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homoplasy

n. a similarity of form in bodily structures of species that are not descended from a common ancestor (e.g., the body forms of a tuna and a dolphin). This superficial resemblance often arises through the process of convergent evolution because the species live in the same environment. Compare homology. See also analogy. —homoplastic adj.

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Psychology term of the day

February 22nd 2025

delusion of influence

delusion of influence

1. the false supposition that other people or external agents are covertly exerting powers over oneself. Idea of influence is used synonymously but with the implication that the condition is less definite, of shorter duration, or less severe.

2. the false belief that one’s intentions or actions directly control external events or the thoughts and behavior of other people.