Cross-domain associations between mathematical and narrative abilities in preschool-aged children.

Both mathematical and narrative abilities are considered critical dimensions of children's kindergarten readiness skills and are emphasized in developmental standards and readiness assessments during the prekindergarten period. Yet, despite considerable opportunities available to educators to leverage potential cross-domain associations in their instruction, little is known about how component math skills are associated with narrative skills. The current study extends prior theoretical and empirical work on cross-domain associations by examining the extent to which component math skills, constituting a kindergarten readiness assessment battery, are associated with narrative comprehension skills in children aged 4-6 years. Two geographically distinct samples of children enrolled in a summer kindergarten readiness program in the United States (N = 108) were used to explore how early numeracy skills (e.g., counting, cardinality), math language, and patterning skills individually and together contributed to variance in narrative comprehension skills. Zero-order correlations indicated that math and narrative skills were significantly and moderately correlated, with cardinality and math language skills showing the strongest associations, followed by patterning and counting skills. Furthermore, results from a multiple regression analysis indicated that cardinality and math language each explained a significant and substantial proportion of variance in narrative comprehension skills when controlling for the other math skills. Implications for theoretical models of cross-domain development of children's cognitive skills are discussed.

Frequency and characteristics of acne-related post-inflammatory hyperpigmentation.

In patients with darker skin types (Fitzpatrick phototypes III-VI), acne is often accompanied by post-inflammatory hyperpigmentation (PIH). Further, acne-related pigmentation can pose a greater concern for the patient than the acne lesions. There has been little formal study of this acne-related PIH. Recently, the Asian Acne Board - an international group of dermatologists with interest in acne research - made a preliminary evaluation of the frequency and characteristics of PIH in seven Asian countries. A total of 324 sequential acne subjects were evaluated for the presence of PIH. The majority (80.2%) of subjects had mild to moderate acne and there were more females than males (63.0% vs 37.0%). In this population of patients consulting a dermatologist for acne, 58.2% (188/324) had PIH. The results also showed that pigmentation problems are often long lasting: at least 1 year for more than half of subjects and 5 years or longer in 22.3%. In accordance with our clinical experience, patients reported that PIH is quite bothersome, often as bothersome or more so than the acne itself and sometimes more problematic. Excoriation was commonly reported by patients, and may represent a modifiable risk factor that could potentially be improved by patient education.