Equine-Assisted Therapy for Posttraumatic Stress Disorder Among First Responders.

Equine-assisted therapy has emerged as an adjunctive integrative health modality in treating individuals experiencing physiological and psychological distress. However, limited research exists to assess the efficacy of such treatments as a possible adjunct to psychological treatment for Posttraumatic Stress Disorder (PTSD) in first responders. The current pilot study examines the additive benefits of equine-assisted exposure for first responders suffering occupational incapacitation from operational-related trauma. Seven first responders participated in an 8-week, 90-minute, equine-assisted therapy program. Primary outcome measures (i.e., anxiety, depression, trauma, inflexibility and avoidance) were administered pre- and post-intervention. Additional measures examined feelings about the self and views towards aspects of the program. Findings suggested initial support for symptom reduction, particularly for depressive and trauma-related symptoms. Qualitative feedback from participants suggested significant benefits including increased sense of peace, reduced anxiety, mindfulness, and increased trust in the self and others. To our knowledge, this is the first study to directly examine clinical outcomes of first responders with PTSD participating in equine-assisted therapy and presents a promising adjunct to care in first responders moving forward.

Correction to: Predicting Dropout from Children's Mental Health Services: Using a Need-Based Defnition of Dropout.

The original version of this article was unfortunately published with an error in Table 2. The confidence intervals listed in Table 2 were published incorrectly. The correct version of confidence intervals in Table 2 should read as below.

Predicting Dropout from Children's Mental Health Services: Using a Need-Based Definition of Dropout.

Dropout from children's mental health services has negative impacts on children, families and service providers. To target interventions aimed to reduce dropout, it is essential to predict individuals who drop out. This study compares predictors of dropout using a novel need-based definition, to existing definitions of dropout. Children (N = 650; 61% male) aged 5-13 attended five children's mental health agencies in Ontario. A mixed effects logistic regression was used to model binary outcome variables (i.e., dropout or treatment completion), for each definition of dropout. Using the need-based definition, older child age, lower child problem presentation, higher child risk behaviors, higher caregiver needs, and more child strengths predicted an increased likelihood of dropout. The need-based definition results in different predictors of dropout than existing definitions in the literature. High caregiver needs was the only predictor of dropout across all definitions. Caregiver needs represent a prospective target when distributing interventions aimed to reduce dropout.

Modulation of social behavior and dominance status by chronic pain in mice.

The potential influence of pain on social behavior in laboratory animals has rarely been evaluated. Using a new assay of social behavior, the tube co-occupancy test (TCOT), we assess propinquity-the tendency to maintain close physical proximity-in mice exposed to pain using subcutaneous zymosan or spared nerve injury as noxious stimuli. Our previous experience with the TCOT showed that outbred mouse sibling dyads show higher levels of tube co-occupancy than stranger dyads. We find here that long-lasting pain from spared nerve injury given to both mice in the dyad abolishes this effect of familiarity, such that strangers also display high levels of propinquity. We performed a separate experiment to assess the effect on dominance behavior of nerve injury to one or both mice of a dyad in which relative dominance status had been previously established via the confrontation tube test. We find that neuropathic pain given only to the dominant mouse reverses the relationship in male but not female mice, such that the previously subordinate mouse becomes dominant. These observations bolster the scant but growing evidence that pain can robustly affect social behavior in animals.

Social propinquity in rodents as measured by tube cooccupancy differs between inbred and outbred genotypes.

Existing assays of social interaction are suboptimal, and none measures propinquity, the tendency of rodents to maintain close physical proximity. These assays are ubiquitously performed using inbred mouse strains and mutations placed on inbred genetic backgrounds. We developed the automatable tube cooccupancy test (TCOT) based on propinquity, the tendency of freely mobile rodents to maintain close physical proximity, and assessed TCOT behavior on a variety of genotypes and social and environmental conditions. In outbred mice and rats, familiarity determined willingness to cooccupy the tube, with siblings and/or cagemates of both sexes exhibiting higher cooccupancy behavior than strangers. Subsequent testing using multiple genotypes revealed that inbred strain siblings do not cooccupy at higher rates than strangers, in marked contrast to both outbred and rederived wild mice. Mutant mouse strains with "autistic-like" phenotypes (Fmr1-/y and Eif4e Ser209Ala) displayed significantly decreased cooccupancy.