Willis Franklin Overton, Jr. is an American psychologist whose research is in the fields of clinical and developmental psychology. He is the Thaddeus L. Bolton Professor of Psychology Emeritus at Temple University, where he was the chair of the psychology department from 2000 to 2006.

• Abstract. I. Introduction.II. Method and data analysis.III. Person-Centered Trajectories of Physical Aggression.IV. Predictors of Aggression Trajectories.V. Person-Centered Aggression Trajectories and Third Grade Outcomes.VI. Variable – and Person-Centered Analyses of Physical Aggression Compared.VII. Discussion.References.Acknowledgment.Commentary.The Stability of Young Children's Physical Aggression: Relations With Child Care, Gender, and Aggression Subtypes.Contributors.Statement of Editorial Policy.

Willis Franklin Overton, Jr. is an American psychologist whose research is in the fields of clinical and developmental psychology. He is the Thaddeus L. Bolton Professor of Psychology Emeritus at Temple University, where he was the chair of the psychology department from 2000 to 2006.

• Abstract. I. Introduction.II. Method and data analysis.III. Person-Centered Trajectories of Physical Aggression.IV. Predictors of Aggression Trajectories.V. Person-Centered Aggression Trajectories and Third Grade Outcomes.VI. Variable – and Person-Centered Analyses of Physical Aggression Compared.VII. Discussion.References.Acknowledgment.Commentary.The Stability of Young Children's Physical Aggression: Relations With Child Care, Gender, and Aggression Subtypes.Contributors.Statement of Editorial Policy.

Willis Franklin Overton, Jr. is an American psychologist whose research is in the fields of clinical and developmental psychology. He is the Thaddeus L. Bolton Professor of Psychology Emeritus at Temple University, where he was the chair of the psychology department from 2000 to 2006.

• Abstract. I. Introduction.II. Method and data analysis.III. Person-Centered Trajectories of Physical Aggression.IV. Predictors of Aggression Trajectories.V. Person-Centered Aggression Trajectories and Third Grade Outcomes.VI. Variable – and Person-Centered Analyses of Physical Aggression Compared.VII. Discussion.References.Acknowledgment.Commentary.The Stability of Young Children's Physical Aggression: Relations With Child Care, Gender, and Aggression Subtypes.Contributors.Statement of Editorial Policy.