When it comes to cognitive architecture and human information processing, chunks are one of the best known and most recognized constructs. Nevertheless, the nature of chunks is still very elusive, especially when it comes to chunks in procedural knowledge. This study deals with basic features of procedural information processing and examines the manifestation of chunks in procedural knowledge. The participants' task was to reconstruct sequences of chess moves. Chess was chosen as an experimental domain, because of its complexity, well-defined rules and standardized measure of chess player strength. From the results we conclude that short-term memory capacity is determined by the combination of the size and amount of procedural chunks recalled to the short-term memory. We have shown that on average, participants with more specialized knowledge operated faster and with larger chunks of procedural information than participants with less specialized knowledge. We have shown that in procedural information processing, the level of expertise and the sorting order of the retrieved information are important factors that influence the amount of procedural chunks retained in the short-term memory. Therefore, the capacity of short-term memory in complex situations cannot be expressed as a simple concept.

当谈到认知架构和人类信息处理时，块是最著名和最受认可的结构之一。尽管如此，块的性质仍然非常难以捉摸，尤其是在涉及程序知识中的块时。本研究涉及程序信息处理的基本特征，并检验程序知识中块的表现形式。参与者的任务是重建国际象棋走法的序列。国际象棋被选为实验领域，因为它的复杂性、定义明确的规则和国际象棋选手实力的标准化衡量标准。从结果我们得出结论，短期记忆容量是由回忆到短期记忆的程序块的大小和数量的组合决定的。我们已经证明，平均而言，与专业知识较少的参与者相比，具有更多专业知识的参与者操作速度更快，程序信息块更大。我们已经表明，在程序信息处理中，专业水平和检索信息的排序顺序是影响短期记忆中保留的程序块数量的重要因素。因此，复杂情况下的短时记忆能力不能用简单的概念来表达。