Statistical significance in psychological research.

@article{Lykken1968StatisticalSI,
  title={Statistical significance in psychological research.},
  author={David T. Lykken},
  journal={Psychological bulletin},
  year={1968},
  volume={70 3},
  pages={
          151-9
        }
}
  • D. Lykken
  • Published 1 September 1968
  • Psychology, Medicine
  • Psychological bulletin
Most theories in the areas of personality, clinical, and social psychology predict no more than the direction of a correlation, group difference, or treatment effect. Since the null hypothesis is never strictly true, such predictions have about a SO-SO chance of being confirmed by experiment when the theory in question is false, since the statistical significance of the result is a function of the sample size. Confirmation of a single directional prediction should usually add little to one's… Expand
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