Examlex
Physiological observation techniques,such as pupilometers,psychogalvanometers,and voice-pitch analysis,precisely measure levels of arousal.
Alternative Hypothesis
A statement that contradicts the null hypothesis and is tested to determine if there is evidence to support it.
Mean Difference
Mean difference, also known as the average difference, refers to the arithmetic mean of differences between paired observations in two sample sets.
Same Individuals
Referring to using the same group of subjects or samples in different conditions or periods of a study or experiment.
Matched Pairs
A study design in which subjects are paired based on certain characteristics, with one subject from each pair receiving each treatment.
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