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haploid

adj. describing a nucleus, cell, or organism that possesses only one representative of each chromosome, as in a sperm or egg cell. In most organisms, including humans, fusion of the haploid sex cells following fertilization restores the normal diploid condition of body cells, in which the chromosomes occur in pairs. Hence for humans, the haploid number is 23 chromosomes, which is half the full complement of 46 chromosomes.

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Psychology term of the day

February 22nd 2025

incentive motivation

incentive motivation

1. in Hull’s mathematico-deductive theory of learning, an inducement, such as the expectation of a reward or punishment, that serves as an intervening variable or mediator to influence response strength. See also stimulus-intensity dynamism.

2. more generally, any motivation induced by a positive reinforcer.