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A other who is slow in responding to her infant's cries of distress is most likely to encourage
Experiment
A research method involving the manipulation of one variable to determine its effect on another variable, under controlled conditions.
Headache
A pain or discomfort in the head, scalp, or neck, often associated with tension, migraine, or other health issues.
Independent Variable
The variable that is manipulated by the researcher to observe its effect on the dependent variable.
Loudness
A subjective perception of the intensity of sound, often measured in decibels, that impacts how sound is experienced.
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