Which law did David Hartlet restate regarding the association of ideas?

David Hartlet restated the Law of Contiguity, which is essential in the study of associations in psychology. This law posits that thoughts or ideas are linked when they occur close together in time or space. Essentially, it suggests that if two events happen simultaneously or in close succession, the mental association formed between them strengthens.

Hartlet emphasized the importance of this principle in understanding how associations are formed and maintained in memory processes. The Law of Contiguity explains why we may recall one idea upon the thought of another, especially when the two experiences are interconnected in our past.

In contrast, the other concepts such as the Law of Frequency focus on how often events occur together as a determining factor for their association, the Law of Vividness pertains to the degree to which an experience captures our attention and emotion, and the Law of Compound Association describes the formation of associations from multiple experiences. Each of these laws has its distinct implications in psychological theory, but the Law of Contiguity specifically encapsulates the mechanism Hartlet sought to clarify regarding the temporal and spatial relationships between ideas.