Publications by authors named "Ben Lewis"

Objective: This study investigates the development of mental rotation skills in male and female youth from a longitudinal study at ages 9/10 (baseline), 11/12 (Year 2), and 13/14 (Year 4) using a relatively novel task, the Little Man Task.

Method: The Little Man Task consists of four humanoid figures holding an object in either hand and rotated on two axes at 0° or 180°. Participants were prompted to indicate which of the figure's hands (left or right) was holding the object.

View Article and Find Full Text PDF

Objective: Chronic heavy alcohol use increases risk for developing alcohol use disorder (AUD), leading to adverse health outcomes. Evidence suggests patient demographics are used to make treatment decisions, which contributes to barriers to AUD treatment experienced by Hispanic/Latino (H/L) individuals. This study characterized the use of ethnicity in alcohol use assessment and treatment referral among medical (MT) and dental trainees (DT).

View Article and Find Full Text PDF

Longitudinal studies of the effects of adversity on human brain development are complicated by the association of stressful events with confounding variables. To counter this bias, we apply a propensity-weighted analysis of the first two years of The Adolescent Brain Cognitive Development (ABCD) Study® data, employing a machine learning analysis weighted by individuals' propensity to experience adversity. Data included 338 resting-state functional connections from 7190 youth (46% female), divided into a training group (80%) and an independent testing group (20%).

View Article and Find Full Text PDF
Article Synopsis
  • Early alcohol initiation is linked to negative outcomes, and this study aims to identify and compare the importance of risk factors such as inhibition control, reward sensitivity, and contextual influences on early alcohol use.
  • The analysis uses data from the ABCD Study involving nearly 12,000 youth, comparing those who began drinking before age 16 with similar peers who did not.
  • Results indicate that contextual factors, like externalizing behaviors and prior substance knowledge, are the strongest predictors of early alcohol initiation, with inhibition control and reward sensitivity showing less relevance.
View Article and Find Full Text PDF

Longitudinal studies of the effects of adversity on human brain development are complicated by the association of stressful events with confounding variables. To counter this bias, we apply a propensity-weighted analysis of the first two years of The Adolescent Brain Cognitive Development (ABCD) Study data, employing a machine learning analysis weighted by individuals' propensity to experience adversity. Data included 338 resting-state functional connections from 7190 youth (46% female), divided into a training group (80%) and an independent testing group (20%).

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates how childhood familiarity with substances can predict future substance use in adolescence, aiming to develop better prevention strategies.
  • Utilizing latent class analysis on a large sample, four distinct groups (Naïve, Common, Uncommon, Rare) were identified based on their knowledge of substances, with the Uncommon and Rare groups showing significantly higher risks of substance use.
  • The findings suggest that this familiarity could serve as a valuable screening tool for clinicians to identify adolescents who are at risk for substance use, emphasizing the importance of addressing substance knowledge in early childhood.
View Article and Find Full Text PDF

Blood phosphatidylethanol (PEth), a metabolite of ethanol, is emerging as a direct biomarker of choice for characterizing ethanol consumption in clinical, research, and forensic contexts. An accumulating body of evidence, and a recent international consensus conference, supports a cutoff of 20 μg/L of PEth (16:0/18:1) to distinguish abstinence from beverage ethanol consumption. There is a dearth of research, however, on whether exposures to nonbeverage ethanol sources are sufficient to produce PEth concentrations that exceed this cutoff.

View Article and Find Full Text PDF

Introduction: A growing literature indicates bidirectional associations between pain and tobacco use. Cigarette smokers are at increased risk for chronic pain, and observational and experimental studies indicate that pain increases motivation to smoke. Tobacco use disorder frequently co-occurs with other substance use disorders, which are also associated with chronic pain vulnerability.

View Article and Find Full Text PDF

Objective: This project aimed to characterize the relationship between physical pain experienced at time of entry to residential treatment for substance use disorders (SUDs) and the frequency of treatment dropout. We hypothesized that both endorsement of recent pain and higher magnitude of endorsed pain intensity would be associated with higher dropout rates. We further hypothesized that these effects would be exacerbated among patients with opioid use disorder (OUD).

View Article and Find Full Text PDF

This study examined the urine and hair opiate profiles associated with the daily consumption of presumptive codeine-predominant poppy seed food products. Ten participants consumed one of five food products at breakfast for 10 consecutive days. Baseline urine and hair samples were collected on Day 1.

View Article and Find Full Text PDF

Background: Childhood familiarity with (knowledge of) substances is a potentially important, currently understudied adolescent substance use risk factor. We aimed to describe changes in childhood familiarity with substances and to test whether baseline familiarity predicts early adolescent substance use.

Methods: Utilizing the Substance Use Module of the longitudinal cohort study, Adolescent Brain Cognitive Development (ABCD; US youth aged 9-10 years followed for 10 years) through Data Release 4 (n=7896; individuals who completed all six assessments in the first three years), we conducted longitudinal mixed models and survival analyses to describe changes in familiarity and to determine the adjusted odds of substance use by age 13 based on number of familiar substances at baseline.

