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Naturalistic studies show that children can create language-like communication systems in the absence of conventional language. However, experimental evidence is mixed. We address this discrepancy using an experimental paradigm that simulates naturalistic sign creation. Specifically, we tested if a sample of 6- to 12-year-old children (52 girls and 56 boys drawn from an urban, predominantly white population in Western Australia) can comprehend and create novel gestural and vocal signs. Experiment 1 tested children's ability to comprehend novel signs. Experiment 2 tested children's ability to create novel signs. Results show that children can comprehend and create gestural and vocal signs, that communication is more successful in the gesture modality, and that older children outperform younger children.

The distinction between grandiose and vulnerable narcissism is new to the child literature, but initial findings suggest that it may have important implications for understanding adjustment. This study examined how expressions of narcissism in children influence their reactions to a mild egothreats experience. Children (N = 124; aged 8-12 years) completed self-ratings before and after doing a brief but challenging task. Negative emotions, self-conscious emotions, and performance estimates were measured. Regression analyses showed that, even after controlling the effects of self-esteem and temperament, vulnerable narcissism was related to increased hostility, anger, and shame, whereas grandiose narcissism was related to inflated performance estimates following the task. These results demonstrate the unique roles of grandiose and vulnerable narcissism in children. [ABSTRACT FROM AUTHOR]