Night eating syndrome subtypes: differences in binge eating and food addiction symptoms.

PURPOSE: The purpose of the current study was to examine differences in binge eating and food addiction symptoms between Night Eating Syndrome (NES) latent subtypes: evening hyperphagia with nocturnal ingestions (EHNI), evening hyperphagia-only (EHO), and nocturnal ingestions-only (NIO). It was hypothesized that the EHNI group would report more binge eating behaviors and more food addiction symptoms than both the EHO and NIO groups. Further, it was hypothesized that the EHO and NIO groups would differ with the EHO group reporting more binge eating behaviors and the NIO group reporting more food addiction symptoms. METHODS: Participants completed measures online relating to night eating, binge eating, and food addiction. Average age of the final sample was 34.3 (SD = 10.5) and 62.0% were men. Responses to the Night Eating Questionnaire (NEQ; Allison et al., 2008) were used to create an EHNI group (n = 65), an EHO group (n = 32), and a NIO group (n = 69). ANOVAs were conducted to examine between-group differences on disordered eating symptoms. RESULTS: Participants in the EHNI group reported more severe binge eating and food addiction symptoms than those in the EHO and NIO groups. However, there were no significant differences in binge eating or food addiction between the EHO and NIO groups. CONCLUSION: Individuals who meet both NES core criteria (evening hyperphagia and nocturnal ingestions) are likely at a higher risk for experiencing other, more severe disordered eating pathologies. Implications concerning assessment and future research on NES typology are discussed. LEVEL OF EVIDENCE: Level V, cross-sectional descriptive study.

Impulse Control Difficulties and Hostility Toward Women as Predictors of Relationship Violence Perpetration in an Undergraduate Male Sample.

Relationship violence in college students continues to be an important social problem. Prior research has identified several risk factors for relationship violence including trauma exposure, impulse control difficulties, and hostility toward women; however, previous research assessing these variables has mainly focused on bivariate relationships, with little work attempting to connect multiple correlates to relationship violence while utilizing a theoretical, interactive approach. The purpose of this study was to simultaneously examine several correlates of relationship violence (i.e., hostility toward women, trauma exposure, and impulse control difficulties), and to examine male perpetration of relationship violence among a sample of male college students using a cross-sectional design. It was hypothesized that among men in this sample, hostility toward women and trauma exposure would moderate the relationship between impulse control difficulties and relationship violence. The findings suggested that college-aged men, who have high impulse control difficulties, high hostility toward women, and who have multiple trauma exposures, may be more likely to perpetrate relationship violence against a female intimate partner than those who are low in impulse control difficulties, report low levels of hostility toward women, or report fewer or no trauma exposures. Thus, the current study suggests that exposure to trauma predisposes men with specific attributes to relationship violence, which may provide a treatment target for future intervention programs.

Morningness-eveningness and social anxiety symptoms: the influence of depression symptoms on the indirect effect through punishment sensitivity and experiential avoidance.

Social anxiety has recently been linked to morningness-eveningness; however, the psychological mechanisms underlying this relationship are not well known. As such, the purpose of the current study is to propose a model by which morningness-eveningness is related to social anxiety symptoms through punishment sensitivity and experiential avoidance within an adult American, community sample recruited via Amazon's Mechanical Turk (MTurk). It was hypothesized that experiential avoidance and punishment sensitivity would be associated with increased social anxiety symptoms and that morningness-eveningness would be negatively related to social anxiety symptoms. Furthermore, eveningness was hypothesized to be associated with increased punishment sensitivity and in turn, greater experiential avoidance. Lastly, the relationship between morningness-eveningness and social anxiety was hypothesized to be mediated by punishment sensitivity among the group with high depression levels, but not among the group with lesser depression symptoms. The results indicated that eveningness was related to social anxiety symptoms through experiential avoidance, and that depression symptoms influenced the relationship between morningness-eveningness and punishment sensitivity such that, in those high in depression symptoms, there was a significant association between eveningness and punishment sensitivity, but not among those with lower depression levels. The study findings build upon existing chronobiological research and addresses inconsistencies in previous literature.