Distinctions between separation anxiety and social anxiety in children and adolescents

Separation anxiety and social phobia are intertwined to a considerable degree, and high comorbidity rates have been reported. The present study used latent class analysis (LCA) to investigate if classes of children and adolescents with-simultaneously-high rates of separation anxiety and low rates of social anxiety symptoms, or vice versa, could be identified. Eight- to 18-year-olds from a large general population (n=1000) and referred sample (n=735) were assessed with the Multidimensional Anxiety Scale for Children (MASC). With LCA, a separate class of referred 8-11-year-old children with high separation anxiety scores, and simultaneously lower social anxiety scores was identified, next to a class of children with high scores on separation anxiety and social anxiety. In the other groups (referred 12-18-year-olds and children and adolescents from the general population), a class with individuals who specifically scored high on separation anxiety could not be revealed. The results indicated that separation anxiety represents a different construct than social anxiety in referred children (but not in referred adolescents or in the general population). It can be concluded that, in referred children, research regarding etiology and treatment outcome of anxiety symptoms should be aimed specifically at separation anxiety and social anxiety, instead of just investigating a broader anxiety dimension.     

If dancers ate their shoes: Inductive reasoning with factual and counterfactual premises

This experiment addressed the effect of precue information, which may be either familiar or novel, and either relevant or irrelevant, on the solution of inductive reasoning problems. Sixty undergraduate students each completed 216 verbal inductive reasoning problems and five psychometric ability tests. The reasoning problems were equally divided among analogies, classifications, and series completions, with half of each kind of item presented in a standard, uncued format, and half presented with a precue. With respect to internal validation, it was found that for analogies and classifications, subjects take longer to process irrelevant than relevant information if the precue is familiar, but they take longer to process relevant than irrelevant information if the precue is novel. For series completions, this relation does not hold; rather, both novelty and irrelevance add time to the processing of information, with the time for irrelevance greater than that for novelty. The utility of precues for different tasks was explored, and it was found that familiar relevant precues facilitated solution of the more difficult kinds of items (classifications and series completions), but hampered solution of the easier, more automatically solved items (analogies). With respect to external validation, it was found that the nonentrenched induction tasks overlapped with psychometric tests in terms of abilities measured, that the abilities measured were fluid rather than crystallized, and that the precued (more nonentrenched) items were better measures of fluid abilities than were the uncued items.