Effects of pretraining and instructions on validity of perceptual reports by inexperienced observers.

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@article{Mefferd1968EffectsOP, title={Effects of pretraining and instructions on validity of perceptual reports by inexperienced observers.}, author={Roy B. Mefferd and Birgit Wieland and Deanna Greenstein and P K Leppman}, journal={Perceptual and motor skills}, year={1968}, volume={27 3}, pages={1003-6} }