Alexithymia (difficulties identifying and describing feelings) predicts increased risks for psychopathology, especially during the transition from childhood to adolescence. However, little is known of the early contributors to alexithymia. The language hypothesis of alexithymia suggests that language deficits play a primary role in predisposing language-impaired groups to developing alexithymia; yet longitudinal data tracking prospective relationship between language function and alexithymia are scarce. Leveraging data from the Surrey Communication and Language in Education cohort (N = 229, mean age at time point 1 = 5.32 years, SD = 0.29, 51.1% female), we investigated the prospective link between childhood language development and alexithymic traits in adolescence. Results indicated that boys with low language function at ages 4–5 years, and those who later met the diagnostic criteria for language disorders at ages 5–6 years, reported elevated alexithymic traits when they reached adolescence. Parent-reported child syntax abilities at ages 5–6 years revealed a dimensional relationship with alexithymic traits, and this was consistent with behavioral assessments on related structural language abilities. Empirically derived language groups and latent language trajectories did not predict alexithymic traits in adolescence. While findings support the language hypothesis of alexithymia, greater specificity of the alexithymia construct in developmental populations is needed to guide clinical interventions.

Due to a result by Glasner and Downarowicz [Isomorphic extensions and applications. Topol. Methods Nonlinear Anal. 48(1) (2016), 321–338], it is known that a minimal system is mean equicontinuous if and only if it is an isomorphic extension of its maximal equicontinuous factor. The majority of known examples of this type are almost automorphic, that is, the factor map to the maximal equicontinuous factor is almost one-to-one. The only cases of isomorphic extensions which are not almost automorphic are again due to Glasner and Downarowicz, who in the same article provide a construction of such systems in a rather general topological setting. Here, we use the Anosov–Katok method to provide an alternative route to such examples and to show that these may be realized as smooth skew product diffeomorphisms of the two-torus with an irrational rotation on the base. Moreover – and more importantly – a modification of the construction allows to ensure that lifts of these diffeomorphisms to finite covering spaces provide novel examples of finite-to-one topomorphic extensions of irrational rotations. These are still strictly ergodic and share the same dynamical eigenvalues as the original system, but show an additional singular continuous component of the dynamical spectrum.

The science of developmental psychopathology has made outstanding progress over the past 40 years in understanding adaptive and maladaptive developmental processes across the life span. Yet most of this work has been researcher driven with little involvement of community partners in the research process, limiting the potential public health significance of our work. To continue to advance the field we must move beyond the physical and conceptual walls of our research laboratories and into the real world. In this article, we define and describe the importance of community-engaged research, and present our overarching principles for engaging the community including practicing respect, shared power and decision-making, prioritizing the needs of the community, and engaging in consistent and transparent communication. We present several associated recommendations for best practice and highlight examples from our own research that is grounded in a developmental psychopathology perspective to illustrate these practices. Recommendations for the future of the discipline of development and psychopathology, with emphasis on training and continuing education, are described.

Sexual and gender minority (SGM) migrants’ disclosure of their identity or “coming out” has significant stakes. It can facilitate access to resources (institutional disclosure), cultivate intimacy and belonging (social disclosure), or support claims for legal protections (legal disclosure). This article analyzes SGM unaccompanied minors’ disclosures as shaped by the evolution of their legal consciousness in pursuing legal relief and incorporation in the United States. Ethnographic observations and in-depth interviews from 2014–2019 with 11 SGM unaccompanied minors reveal a striking pattern in their disclosure practices. During apprehension and detention, minors engaged in social, institutional, and legal disclosure of their SGM status. However, their interactions with agents from the Departments of Homeland Security and Health and Human Services led them to believe that SGM rights, support, and acceptance were contingent on legal status. Later, upon release from state custody, minors withheld legal disclosure from their deportation proceedings and immigration cases, even against the advisement of their attorneys. They also became more strategic in their social and institutional disclosure across other contexts. Post-legalization, however, minors broadened their disclosure practices and embarked on claims related to their SGM status. This study raises implications for research and policy. By analyzing shifts in legal consciousness over time, how certain experiences become reference points for how immigrants understand the law with respect to their identity and related behaviors are illustrated. It also extends the discussion of the far-reaching implications of SGM punishment and the disadvantages of immigration detention for children and youth.

We study the $L^p$-boundedness of the Berezin transform on the generalised Hartogs triangles which are defined by

$$ \begin{align*}H_k:=\{(z, w)\in\mathbb C^n\times\mathbb C: |z_1|^2+\cdots+|z_n|^2<|w|^{2k}<1\},\end{align*} $$

where $z=(z_1, \ldots , z_n)$ and $k\in \mathbb N$. We prove that the Berezin transform is bounded on $L^p(H_k)$ if and only if $p>nk+1$.

This editorial discusses a study by Day and colleagues, in which the authors investigated the prevalence of resolution of alcohol and other drug problems in the UK and compared people who resolved their problems with and without treatment.

Previous studies show that maternal mind-mindedness positively impacts children’s social development. In the current studies, we examine the relation between mind-mindedness during parent–child interaction, oxytocin (OT), and postnatal depression in a sample of mothers (N = 62, ages 23–44) and their infant (ages 3–9 months). In Study 1, infant salivary OT was positively correlated with mothers’ appropriate mind-related comments, and negatively correlated (at trend level) with maternal depression scores. Mothers experiencing symptoms of depression used fewer appropriate mind-related comments than controls. Study 2 was a double-blind, placebo-controlled, experimental study, in which the same women who participated in Study 1 were administered nasal OT. This did not significantly influence levels of mind-mindedness. Study 2 warrants a larger trial to investigate the effect of OT on mind-mindedness further. Study 1 is the first to demonstrate an association between maternal mind-mindedness and variation in children’s OT levels. Since both OT and mind-mindedness have been repeatedly implicated in processes of maternal–infant attachment, this association highlights the centrality of mothers’ caregiving representations in facilitating the parent–child relationship and children’s early development.