Darwinian fitness

the relative success of a particular organism or genotype in producing viable offspring, which is determined by natural selection. [Charles Darwin]

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Psychology term of the day

January 19th 2025

imageless thought

thinking that occurs without the aid of images or sensory content. The Würzburg school upheld the existence of imageless thought on the basis of introspective reports, such as experimental participants’ stated ability to name a piece of fruit without picturing it. Edward Bradford Titchener and others in the structural school opposed this view (see structuralism). See Bewusstseinslage.