Examlex
Changes in the voice with age include all of the following except
Naturalistic Observation
A research method in which subjects are observed in their natural environment without any manipulation by the researcher.
Headphones
A pair of small loudspeaker drivers worn on or around the head over the ears to listen to audio signals privately.
Descriptive
Descriptive refers to the act of detailing or illustrating the characteristics of persons, objects, or events through words or statistics.
Correlational Research Methods
Research techniques that investigate the relationship between two or more variables, without inferring a causal relationship.
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