A useful theory should also be able to organize those research data that are not incompatible with each other. Without some organization or classification, research findings would remain isolated and meaningless. Unless data are organized into some intelligible framework, scientists are left with no clear direction to follow in the pursuit of further knowledge. They cannot ask intelligent questions without a theoretical framework that organizes their information. Without intelligent questions, further research is severely curtailed.
A useful theory of personality must be capable of integrating what is currently known about human behavior and personality development. It must be able to shape as many bits of information as possible into a meaningful arrangement. If a personality theory does not offer a reasonable explanation of at least some kinds of behavior, it ceases to be useful.
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