Executive functions (EFs) and impulsivity are dimensions of self-regulation that are both related to psychopathology. However, self-report measures of impulsivity and laboratory EF tasks typically display small correlations, and existing research indicates that impulsivity and EFs may tap separate aspects of self-regulation that independently statistically predict psychopathology in adulthood. However, relationships between EFs, impulsivity, and psychopathology may be different in childhood compared to adulthood. Here, we examine whether these patterns hold in the baseline assessment of the Adolescent Brain and Cognitive (...) Development (ABCD) sample, a national sample of over 11,000 children (including 749 twin pairs) ages 9–10 years. We examine the phenotypic and genetic relationships among latent variables for different components of EFs and multiple facets of impulsivity. Additionally, we assess how EFs and impulsivity relate to composite measures and latent variables of psychopathology derived from parent report. EFs were weakly correlated with impulsivity, and the strength varied by impulsivity facet, emphasizing their separability. We did not identify significant genetic and environmental correlations between EFs and impulsivity. Moreover, controlling for their small relationships with each other, both EFs and some facets of impulsivity statistically predicted an Externalizing factor, attention problems, and social problems, and twin analyses suggested these relationships were genetic in origin. These findings indicate that EFs and impulsivity represent phenotypically and genetically separable aspects of self-regulation that are both transdiagnostic correlates of psychopathology in childhood. (shrink)

Cultural forces such as film create and reinforce rigidly-defined images of a doctor's identity for both the public and for medical students. The authoritarian and hierarchical institution of medical school also encourages students to adopt rigidly-defined professional identities. This restrictive identity helps to perpetuate the power of the patriarchy, limits uniqueness, squelches inquisitiveness, and damages one's self-confidence. This paper explores the construction of a physician's identity using cultural theorists' psychoanalytic analyses of gender and race as a framework of analysis. Cultural (...) theorists' politically-motivated work provides an excellent point of departure for destabilizing parts of the authoritarian medical hierarchy that can damage a student's professional development. Drawing on such discourse, this paper examines the processes by which a doctor's identity becomes rigidly defined and fixed by daily training. It finally proposes a way for a medical student to extrapolate himself from the current definitions of this identity and create a broader, more malleable concept of professional identity by defining himself from outside of, rather than through, difference. (shrink)

Angeregt von Freunden und Kollegen, hat Ernst Cassirer im amerikanischen Exil mit diesem Werk eine Summe seines Denkens vorgelegt, in der seine Philosophie der symbolischen Formen in ihren Hauptgedanken fortgeführt wird, und zwar in einer Weise, die auch einem breiteren Kreis interessierter Leser zugänglich ist. Cassirer stellt die alte Frage nach dem Wesen des Menschen neu und beantwortet sie, indem er die klassische Antwort mit weitreichenden Folgen abwandelt: Er bestimmt den Menschen als ein Wesen, das Symbole schafft und sich durch (...) Symbole mit seinesgleichen und der Welt verständigt. "Der Begriff der Vernunft ist höchst ungeeignet, die Formen menschlicher Kultur in ihrer Fülle und Mannigfaltigkeit zu erfassen [...]. Alle diese Formen sind symbolische Formen. Deshalb sollten wir den Menschen nicht als animal rationale, sondern als animal symbolicum definieren.". (shrink)

Both unipolar and bipolar depression have been linked with impairments in executive functioning. In particular, mood symptom severity is associated with differences in common EF, a latent measure of general EF abilities. The relationship between mood disorders and EF is particularly salient in adolescence and young adulthood when the ongoing development of EF intersects with a higher risk of mood disorder onset. However, it remains unclear if common EF impairments have associations with specific symptom dimensions of mood pathology such as (...) blunted positive affect, mood instability, or physiological arousal, or if differences in common EF more broadly relate to what is shared across various symptom domains, such as general negative affect or distress. To address this question, bifactor models can be applied to simultaneously examine the shared and unique contributions of particular mood symptom dimensions. However, no studies to our knowledge have examined bifactor models of mood symptoms in relation to measures of common EF. This study examined associations between common EF and general vs. specific symptom dimensions using structural equation modeling in adolescents and young adults with varying severity of mood symptoms. A General Depression factor capturing shared variance across symptoms statistically predicted lower Common EF. Additionally, a factor specific to physiological arousal was associated with lower Common EF. Anhedonia-specific and Mania-specific factors were not significantly related to Common EF. Altogether, these results indicate that deficits in common EF are driven by, or reflect, general features of mood pathology that are shared across symptom dimensions but are also specifically associated with physiological arousal. (shrink)

We discuss the question of linear momentum conservation when an atom coupled to a laser field enters into a state which is not an eigenstate of the linear momentum. Such a situation happens in the recently demonstrated laser cooling of atoms by velocity selective coherent population trapping. We show that this process can be understood as a filtering of the atomic state by the laser field taken as a classical measuring apparatus. In a different approach, the laser field can be (...) taken as a quantized system; then the filtering process leads to an “entangled state” of the atom and the field. (shrink)