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Abstract: Research in impression formation and persuasion has considered use of tag questions as part of a powerless speech style. However, little research has examined how contextual factors, such as characteristics of the communicator, moderates whether tag questions act “powerless”. The present study manipulated source credibility, tag question use, and argument quality. When the source was low in credibility, tag question use decreased persuasion and biased message processing relative to a control message. However, when the source was credible, tag questions increased message processing in a relatively objective manner. Therefore, it appears that tag questions can have different effects on information processing, depending on who uses the tag questions. [Copyright &y& Elsevier]

We examined the development of some features of morphosyntactic ability, specifically the acquisition of auxiliaries and use of agreement marking, along with sentence processing capacity. We used a conceptually simple task called the Tags Question Task, which is a method for evaluating a number of language processes in the production of a commonly used, familiar linguistic device. We compared the performance of children with early focal lesions (N=21), children with specific-language impairment (N=24), and typically developing children (N=24) matched in age and nonverbal ability; additional analyses involved comparisons of children matched on performance level. The data converge to support a “delayed” development of language behavior in our clinical groups, as overall patterns of performance and age-related changes on individual tag features and tag questions were strikingly similar in all three groups across a number of methods of comparison. Implications for theories of the development of brain–language relationships as they pertain to early focal brain damage, specific-language impairment, and the language acquisition process in typically developing children are discussed. [Copyright &y& Elsevier]