Final answer:
While Havelock Ellis's specific study findings are not directly described, the references suggest a general consensus that grit and perseverance are crucial predictors of academic success, potentially aligning with Ellis's research.
Step-by-step explanation:
Havelock Ellis's study is not directly mentioned in the provided references; however, there is a clear theme about the predictive quality of grit and perseverance over talent or IQ when it comes to achieving academic success. This conclusion mirrors the findings of research studies on characteristics that contribute to student achievement. Therefore, although the specific outcomes of Ellis's study aren't detailed here, we can infer that Ellis's work may align with the broader body of research that highlights persistent effort and dedication (grit) as critical factors for success in educational contexts.