<p>How much of an impact can two very good research recommendations from professors have on the process? they specifically praise my analytical abilities for scientific research, and describe the high-level work that I have done. I am applying for engineering schools like MIT and Caltech.</p>
<p>That would help definitely. Have you published with them?</p>
<p>If you have a paper of publishable quality and the professor can truly attest to your abilities, include it. I got a recommendation from my research mentor.</p>