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Of the following techniques for collecting data, which one is generally considered the least costly to implement: experiments, telephone surveys, mail questionnaires, direct observation, personal interview?
Adult Females
Describes human females who have reached adulthood, typically marked by achieving legal or biological maturity.
Sons and Daughters
Male and female offspring in a family.
Parenting Quality
A measure of the behaviors and actions of parents towards their children, which directly or indirectly influence the child’s psychological and emotional development.
Childcare
The care and supervision of a child or children, typically from infancy to adolescence, by a person other than the child's legal guardians.
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