Dr vickman conducted factorial design to examine the effects of music and room temperature on participants memory. participants were randomly assigned to study a list of nonsense words either listening or not listening to music in either a warm or cold room

A 2 x 2 factorial design. This research design is used in large-scale clinical trials, in each participant has a random assignment to receive treatment and an additional random assignment that is also chosen randomly. In this example the participants will be subjected to 2 different variables; be in a cold or warm room with or without music.

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