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<p>A <b>process theory</b> is a system of ideas which explains how an <a href="page.php?w=entity">entity</a> changes and develops. <a href="page.php?w=Process">Process</a> theories are often contrasted with <b>variance theories</b>, that is, systems of ideas that explain the <a href="page.php?w=variance">variance</a> in a <a href="page.php?w=dependent_variable">dependent variable</a> based on one or more <a href="page.php?w=independent_variable">independent variable</a>s. While process theories focus on how something happens, variance theories focus</p><p>
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