programmed cell death

the orderly death and disposal of surplus tissue cells, which occurs as part of tissue remodeling during development, or of worn-out and infected cells, which occurs throughout life. Also called apoptosis.

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Psychology term of the day

December 23rd 2024

verbal thought

a reasoning process that requires language and thus represents the merging of language and thought. Children first use language to guide thought by speaking out loud; only later does speech go underground to become covert verbal thought. See egocentric speech; inner language. [proposed by Lev Vygotsky]