in “hard to manage” preschoolers. Journal of Child Psychology and Psychiatry 39, 981994.Google Scholar
Kazdin, A. E. (1995). Conduct disorders in childhood and adolescence (2nd ed.). Thousand Oaks, CA: Sage.
Keenan, K., & Shaw, D. (1997). Developmental and social influences on young girls' early problem behavior. Psychological Bulletin 121, 95113.Google Scholar
Keenan, K., & Wakschlag, L. (2000). More than the terrible twos: The nature and severity of behavior problems in clinic-referred preschool children. Journal of Abnormal Child Psychology 28, 3346.Google Scholar
Kerig, P. K. (1996). Assessing the links between interparental conflict and child adjustment: The Conflicts and Problem-solving Scales. Journal of Family Psychology 19, 454473.Google Scholar
Kerr, D. C. R., Lopez, N., Olson, S. L., & Sameroff, A. J. (2004). Parental discipline and externalizing behavior problems in early childhood: The roles of moral regulation and child gender. Journal of Abnormal Child Psychology 32, 369383.Google Scholar
Kochanska, G., Murray, K., & Coy, K. C. (1997). Inhibitory control as a contributor to conscience in childhood: From toddler to early school age. Child Development 68, 263277.Google Scholar
Kochanska, G., Murray, K. T., & Harlan, E. T. (2000). Effortful control in early childhood: Continuity and change, antecedents, and implications for social development. Developmental Psychology 36, 220232.Google Scholar
Kochanska, G., Murray, K., Jacques, T. Y., Koenig, A. L., & Vandegeest, K. (1996). Inhibitory control in young children and its role in emerging internalization. Child Development 67, 490507.Google Scholar
Kochanska, G., Tjebkes, T. L., & Forman, D. R. (1998). Children's emerging regulation of conduct: Restraint, compliance, and internalization from infancy to the second year. Child Development 69, 13781389.Google Scholar
Koot, H. M., Van Den Oord, E. J., Verhulst, F. C., & Boomsma, D. (1997). Behavioral and emotional problems in young preschoolers: Cross-cultural testing of the validity of the Child Behavior Checklist 2–3. Journal of Abnormal Child Psychology 25, 183196.Google Scholar
Kopp, C. B. (1989). Regulation of distress and negative emotion: A developmental view. Developmental Psychology 25, 343354.Google Scholar
Lahey, B. B., Loeber, R., Quay, H. C., Frick, P. J., & Grimm, P. (1992). Oppositional defiant and conduct disorders: Issues to be resolved for DSM-IV. Journal of the American Academy of Child and Adolescent Psychiatry 31, 539546.Google Scholar
Lahey, B. B., Schwab–Stone, M., Goodman, S. H., Waldman, I. D., Canino, G., Rathouz, P. J., Miller, T. L., Dennis, K. D., Bird, H., & Jensen, P. S. (2000). Age and gender differences in oppositional behavior and conduct problems: A cross-sectional household study of middle childhood and adolescence. Journal of Abnormal Psychology 109, 488503.Google Scholar
Lahey, B. B., Waldman, I. D., & McBurnett, K. (1999). The development of antisocial behavior: An integrative causal model. Journal of Child Psychology and Psychiatry 40, 669682.Google Scholar
Lemery, K. S., Essex, M. J., & Smider, N. A. (2002). Revealing the relation between temperament and behavior problem symptoms by eliminating measurement confounding: Expert ratings and factor analyses. Child Development 73, 867882.Google Scholar
Lengua, L. J., West, S. G., & Sandler, I. N. (1998). Temperament as a predictor of symptomatology in children: Addressing contamination of measures. Child Development 69, 164181.Google Scholar
Loeber, R., Wung, P., Keenan, K., Giroux, B., Stouthamer–Loeber, M., VanKammen, W. B., & Maughan, B. (1993). Developmental pathways in disruptive child behavior. Development and Psychopathology 5, 103133.Google Scholar
McFayden–Ketchum, S. A., Bates, J. E., Dodge, K. A., & Pettit, G. S. (1996). Patterns of change in early childhood aggressive–disruptive behavior: Gender differences in predictions from early coercive and affectionate mother–child interactions. Child Development 67, 24172433.Google Scholar
Miller, N. B., Cowan, P. A., Cowan, C. P., Hetherington, E. M., & Clingempeel, W. G. (1993). Externalizing behavior in preschoolers and early adolescents: A cross-study replication of a family model. Developmental Psychology 29, 318.Google Scholar
Moffitt, T. (1990). Juvenile delinquency and attention deficit disorder: Boys' developmental trajectories from age 3 to age 15. Child Development 61, 893910.Google Scholar
Moffitt, T. E. (1993). The neuropsychology of conduct disorder. Development and Psychopathology 5, 135151.Google Scholar
Moffitt, T. E. (2003). Life-course persistent and adolescence-limited antisocial behavior: A 10-year research review and a research agenda. In B. B. Lahey, T. E. Moffitt, & A. Caspi (Eds.), Causes of conduct disorder and juvenile delinquency (pp. 4975). New York: Guilford Press.
