Cohort Variations

Publications from my collaboration with Professor Robert O’Brien, listed below, began to appear almost two decades ago. We are continuing this work, examining the extent to which our earlier findings regarding lethal violence have persisted with more recent cohorts as well as cohort variations in other aspects of health and well-being.

“Race Differences in Cohort Effects on Nonmarital Fertility  in the United States: Reply to Martin,” Jean Stockard, Jo Anna Gray, Robert M. O’Brien, and Joe Stone, Social Forces, 87 (March, 2009): 1489-1497.  Read It

“Race Differences in Cohort Effects on Nonmarital Fertility  in the United States,” Jean Stockard, Jo Anna Gray, Robert M. O’Brien, and Joe Stone, Social Forces, 87 (March, 2009): 1449-1479.  Read It

“Can Cohort Replacement Explain Changes in the Relationship between Age and Homicide Offending?” Robert M. O’Brien and Jean Stockard, Journal of Quantitative Criminology, 25 (2009): 79-101.  Read It

“A Mixed Model Estimation of Age, Period, and Cohort Effects”  Robert M. O’Brien, Kenneth Hudson, and Jean Stockard, Sociological Methods and Research 36 (2008): 402-428.  Read It

 A Common Explanation for the Changing Age Distributions of Suicide and Homicide in the United States: 1930-2000,” Robert M. O’Brien and Jean Stockard, Social Forces 84 (March, 2006): 1539-1557.  Read It

“Cohort Variations in Suicide Rates Among Families of Nations:  An Analysis of Cohorts Born from 1875 through 1985,” Jean Stockard and Robert M. O’Brien International Journal of Comparative Sociology 47 (February, 2006): 5-33.  Read It

The Cohort-Size, Sample-Size Conundrum: An Empirical Analysis and Assessment Using Homicide Arrest Data from 1960 to 1999,” Robert M. O’Brien and Jean Stockard, Journal of Quantitative Criminology, 19 (March, 2003): 1-32.  Read It

“Cohort Effects on Suicide Rates: International Variations.” Jean Stockard and Robert M. O’Brien. American Sociological Review, 67 (December, 2002): 854-872.  Read It

“Cohort Variations and Changes in Age-Specific Suicide Rates Over-Time: Explaining Variations in Youth Suicide.” Jean Stockard and Robert M. O’Brien, Social Forces, 81 (2002): 605-642.  Read It

 “Variations in Age-Specific Homicide Death Rates: A Cohort Explanation for Changes in the Age Distribution of Homicide Deaths.” Robert M. O’Brien and Jean Stockard, Social Science Research.  31(2002): 124-150.  Read It

The Enduring Effects of Cohort Size and Percentage of Nonmarital Births on Age-Specific Homicide Rates, 1960-1995.” Robert M. O’Brien, Jean Stockard, and Lynne Isaacson. American Journal of Sociology, 104 (1999), pp. 1061-1095.  Read It