Find over 25,000 psychological definitions

t test

any of a class of statistical tests based on the fact that the test statistic follows the t distribution when the null hypothesis is true. Most t tests deal with hypotheses about the mean of a population or about differences between means of different populations, where those populations show normal distributions and the variances are unknown and need to be estimated. The test can be used with independent groups (e.g., test scores of those who were given training vs. a control group without training) or dependent groups (e.g., test scores before vs. after training). Also called Student’s t test.

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

May 21st 2024



n. in the analytic psychology of Carl Jung, the public face an individual presents to the outside world, in contrast to more deeply rooted and authentic personality characteristics. This sense has now passed into popular usage. The term is taken from the mask worn by actors in Roman antiquity.