Yes, ineffective negotiation tactics. I'm trying to tell you that "using the same negotiation strategies as men" means nothing. There is no "negotiation strategy for men". The negotiation "strategy" is made on the spot depending on the circumstances, and is irrespective of gender. How well it works depends on how well you thought it out, and how well you can apply it, and how others respond to it. These are all interlinked — you need to reach the end of the negotiation to figure out if your plan was correct and in what amount, with the mention that if you pay attention you can alter it on the way if you find the opportunity. This is harder than it sounds in my experience at least.

The premise is invalid.

And as for your appeal to authority, shit, it looks like food for the echo chamber to me. Stats created to propagate a meme, peer reviewed or not.