why was landis facial expression experiment unethical

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1. Carney Landis Facial Expression Experiment by Ken Murakami on Prezi

   

2. Landis facial expression experiment

   

3. Landis facial expression experiment

   

4. Landis facial expression experiment

   

5. LANDIS FACIAL EXPRESSION EXPERIMENT by Julianna Rees on Prezi

   

6. Landis facial expression experiment