activity that occur with some regularity in an organism.Infradian rhythms occur less than once a day (e.g. human menstrual cycle), circadian rhythms repeat themselves every 24 hours (e.g. sleep/waking cycle), andultradian rhythms more than once a day (e.g. stages of sleep during one night).
theserefer to the tendency for (a) ‘actors’ to explain their own behaviour in situationalterms and (b) observers to explain the behaviour of others in dispositional (person) terms.