American Statistical Association
New York City
Metropolitan Area Chapter

New York State Psychiatric Institute at
Columbia University Medical Center
Division of Biostatistics Seminar



Patricia Cohen, Ph.D.
NYSPI and Department of Epidemiology
Columbia University


What data analytic techniques will allow us to identify "turning points" in complex datasets with multiple time points? Our collection of month-level narrative data on role assumption and related variables over the transition from adolescence to adulthood was motivated, in part, by an interest in identifying individuals who had experienced a turning point in their lives. This interest was focused on a segment of my longitudinal cohort studied from average age 5 and with repeated full psychiatric assessments beginning at mean age 13.5 and currently at mean age 38. In this presentation I will cover 1) the cumulative evidence about methods improving narrative veracity that led to strong evidence of reliability in the data, 2) Sir Michael Rutter’s conceptual discussion of turning points in the lives of individuals, 3) Our initial efforts at identifying individuals with turning points in their lives, and 4) the methods covered in my forthcoming book, Applied Data Analytic Techniques for Turning Point Research.

Biographical Note

Dr. Patricia Cohen is a Principal Research Scientist at NYSPI, Professor of Public Health (Epidemiology) in Psychiatry, Columbia University and co-director of the Psychiatric Epidemiology Training Program. She is co-author of the popular text Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences and author of over 250 scientific papers. Her Children in the Community longitudinal research with an upstate NY community sample first studied in 1975 includes over 800 participants, their mothers, siblings and offspring. Uniquely, personality disorders were assessed in childhood or early adolescence along with Axis I disorders.

Date: Tuesday, September 11, 2007
Time: 3:30 - 4:30 P.M.
Location: New York State Psychiatric Institute
1051 Riverside Drive
6th Floor Multi-Purpose Room (6602)
New York, New York


Refreshments will be served from 3:00 to 3:30 P.M.,
and a post-seminar reception will be held from 4:30 to 5:00 P.M.

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