On the underdetermination of theory by evidence
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[1] R. L. Shotland,et al. Social Science and Social Policy , 1985 .
[2] L. Cronbach,et al. Designing evaluations of educational and social programs , 1983 .
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[1] R. L. Shotland,et al. Social Science and Social Policy , 1985 .
[2] L. Cronbach,et al. Designing evaluations of educational and social programs , 1983 .