View Article and Find Full Text PDF

: Chronic pain is both an important antecedent and consequence of substance use. Although evidence suggests healthcare professionals may be uniquely vulnerable to chronic pain, this vulnerability remains largely unexamined in the context of recovery from substance use disorders (SUDs). We characterized pain in a sample of treatment-seeking individuals, examined potential differences in pain trajectories between healthcare professionals and non-healthcare patients, and interrogated potential pain-related vulnerabilities in treatment outcomes between these groups.

View Article and Find Full Text PDF

In this narrative review, we draw from historical and contemporary literature to explore the impact of alcohol consumption on brain and behavior among women. We examine three domains: 1) the impact of alcohol use disorder (AUD) on neurobiobehavioral outcomes, 2) its impact on social cognition/emotion processing, and 3) alcohol's acute effects in older women. There is compelling evidence of alcohol-related compromise in neuropsychological function, neural activation, and brain structure.

View Article and Find Full Text PDF

Introduction: Pain is commonly reported among those in treatment for substance use disorders (SUD) and is associated with poorer SUD treatment outcomes. The current study examined the trajectory of pain over the course of SUD treatment and associations with substance use outcomes.

Methods: This observational study included adults seeking treatment for alcohol, cannabis, or opioid use disorders (N = 811).

View Article and Find Full Text PDF

Although their individual significance is well-documented, the interaction effects of age, sex, and alcohol use disorder (AUD) have undergone little systematic investigation. Here, we extend prior work interrogating sex and group (AUD vs. community comparison [CC]) by probing the main and interaction effects of age on emotion processes as well as two conventional neuropsychological tests.

View Article and Find Full Text PDF

Background: Cognitive training interventions appear capable of improving alcohol-associated neurobehavioral deficits in recently detoxified individuals. However, efficacy remains incompletely characterized in alcohol use disorder (AUD) and available data address only non-affective cognitive outcomes; enhancement of social cognition remains uninvestigated. We utilized a training paradigm in which successfully ignoring emotionally-valent stimuli benefitted task performance.

View Article and Find Full Text PDF
Article Synopsis
  • Alcohol use disorders are common worldwide, and monitoring alcohol abstinence is important in various clinical settings.
  • The direct biomarker phosphatidylethanol (PEth) is being used more frequently to track alcohol abstinence, but its formation from incidental alcohol sources, like hand sanitizer, is not well studied.
  • A study involving 15 participants using high-alcohol content hand sanitizer multiple times a day found that blood PEth levels did not exceed a significant threshold, contributing new insights into how incidental alcohol exposure can affect PEth levels.
View Article and Find Full Text PDF
Article Synopsis
  • * A study utilizing satellite data identified that most fires in Kakadu National Park tend to stop at linear features such as roads, rivers, and cliffs, which only cover 13% of the area but effectively create smaller fire containment regions.
  • * The stopping ability of these linear features varies based on their width and changes throughout the fire season, suggesting that understanding these characteristics can enhance planning for fuel reduction burns, even in areas with less detailed fire mapping.
View Article and Find Full Text PDF

Objective: Difficulties identifying emotional facial expressions are commonly observed in alcohol use disorder (AUD). Critically, this work utilizes single-race stimulus sets, although study samples are not similarly constrained. This is particularly concerning given evidence among community samples showing the impact of racial incongruity, giving rise to interpretative caveats.

View Article and Find Full Text PDF

Savannas are the most fire-prone of Earth's biomes and currently account for most global burned area and associated carbon emissions. In Australia, over recent decades substantial development of savanna burning emissions accounting methods has been undertaken to incentivise more conservative savanna fire management and reduce the extent and severity of late dry season wildfires. Since inception of Australia's formal regulated savanna burning market in 2012, today 25% of the 1.

View Article and Find Full Text PDF

Alcohol use disorder (AUD) commonly is associated with compromise in neurobiological and/or neurobehavioral processes. The severity of this compromise varies across individuals and outcomes, as does the degree to which recovery of function is achieved. This narrative review first summarizes neurobehavioral, neurophysiological, structural, and neurochemical aberrations/deficits that are frequently observed in people with AUD after detoxification.

View Article and Find Full Text PDF

Background: Individuals with alcohol use disorder (AUD) often display compromise in emotional processing and non-affective neurocognitive functions. However, relatively little empirical work explores their intersection. In this study, we examined working memory performance when attending to and ignoring facial stimuli among adults with and without AUD.

View Article and Find Full Text PDF

Direct biomarkers of ethanol are used to monitor individuals who are required to abstain from ethanol consumption. In recent years, blood phosphatidylethanol (PEth) has gained acceptance in clinical and forensic contexts as an abstinence marker. Its elimination half-life of several days provides a window of detection of days to weeks.

View Article and Find Full Text PDF

Introduction: Impaired driving has resulted in numerous accidents, fatalities, and costly damage. One particularly concerning type of impairment is driver drowsiness. Despite advancements, modern vehicle safety systems remain ineffective at keeping drowsy drivers alert and aware of their state, even temporarily.

View Article and Find Full Text PDF

The COVID-19 outbreak is a global pandemic declared by the World Health Organization, with rapidly increasing cases in most countries. A wide range of research is urgently needed for understanding the COVID-19 pandemic, such as transmissibility, geographic spreading, risk factors for infections, and economic impacts. Reliable data archive and sharing are essential to jump-start innovative research to combat COVID-19.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_session2aunicr5nl970uiint4p6slmgbnooulg): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once