Abstract
The Opinionnaire on Political Institutions and Participation (OPIP) was designed to measure six dimensions of the overall con struct of political attitude. Three studies were conducted to deter mine the validity and reliability of the instrument. Validation and cross-validation studies indicated that the instrument was construct valid for measuring political attitudes. The reliability study revealed that the overall test-retest correlation was moderately high. Reliabil ity correlations for the six subtests ranged from moderate to moder ately low. Thus the OPIP was found to be a valid and reliable in strument for research and evaluation using multi-subject designs.
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