sj-rar-1-amp-10.1177_25152459231217238 – Supplemental material for Calculating Repeated-Measures Meta-Analytic Effects for Continuous Outcomes: A Tutorial on Pretest–Posttest-Controlled Designs

Supplemental material, sj-rar-1-amp-10.1177_25152459231217238 for Calculating Repeated-Measures Meta-Analytic Effects for Continuous Outcomes: A Tutorial on Pretest–Posttest-Controlled Designs by David R. Skvarc and Matthew Fuller-Tyszkiewicz in Advances in Methods and Practices in Psychological Science</p

Evidence check: the effects of online brief interventions for the prevention and treatment of methamphetamine use

This review examined the evidence for the effectiveness of online brief interventions (BIs) to reduce youth methamphetamine use. It found promising but inconclusive evidence that online BIs may be a useful tool in preventing initiation of illicit drug use among youth, including amphetamine-type drug use. The evidence for BIs in treating youth methamphetamine use is less promising. Further implementation and evaluation of online BIs is recommended

Exploring the Impact of Covid-19-Related Perceptions on Psychological Distress and Quality of Life in an International Gastrointestinal Cohort Over Time Guided by the Common Sense Model

The aim of this longitudinal study was to examine changes in COVID-19 and illness-related perceptions, gastrointestinal symptoms, coping, catastrophising, psychological distress, and QoL during the COVID-19 pandemic. A total of 831 adults with a gastrointestinal condition completed an online questionnaire at baseline (May-October 2020). Of those, 270 (32.5%) participants (85.2% female, mean age = 47.3 years) provided follow-up data (March-May 2021). Repeated-measures multiple analysis of variance and a cross-lagged panel model were used to test the study hypotheses. Gastrointestinal symptoms and COVID-19 perceptions at follow-up were strongly predicted by their baseline values, while illness perceptions were predicted by baseline gastrointestinal symptoms. Cross-lagged relationships indicated a reciprocal relationship between gastrointestinal symptoms and psychological distress. Moreover, gastrointestinal symptoms had substantial predictive utility, strongly predicting future gastrointestinal symptoms, and to a lesser extent, more negative illness perceptions, greater psychological distress, and greater use of adaptive coping strategies across time