The present case study describes a complexity approach to the treatment of tense and agreement deficits in a child (SC, age 3 years and 11 months, male) with a delay in morphosyntax. We investigate whether it is possible to elicit target treatment structures (auxiliary BE in questions) in a child who does not attempt them spontaneously. Furthermore, we ask whether such elicitation promotes accuracy in target form production and generalization to less complex forms as predicted by complexity accounts. Intervention consisted of a play-based drilled task eliciting the target structure. The intervention was effective in eliciting the intervention target, as SC demonstrated increased production of the target and decreased number of prompts required to elicit the target. SC made moderate gains in the spontaneous use of the proposed generalization structures. This preliminary case study demonstrates that a complexity approach may be feasible for treatment of morphosyntax and provides support for future treatment efficacy studies.

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处理紧张和协议缺陷的复杂方法：案例研究

本案例研究描述了一种复杂的方法来治疗儿童（SC，3 岁 11 个月，男性）的紧张和一致性缺陷，并伴有形态句法延迟。我们调查是否有可能在不自发尝试的儿童中引出目标治疗结构（问题中的辅助 BE）。此外，我们询问这种启发是否会像复杂性帐户所预测的那样提高目标形式产生和泛化到不太复杂的形式的准确性。干预包括引出目标结构的基于游戏的训练任务。干预在引发干预目标方面是有效的，因为 SC 证明了目标的产生增加并减少了引发目标所需的提示数量。SC 在自发使用所提议的泛化结构方面取得了适度的收益。该初步案例研究表明，复杂性方法可能适用于治疗形态句法，并为未来的治疗功效研究提供支持。