John P. Hoffmann
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View article: Childhood trauma and adolescent substance use: an integrative perspective
Childhood trauma and adolescent substance use: an integrative perspective Open
This article addresses the complex relationship between childhood trauma and adolescent substance use. Drawing on evidence from neurodevelopmental, psychological/emotional, behavioral, and social research, we determined that childhood trau…
Rural–Urban/Suburban Differences in the Effects of Adverse Childhood Experiences on Delinquency<sup>☆</sup> Open
Adverse childhood experiences (ACEs) are recognized as significant precursors to delinquency. However, to date, no studies have explicitly examined the interconnectedness of ACEs, residency in rural or urban/suburban areas, and delinquent …
View article: Comparative toxicological studies of Heracleum maximum W. Bartram and Psoralea corylifolia L. seed extracts on brine shrimp (Artemia salina) and wistar rats
Comparative toxicological studies of Heracleum maximum W. Bartram and Psoralea corylifolia L. seed extracts on brine shrimp (Artemia salina) and wistar rats Open
This study sought to elucidate the reason for the traditional use of Psoralea corylifolia (PC) over Heracleum maximum (HM) for treating vitiligo, though seeds from both plants are rich in a class of phototoxic compounds called furanocoumar…
Is social capital durable?: How family social bonds influence college enrollment and completion Open
A large literature demonstrates that social capital has positive effects on outcomes for children, but we know little about whether social capital is durable, i.e., whether its effects persist long after its creation. We use two nationally…
View article: The Legacy of Blood Atonement? Gauging Mormon Support for the Death Penalty
The Legacy of Blood Atonement? Gauging Mormon Support for the Death Penalty Open
American support for the death penalty has declined over time, but conservative religious groups have exhibited more favorable attitudes toward this practice than their mainline religious and secular peers. Scholars have generally overlook…
Family Structure, Unstructured Socializing, and Heavy Substance Use among Adolescents Open
Background: Psychoactive substance use is a transient behavior among many adolescents and diminishes as they mature, but some engage in heavy forms of substance use, which increases their risk of health and behavioral challenges. A consist…
Family Social Capital and Delinquent Behavior in the United Kingdom Open
Research suggests that juvenile delinquency has a number of deleterious effects on adolescents’ lives. A promising way to discourage delinquent behavior is by increasing social capital, which involves social connections adolescents have to…
Marijuana Use and Depressive Symptoms among Young People: Examining Unidirectional and Bidirectional Effects Open
Research suggests that the prevalence of marijuana use and depression are increasing in the United States. Although it is not entirely clear what accounts for these coincident trends, several studies have shown that these two health concer…
The Puʻu ʻŌʻō eruption of Kīlauea Volcano, Hawai‘i—Episode 21 through early episode 48, June 1984–April 1987 Open
First posted December 17, 2018 For additional information, contact: Contact,Hawaiian Volcano ObservatoryU.S. Geological SurveyP.O. Box 51Hawaiʻi Volcanoes National Park, HI 96718-0051 The Pu'u 'Ō'ō eruption from the middle East Rift Zone o…