Categorizing indicators like family income, family size, values orientation, peer interactions and alcohol dependency (which are indicators of social, cultural and economic dimensions) may have measurements using "scale" and cab be interpreted as "very high", "high", "average", "low", and "very low".
The aim of a good measurement is to avoid error component as much as possible, and this can be achieved by establishing validity and reliability measures. Validity is the measure of accuracy; to measure what really is to be measured. The content, criterion, or construct validity are the types of validity. Validity can be established by the use of standardized or quality assured instruments of data. Finally, reliability measures the extent to which a measure is error free (Dipboye, Smith, & Howell, 1994). Pilot testing of instruments and reliability testing of data collected are some ways to ensure reliability.