Course of Antisocial Behavior during Emerging Adulthood: Developmental Differences in Personality

Despite similar normative changes in antisocial behavior (AB) and traits of disinhibition and negative emotionality during "emerging adulthood," few studies have tested if there are developmental differences in personality over this period for distinct courses of AB. In a college cohort assessed at ages 18 and 25, we examined if mean-level changes on traits from the Tridimensional Personality Questionnaire varied by course of AB. Compared to persisters, those who desisted in AB from 18 to 25 exhibited a larger decrease on novelty seeking and larger increase on reward dependence. A significant mean-level decline was observed for harm avoidance, but was unrelated to AB course. Findings support theories of the co-development of personality and AB during emerging adulthood.     

Religious Doubt and Spiritual Growth Among Adults Bereaved of a Grandparent

Religious beliefs and bereavement provide contexts for personal growth (Benore & Park, 2004). The death of a grandparent may be especially well-suited to prompt such growth. Using data from 164 adults, ages 18 to 51 years, bereaved of a grandparent, the authors examined whether religious doubt relates to current grief via perceived spiritual growth. Mediation analyses showed that fewer religious doubts were associated with spiritual growth in bereavement, but spiritual growth was associated with higher levels of current grief. Results are discussed within a framework for including family processes in bereavement research that includes religious doubt and spiritual growth.     

Motor excitability during movement preparation in Tourette syndrome

Tourette syndrome (TS) is a neurodevelopmental disorder characterized by the occurrence of motor and vocal tics. TS has been linked to the impaired operation of cortical‐striatal‐thalamic‐cortical circuits that give rise to hyper‐excitability of cortical motor areas, which may be exacerbated by dysfunctional intra‐cortical inhibitory mechanisms. That said, many individuals gain control over their tics during adolescence and it has been suggested that this increased control arises as a result of the development of mechanisms that operate to suppress corticospinal excitability (CSE) ahead of volitional movements. Here we used single‐pulse transcranial magnetic stimulation (TMS) in conjunction with a manual Go/NoGo task to investigate alterations in CSE ahead of volitional movements in a group of adolescents with TS (N = 10). Our study demonstrated that CSE, as measured by TMS‐induced motor‐evoked potentials (MEPs), was significantly reduced in the TS group in the period immediately preceding a finger movement. More specifically, we show that individuals with TS, unlike their age‐matched controls, do not exhibit the predicted increase in mean MEP amplitude and decrease in MEP variability that immediately precede the execution of volitional movements in typically developing young adults. Finally, we report that the magnitude of the rise in MEP amplitude across the movement preparation period in TS is significantly negatively correlated with clinical measures of motor tic severity, suggesting that individuals with severe motor tics are least able to modulate motor cortical excitability.     

Meta‐Analysis of Anorexia Nervosa Counseling Outcome Studies From 1990 to 2015

This meta‐analysis of 92 anorexia nervosa counseling articles examined the effectiveness of counseling in reducing symptoms of anorexia nervosa at termination and the longest follow‐up assessments. Treatment‐as‐usual studies showed no effect to small effects at both posttest and follow‐up assessments, wait‐list studies showed small effects at posttest and medium effects at follow‐up, and single‐group uncontrolled studies showed medium to large effects at posttest and medium effects at follow‐up. Implications for research and practice are discussed.