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You are here: Home / Archives for Jack Darkes

Articles by Jack Darkes

Jack Darkes, PhD is an assistant professor, associate research scientist, the Associate Director of the Alcohol and Substance Use Research Institute and the Director of the Psychological Services Center in the Department of Psychology at the University of South Florida. He has published extensively on substance use, abuse and dependence, the validity of substance use self-reports and clinical trials, androgenic-anabolic steroid use (AAS), and individual differences and cognitive factors in the initiation and maintenance of substance use. Dr Darkes is a licensed psychologist and certified forensic evaluator. He has appeared before the United States Sentencing Commission and provided expert commentary in numerous media outlets on issues related to health, fitness, substance use, and AAS and their psychological effects. He is a military veteran, having served as a senior noncommissioned officer in the US Army. He received his PhD in clinical psychology in 1994. His research on motivations for substance use and methods for prevention are well known in the alcohol field. His current research project is tracking developmentally relevant physical, cognitive, and social changes in children from ages 8 to 17 that might predict initiation or acceleration of substance use.

The Psychological Effects of Anabolic Steroids (Part 3)

November 15, 2000 by Jack Darkes Leave a Comment

psychological effects of anabolic steroids

The Role of Expectancy in Steroid-Related Aggression Imagine if every day was like your first and you had to relearn everything everyday. Life would be impossible and you’d get little accomplished. Our behavior is made efficient and automatic via processes that carry our experiences forward, allowing us to anticipate situations, behavioral requirements and outcomes, although […]

The Psychological Effects of Anabolic Steroids (Part 2)

October 15, 2000 by Jack Darkes Leave a Comment

psychological effects of anabolic steroids

Introduction Do AAS cause psychological disturbance? By and large, empirical and experimental results differ. This month we will explore one possible reason for this discrepancy. Because aggression is the most controversial, widely researched, and highlighted psychological effect associated with AAS use, it will serve to exemplify the processes whereby pre-existing psychological factors might influence the […]

The Psychological Effects of Anabolic Steroids (Part 1)

September 15, 2000 by Jack Darkes Leave a Comment

psychological effects of anabolic steroids

A Brief Overview and Prefatory Comments This article briefly introduces and comments on issues relevant to an appreciation of the psychological effects of anabolic/androgenic steroids (AAS). Few scientific references are included, although a more detailed discussion is planned, so you don’t get off that easily. This article should not be seen as suggesting that AAS […]

Anabolic Steroids and Aggression, Part 2: Does the Evidence Support a Causal Inference?

January 3, 2000 by Jack Darkes Leave a Comment

anabolic steroids and aggression

Findings regarding the AAS use and aggression relationship are inconsistent and vary with the nature of the study and design. Although widely accepted as fact, a review finds little, if any, strong evidence for a direct causal relationship. This may, in part, stem from confusion regarding the specific questions that are answerable by various research […]

Anabolic Steroids and Aggression, Part 1 A Review of the Evidence

November 22, 1999 by Jack Darkes Leave a Comment

anabolic steroids and aggression

The association between the use of anabolic-androgenic steroids (hereinafter referred to as “anabolic steroids” or “steroids”) and aggression (“’roid rage”) has been widely accepted in the culture in general, the mainstream media, and the resistance training subculture. This view has been bolstered by the use of anabolic steroid “induced” rage as a legal defense

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