As shown in our previous paper ('Regression I. Experimental approaches to regression', JAP, 65, 2, 345-65), the common mechanism of regression can be described as reversible dedifferentiation, which is understood as a relative increase of the proportion of low-differentiated (older) systems in actualized experience. Experimental data show that regression following disease (chronic tension headache) is followed by adaptation and an increase in system differentiation in that experience domain which contains systems responsible for that adaptation. The results of mathematical modelling support the idea that reversible dedifferentiation can be one of the mechanisms for increasing the effectiveness of adaptation through learning. Reversible dedifferentiation, which is phenomenologically described as regression, is a general mechanism for restructuring the organism-environment interactions in situations where behaviours that were effective in the past become ineffective. Reversible dedifferentiation has evolved as a component of adaptation when new behaviours are formed and large-scale modifications in the existing behaviours are required in the face of changes in the external and/or internal environment. Thus, the authors believe that this article provides evidence for Jung's view that regression is not only a 'return' to past forms of thinking, affects and behaviour, but that regressive processes provide a significant impetus for psychological growth and development.

中文翻译：

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回归 II。通过回归发展

如我们之前的论文（'Regression I. Experimental approach to regression', JAP, 65, 2, 345-65）所示，回归的常见机制可以描述为可逆去分化，理解为比例的相对增加低分化（旧）系统的实际经验。实验数据表明，疾病（慢性紧张性头痛）后的回归伴随着适应和该经验域中系统分化的增加，其中包含负责该适应的系统。数学建模的结果支持可逆去分化可以是通过学习提高适应有效性的机制之一的想法。可逆去分化，在现象学上被描述为回归，是一种在过去有效的行为变得无效的情况下重组有机体-环境相互作用的一般机制。当新行为形成并且面对外部和/或内部环境的变化需要对现有行为进行大规模修改时，可逆去分化已经演变为适应的一个组成部分。因此，作者认为这篇文章为荣格的观点提供了证据，即回归不仅是对过去的思维、情感和行为形式的“回归”，而且回归过程为心理成长和发展提供了重要的推动力。当新行为形成并且面对外部和/或内部环境的变化需要对现有行为进行大规模修改时，可逆去分化已经演变为适应的一个组成部分。因此，作者认为这篇文章为荣格的观点提供了证据，即回归不仅是对过去的思维、情感和行为形式的“回归”，而且回归过程为心理成长和发展提供了重要的推动力。当新行为形成并且面对外部和/或内部环境的变化需要对现有行为进行大规模修改时，可逆去分化已经演变为适应的一个组成部分。因此，作者认为这篇文章为荣格的观点提供了证据，即回归不仅是对过去的思维、情感和行为形式的“回归”，而且回归过程为心理成长和发展提供了重要的推动力。