Moffitt, T. E., & Caspi, A. (2001). Childhood predictors differentiate life-course persistent and adolescence-limited antisocial pathways among males and females. Development and Psychopathology 13, 355375.Google Scholar
Moffitt, T. E., Caspi, A., Dickson, N., Silva, P., & Stanton, W. (1996). Childhood-onset versus adolescent-onset antisocial conduct problems in males: Natural history from ages 3 to 18 years. Development and Psychopathology 8, 399424.Google Scholar
Moffitt, T. E., Caspi, A., Rutter, M., & Silva, P. (2001). Sex differences in antisocial behavior. Cambridge: Cambridge University Press.
Morgan, A. B., & Lilienfeld, S. O. (2000). A meta-analytic review of the relation between antisocial behavior and neuropsychological measures of executive functions. Clinical Psychology Review 20, 113136.Google Scholar
Murray, K. T., & Kochanska, G. (2002). Effortful control: Factor structure and relation to externalizing and internalizing behaviors. Journal of Abnormal Child Psychology 30, 503514.Google Scholar
Newman, J. P., & Wallace, J. F. (1993). Diverse pathways to deficient self-regulation: Implications for disinhibitory psychopathology in children. Clinical Psychology Review 13, 699720.Google Scholar
Nigg, J. T. (2000). On inhibition/disinhibition in developmental psychopathology: View from cognitive and personality psychology and a working inhibition taxonomy. Psychological Bulletin 126, 220246.Google Scholar
Nigg, J. T. (2003). An early-onset model of the role of executive functions and intelligence in conduct disorder/delinquency. In B. B. Lahey, T. E. Moffitt, & A. Caspi (Eds.), Causes of conduct disorder and juvenile delinquency (pp. 227253). New York: Guilford Press.
Olson, S. L., Bates, J. E., Sandy, J. M., & Lanthier, R. (2000). Early developmental precursors of externalizing behavior in middle childhood and adolescence. Journal of Abnormal Child Psychology 28, 119133.Google Scholar
Olson, S. L., Bates, J. E., Sandy, J. M., & Schilling, E. M. (2002). Early developmental precursors of impulsive and inattentive behavior: From infancy to middle childhood. Journal of Child Psychology and Psychiatry 43, 435447.Google Scholar
Olson, S. L., & Hoza, B. (1993). Preschool developmental correlates of conduct problems in children beginning school. Journal of Clinical Child Psychology 22, 6067.Google Scholar
Olson, S. L., & Sameroff, A. J. (1997). Social risk and self-regulation problems in early childhood. Bethesda, MD: National Institute of Mental Health.
Olson, S. L., Schilling, E. M., & Bates, J. E. (1999). Measurement of impulsivity: Construct coherence, longitudinal stability, and relationships with externalizing problems in middle childhood and adolescence. Journal of Abnormal Child Psychology 27, 151165.Google Scholar
Oosterlaan, J., Logan, G. D., & Sergeant, J. A. (1998). Response inhibition in AD/HD, CD, comorbid AD/HD+CD, anxious, and control children: A metaanalysis of studies with the Stop task. Journal of Child Psychology and Psychiatry 39, 411425.Google Scholar
Patterson, G. R., Reid, J., & Dishion, T. J. (1992). Antisocial boys. Eugene, OR: Castalia.
Pettit, G. S., Bates, J. E., & Dodge, K. A. (1997). Supportive parenting, ecological context, and children's adjustment: A seven-year longitudinal study. Child Development 68, 908212.Google Scholar
Posner, M. I., & Rothbart, M. K. (2000). Developing mechanisms of self-regulation. Development and Psychopathology 12, 427441.Google Scholar
Power, T. G., Kobayashi–Winata, H., & Kelly, M. L. (1988). Childrearing in Japan and the United States: Cluster analytic study. International Journal of Behavioral Development 15, 185205.Google Scholar
Raine, A., Yaralian, P. S., Reynolds, C., Venables, P. H., & Mednick, S. A. (2002). Spatial but not verbal cognitive deficits at age 3 years in persistently antisocial individuals. Development and Psychopathology 14, 2544.Google Scholar
Reed, M. A., Pien, D. L., & Rothbart, M. K. (1984). Inhibitory self-control in children. Merrill–Palmer Quarterly 30, 131147.Google Scholar
Richman, M., Stevenson, J., & Graham, P. J. (1982). Preschool to school: A behavioral study. London: Academic Press.
Rothbart, M. K. (1989). Temperament and development. In G. A. Kohnstamm, J. E. Bates, & M. K. Rothbart (Eds.), Temperament in childhood (pp. 187247). New York: Wiley.
