You are right somehow, but if you read my words carefully, you will notice that "ask him directly and frankly as a reference and for a recommendation letter" is merely for "intent purpose" but not for a "real reference".
The truth is, regardless whether or not you want the old boss to be a reference, he/she will highly likely be called or e-mailed by the interviewer, as some other friends mentioned.
My previous boss was called when I was looking for a job. When I was hiring a person, I called his/her boss too -- the previous direct supervisor.
Another tip for z2010 -- you don't need to list your boss in your CV. If the interviewers asks if they can contact your boss for a reference, say "please do so only when I am the top candidate". If situation permits, communicate a bit to the chief interviewer about you, your boss, and the lab (be careful about what you say!). Most importantly, your ability/talent/knowledge/experience/personality will determine if you will be hired. This is acquired from the face-to-face interview. A boss' reference serves as a second opion.
The truth is, regardless whether or not you want the old boss to be a reference, he/she will highly likely be called or e-mailed by the interviewer, as some other friends mentioned.
My previous boss was called when I was looking for a job. When I was hiring a person, I called his/her boss too -- the previous direct supervisor.
Another tip for z2010 -- you don't need to list your boss in your CV. If the interviewers asks if they can contact your boss for a reference, say "please do so only when I am the top candidate". If situation permits, communicate a bit to the chief interviewer about you, your boss, and the lab (be careful about what you say!). Most importantly, your ability/talent/knowledge/experience/personality will determine if you will be hired. This is acquired from the face-to-face interview. A boss' reference serves as a second opion.