The ability to bind, or link, different aspects of an experience in memory undergoes protracted development across childhood. Most studies of memory binding development have assessed extraobject binding between an object and some external element such as another object, whereas little work has examined the development of intraobject binding, such as between shape and color features within the same object. In this work, we investigate the development of intra- and extraobject memory binding in five-year-olds, eight-year-olds, and young adults with a memory interference paradigm. Between two experiments, we manipulate whether stimuli are presented as coherent objects (Experiment 1: n5-year-olds = 32, 19 males, 13 females; n8-year-olds = 30, 15 males, 15 females; nadults = 30, 15 males, 15 females), requiring intraobject binding between shape and color features, or as spatially separated features (Experiment 2: n5-year-olds = 24, 16 males, 8 females; n8-year-olds = 41, 19 males, 22 females; nadults = 31, 13 males, 18 females), requiring extraobject binding. To estimate the contributions of different binding structures to performance, we present a novel computational model that mathematically instantiates the memory binding, forgetting, and retrieval processes we hypothesize to underlie performance on the task. The results provide evidence of substantial developmental improvements in both intraobject and extraobject binding of shape and color features between 5 and 8 years of age, as well as stronger intraobject compared with extraobject binding of features in all age groups. These findings provide key insights into memory binding across early development. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

中文翻译：

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早期开发过程中对象内和对象外内存绑定。


将记忆体验的不同方面结合或联系起来的能力在整个童年时期经历了长期的发展。大多数记忆绑定发展的研究都评估了一个对象与某些外部元素（例如另一个对象）之间的对象外绑定，而很少有工作检查对象内绑定的发展，例如同一对象内的形状和颜色特征之间的绑定。在这项工作中，我们利用记忆干扰范式研究了五岁儿童、八岁儿童和年轻人的物体内和物体外记忆绑定的发展。在两个实验之间，我们操纵刺激是否呈现为连贯的对象（实验 1：n5 岁= 32, 19 名男性，13 名女性；n8 岁= 30, 15 名男性，15 名女性；nadults = 30, 15 名）男性，15 名女性），需要形状和颜色特征之间的对象内绑定，或作为空间分离的特征（实验 2：n5 岁儿童 = 24、16 名男性、8 名女性；n8 岁儿童 = 41、19 名男性、22 名女性；nadults = 31、13 名男性、18 名女性），需要额外对象绑定。为了估计不同绑定结构对性能的贡献，我们提出了一种新颖的计算模型，该模型以数学方式实例化我们假设的记忆绑定、遗忘和检索过程，这些过程是任务性能的基础。结果提供了证据，表明 5 至 8 岁之间，物体内和物体外的形状和颜色特征的结合都有显着的发育改善，并且与所有年龄组的物体外特征的结合相比，物体内的特征结合更强。这些发现为早期发育过程中的记忆结合提供了重要见解。 （PsycInfo 数据库记录 (c) 2022 APA，保留所有权利）。