randomized design

any of various experimental designs in which individual participants are assigned to different conditions (groups) using a purely chance process, such as rolling a die. A crucial assumption underlying randomized designs is that any systematic differences between treatment groups will be due to the experimental conditions themselves and not to any other unmeasured factors. Also called randomized group design. Compare nonrandomized design.

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Psychology term of the day

November 24th 2024

Cattell’s personality trait theory

an approach to personality description based on the identification of traits through factor analysis and their classification into surface traits and the 16 source traits that underlie them. [Raymond B. Cattell]