Rothbart, M. K., Ahadi, S., & Hershey, K. L. (1994). Temperament and social behavior in childhood. Merrill–Palmer Quarterly 40, 2139.Google Scholar
Rothbart, M. K., & Bates, J. E. (1998). Temperament. In W. Damon & N. Eisenberg (Eds.), Handbook of child psychology: Vol. 3. Social, emotional, and personality development (5th ed., pp. 105176). New York: Wiley.
Rothbart, M. K., Derryberry, D., & Posner, M. I. (1994). A psychobiological approach to the development of temperament. In J. E. Bates & T. D. Wachs (Eds.), Temperament: Individual differences at the interface of biology and behavior (pp. 83116). Washington, DC: American Psychological Association.
Rothbart, M. K., Posner, M. I., & Hershey, K. L. (1995). Temperament, attention, and developmental psychopathology. In D. Cicchetti & D. J. Cohen (Eds.), Developmental psychopathology: Vol. 1. Theory and methods (pp. 315340). New York: Wiley.
Rothbaum, F., & Weisz, J. R. (1994). Parental caregiving and child externalizing behavior in nonclinical samples: A meta-analysis. Psychological Bulletin 116, 5574.Google Scholar
Rutter, M. (2003). Crucial paths from risk indicator to causal mechanism. In B. B Lahey, T. E. Moffitt, & A. Caspi (Eds.), Causes of conduct disorder and juvenile delinquency (pp. 324). New York: Guilford Press.
Rutter, M., Giller, H., & Hagell, A. (1998). Antisocial behavior by young people. New York: Cambridge University Press.
Sameroff, A. J. (1995). General systems theories and developmental psychopathology. In D. Cicchetti & D. J. Cohen (Eds.), Handbook of development and psychopathology. New York: Wiley.
Sameroff, A. J. (2000). Dialectical processes in developmental psychopathology. In A. J. Sameroff, M. Lewis, & S. M. Miller (Eds.), Handbook of developmental psychopathology (pp. 2440). New York: Kluwer Academic/Plenum Press.
Sameroff, A. J., & Mackenzie, M. J. (2003). Research strategies for capturing transactional models of development: The limits of the possible. Development and Psychopathology 15, 613640.Google Scholar
Seguin, J. R., Boulerice, B., Harden, P. W., Tremblay, R. E., & Phil, R. O. (1999). Executive functions and physical aggression after controlling for attention deficit hyperactivity disorder, general memory, and I.Q. Journal of Child Psychology and Psychiatry 40, 11971208.Google Scholar
Shaw, D. S., Gilliom, M., & Giovanelli, J. (2000). Aggressive behavior disorders. In C. H. Zeanah (Ed.), Handbook of infant mental health (2nd ed., pp. 397411). New York: Guilford Press.
Shaw, D. S., Winslow, E. B., Owens, E. B., Vondra, J. I., Cohn, J. F., & Bell, R. Q. (1998). The development of early externalizing problems among children from low-income families: A transformational perspective. Journal of Abnormal Child Psychology 26, 95107.Google Scholar
Speltz, M., DeKlyen, M., Calderone, M., Greenberg, M. T., & Fisher, P. A. (1999). Neuropsychological characteristics and test behaviors of boys with early onset conduct problems. Journal of Abnormal Psychology 108, 315325.Google Scholar
Speltz, M., DeKlyen, M., & Greenberg, M. Y. (1999). Attachment in boys with early onset conduct problems. Development and Psychopathology 11, 269286.Google Scholar
Teichner, G., & Golden, C. (2000). The relationship of neuropsychological impairment to conduct disorder in adolescence. Aggression and Violent Behavior 5, 509528.Google Scholar
Tremblay, R. E. (2000). The development of aggressive behavior during childhood: What have we learned in the past century? International Journal of Behavioral Development 24, 129141.Google Scholar
Tremblay, R. E., Boulerice, B., Harden, P. W., McDuff, P., Perusse, D., Pihl, R. O., & Zoccolillo, M. (1996). Do children in Canada become more aggressive as they approach adolescence? In M. Cappe & I. Fellegi (Eds.), Growing up in Canada. Ottawa, Canada: Statistics Canada.
Tremblay, R. E., Pihl, R. O., Vitaro, F., & Dobkin, P. L. (1994). Predicting early onset of male antisocial behavior from preschool behavior. Archives of General Psychiatry 51, 732739.Google Scholar
Wechsler, D. (1989). Preschool and Primary Scale of Intelligence—Revised. San Antonio, TX: Psychological Corporation.
Wellman, H. M., Harris, P. L., Banerjee, M., & Sinclair, A. (1995). Early understanding of emotion: Evidence from natural language. Cognition and Emotion 9, 117149.Google Scholar