Student or Learner
The small-scale study wasn't enough to validate the results of his bold hypothesis.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
Kathleena, please give your threads more meaningful titles, such as Small-scale study, Strength-to-weight ratio and Semicolon, colons, or dash.