inclusive fitness

the reproductive success not only of an individual but also of all of that individual’s relatives in proportion to their coefficient of relatedness. In calculating estimates of reproductive success, it is assumed that parents, offspring, and siblings have an average of 50% of their genes in common; that grandparents and grand-offspring, as well as uncles or aunts and nieces or nephews, share 25% of genes; and that first cousins share 12.5% of genes.

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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.