FRACTIONAL FACTORIAL DESIGN By N., Sam M.S. - 3 an experimental design where some higher order interactions are intentionally confounded with lower order interactions to reduce the total number of cells in the design. See confounds. FRACTIONAL FACTORIAL DESIGN: "Fractional factorial design is a design for experiments." Related Psychology Terms SOCIAL CLASS (Social Stratification) RETICULAR FORMATION (Reticular Activating System, RAS) HEARING (AUDITION) REACTION TIME (Response Latency) AER HUNGER LASHLEY, KARL SPENCER (1890- 1958) DREAM-STATE (D-STATE, REM- STATE) DELAYED REACTION JUST NOTICEABLE DIFFERENCE (JND; Differential or Difference Threshold) HELMHOLTZ, HERMANN LUDWIG FERDINAND VON (1821-94) Cite this page: N., Sam M.S., "FRACTIONAL FACTORIAL DESIGN," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/fractional-factorial-design/ (accessed August 11, 2022).