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| Author: | Millsap, R. E. Hartog, S. B. |
| Title: | Alpha, beta, and gamma change in evaluation research |
| Journal: | Journal of Applied Psychology
1988 : VOL. 73:3, p. 574-584 |
| Index terms: | |
| Freeterms: | ORGANISATIONSTHEORIE |
| Language: | eng |
| Abstract: | Effects of organizational interventions are often studied within a nonequivalent control group design. Golembiewski, Billingsley, and Yeager (1976) classified observed change in three categories as alpha, beta, or gamma change. Alpha change corresponds to quantitative change. Beta change results from the subjective recalibration of the measurement scale. Gamma change results from the reconceptualization of the measured variable. A structural equation method is presented for the evaluation of intervention effects in the nonequivalent control group design when either alpha, beta, or gamma change may have occurred. |
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