Stressful households, more so in households where the parents are fighting or going through a divorce. Adolescents may also be stressed for reasons unrelated to the household. (Normal teenage phases)<span />
Chem: Microscope
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Answer:
reliable, valid
Explanation:
Reliability and validity are concepts in measurement. Reliability has to do with the degree to which an instrument can produce consistent results when it is used repeatedly over time. Validity, on the other hand, indicates the extent to which the instrument measures its intended measurement. The scale can be reliable but not value as it still produces results, though inaccurate.
