Changes in posttraumatic stress disorder symptom severity during the COVID-19 pandemic: Ten-wave findings from a longitudinal observational cohort study of community adults.

Few studies have examined changes in posttraumatic-stress disorder (PTSD) symptomatology across an extended time period during the COVID-19 pandemic. This study used a longitudinal cohort design to examine: (1) changes in overall PTSD symptoms and symptom clusters; (2) moderators of change; (3) the clinical significance of observed changes; and (4) correlates of clinically meaningful changes. Community adults (N = 1412) were assessed using the PTSD Checklist for DSM-5 (PCL-5) at 10 timepoints (October 2018 - April 2022).

Periodicity and severity of changes in depression and anxiety during the COVID-19 pandemic: Ten-wave longitudinal findings from an observational cohort study of community adults.

Aims: Few multi-wave longitudinal studies have examined mental health changes across the coronavirus 2019 (COVID-19) pandemic. The current study examined: (a) overall changes in depression and anxiety over 10-waves of data collection; (b) subgroup moderators of changes; (c) clinical severity of the changes via minimally important differences (MIDs); and (d) correlates of clinically important changes.

Methods: Using a longitudinal observational cohort design, 1412 non-clinical adults (Mage=36; 60% female) were assessed for depression and anxiety via the PHQ-9 and GAD-7 from October 2018 to April 2022 (3 pre-pandemic, 7 intra-pandemic waves; M retention = 92%).

The Impact of Recreational Cannabis Legalization on Cannabis Use and Associated Outcomes: A Systematic Review.

Background: Recreational cannabis legalization has become more prevalent over the past decade, increasing the need to understand its impact on downstream health-related outcomes. Although prior reviews have broadly summarized research on cannabis liberalization policies (including decriminalization and medical legalization), directed efforts are needed to synthesize the more recent research that focuses on recreational cannabis legalization specifically. Thus, the current review summarizes existing studies using longitudinal designs to evaluate impacts of recreational cannabis legalization on cannabis use and related outcomes.

Getting High or Getting By? An Examination of Cannabis Motives, Cannabis Misuse, and Concurrent Psychopathology in a Sample of General Community Adults.

Objective: Few studies have examined cannabis motives in adults and, although associations between cannabis use and psychiatric conditions are well documented, there has been limited investigation of the intersection of cannabis use, cannabis motives, and psychopathology. In a sample of community adults, the present study examined cannabis motives in relation to cannabis misuse, and investigated whether motives linked cannabis misuse with concurrent psychiatric symptoms.

Method: Participants (N = 395;  = 34.

Impact of COVID-19 on alcohol use disorder recovery: A qualitative study.

In March 2020, restrictions on in-person gatherings were introduced due to the coronavirus disease (COVID-19) pandemic, requiring alcohol use disorder (AUD) recovery resources to migrate to virtual platforms. This study investigated how these restrictions impacted recovery attempts and explored participant experiences with virtual resources using a qualitative approach. Participants attempting recovery from AUD ( = 62; = 48.

Fears of receiving compassion from others predict safety behaviour use in social anxiety disorder over and above fears of negative self-portrayal.

Why do people with social anxiety disorder (SAD) engage in the use of safety behaviours? While past research has established that fears of negative self-portrayal are strongly associated with safety behaviour use in SAD, no research to date has investigated the potential role of fears of receiving compassion. Both types of fears could motivate those with SAD to engage in safety behaviours in order to keep others at a distance. In the present study, 150 participants with a clinical diagnosis of SAD completed measures of fears of negative self-portrayal, fears of receiving compassion, and safety behaviour use.

Measuring Gamblers' Behaviour to Show That Negative Sounds Can Reveal the True Nature of Losses Disguised as Wins in Multiline Slot Machines.

Losses disguised as wins (LDWs) are slot machine outcomes where players gain fewer credits than they wager. Despite being losses, slot machines celebrate LDWs with positive sounds and animations, leading gamblers to respond to them as wins. It is unknown how manipulating the sound following LDWs may influence gamblers' behaviour.