Find over 25,000 psychological definitions


n. the exchange of genetic material between paired chromosomes during the formation of sperm and egg cells. It involves the breaking and rejoining of chromatids of homologous chromosomes in a process called crossing over. It results in offspring having combinations of genes that are different from those of either parent.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

June 16th 2024

conversational maxims

conversational maxims

the four basic rules governing interpersonal communications. The rules state that such communications should be (a) truthful; (b) as informative as is required; (c) relevant to the matter under discussion; and (d) clear, orderly, and brief. Violations of these maxims are usually presumed to be deliberate or indicative of a cognitive disturbance. [introduced by British-born U.S. philosopher H. Paul Grice (1913–1988)]