Search

Accepted manuscript version, licensed CC BY-NC-ND 4.0. Published version available in Sleep Medicine, 38, 31-36. Study Objectives: Variation in day length is proposed to impact sleep, yet it is unknown whether this is above the influence of behavioural factors. Day length, sleep hygiene and parent-set bedtime were simultaneously explored, to investigate the relative importance of each on adolescents’ sleep. Methods: An online survey was distributed in 4 countries at varying latitudes/longitudes (Australia, The Netherlands, Canada, Norway). Results: Overall, 711 (242 male; age M=15.7+1.6, range=12-19yrs) adolescents contributed data. Hierarchical regression analyses showed good sleep hygiene was associated with earlier bedtime, shorter sleep latency and longer sleep (ß=-.34;-.30;.32, p Conclusions: Sleep hygiene had the most clinical relevance for improving sleep, thus should be considered when implementing adolescent sleep interventions, particularly as small negative effects of shorter day length may be minimised through sleep hygiene techniques.

This multilevel meta-analysis examined the effects of treatment for juveniles with harmful sexual behavior on psychosocial functioning, and the potential moderating effects of outcome, treatment, participant, and study characteristics. In total, 23 studies, comprising 31 independent samples and 1342 participants, yielded 362 effect sizes (Cohen's d). A moderate overall effect size was found of d = 0.60, indicating that groups receiving treatment achieved an estimated relative improvement in psychosocial functioning of 33%. Type of outcome did moderate the effect of treatment, indicating that effects on atypical sexual arousal and empathy (a trend) were smaller, compared to effects on other outcomes. Most prominently, studies of weak quality produced larger effect sizes. Unexpectedly, non-established treatments had more effect than did established treatments, which may be explained by the use of less rigorous study designs. Treatment groups with a higher percentage of juveniles with similar age victims or mixed type problem behavior also yielded larger effect sizes. Lastly, evaluation of treatment effects by professionals produced higher effect sizes, compared to other sources of information (e.g., adolescent self-report). Although only a marginal to no indication was found for publication bias by means of funnel plot analysis of the distribution of effect sizes, articles published in peer reviewed journals showed relatively large effect sizes. Implications for future research and clinical practice are discussed.

Children vary in the extent to which they benefit from parenting programs for conduct problems. How does parental mental health change if children benefit less or more? We assessed whether changes in conduct problems and maternal depressive symptoms co-occur following participation in the Incredible Years parenting program. We integrated individual participant data from 10 randomized trials (N= 1280; children aged 2–10 years) and distinguished latent classes based on families' baseline and post-test conduct problems and maternal depressive symptoms, using repeated measures latent class analysis (RMLCA) and latent transition analysis (LTA). Classes differed mainly in severity of conduct problems and depression (RMLCA; 4 classes). Conduct problems reduced in all classes. Depressive symptoms did not change in most classes, except in a class of families where conduct problems and depression were particularly severe. Incredible Years led to a greater likelihood of families with particularly severe conduct problems and depression moving to a class with mild problems (LTA; 3 classes). Our findings suggest that for the majority of families, children's conduct problems reduce, but maternal depressive symptoms do not, suggesting relative independence, with the exception of families with severe depression and severe conduct problems where changes for the better do co-occur.

Initial internet-based cognitive behavioral therapy (iCBT) programs for anxiety disorders in children and young people (CYP) have been developed and evaluated, however these have not yet been widely adopted in routine practice. The lack of guidance and formalized approaches to the development and dissemination of iCBT has arguably contributed to the difficulty in developing iCBT that is scalable and sustainable beyond academic evaluation and that can ultimately be adopted by healthcare providers. This paper presents a consensus statement and recommendations from a workshop of international experts in CYP anxiety and iCBT (#iCBTLorentz Workshop Group) on the development, evaluation, engagement and dissemination of iCBT for anxiety in CYP., Highlights • This paper gives a consensus statement and recommendations for research on iCBT for anxiety in youth • We discuss considerations regarding the development, evaluation, engagement and dissemination of iCBT for anxiety in youth • ICBT for youth anxiety should be initially evaluated with a RCT, while further iterations could use other research designs • Consistent measures relating to youth anxiety and iCBT usage should be employed, as well as precise reporting of iCBT programs • Dissemination of iCBT for youth anxiety into routine clinical practice should be considered from the start of development