Independent Variables (IV): Study Environment, Sleep Duration, Type of Excercise, Type of instruction, Method of studying, Snack type, Homework schedule, Dependent Variables (DV): Test Scores, Number of words correctly recalled, Mood rating, Concentration level, Class participation, Quality of sleep, Problem solving ability, Extraneous Variables (EV): Time of Day, Noise level, Temperature, Lighting conditions, Previous experience, Experimenter bias, Participant fatigue, Recent meals, Mood, Instruction clarity,

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