I wouldn't be too hasty about using Genie's case study to generalize about language acquisition. Genie was also horribly abused and neglected, without adequate

I wouldn't be too hasty about using Genie's case study to generalize about language acquisition. Genie was also horribly abused and neglected, without adequate access to sunlight or nutrition, for the formative years of her life. In other words, lack of access to language was not the only variable in her case. Of course, a controlled study of this would be unethical, so case studies are all we have, and we can't be picky about them. But neither should we make assumptions about what variables are actually being measured in a case study. That requires a controlled experiment.