Tell the interviewing authority that you need more money because… and then state the reason why you need more money..And then pack up your briefcase and leave because you’re not going to get hired. I can’t even imagine that anybody would ever, ever, ever instruct anyone to do something like this. Never tell an interviewing or hiring authority what you need… They don’t care what you need. Now they might care what you want based on their desire to hire you, but even then it’s in the light of what they want. I can only imagine that the reasoning behind this is used to communicate to the hiring authority what is necessary for you, economically, to take the job… so! Just don’t do this. Negotiate from what is fair and reasonable to do the job… but never from what you need.
When negotiating a salary always wince at the first offer… You aren’t buying a car here… this is not a piece of real estate… you’re not buying a rug from a Persian rug dealer. 99.99% of the hiring authorities I know would literally laugh at a candidate who winces when he or she was made an offer. If the first offer is a reasonable offer, accept the offer. If it’s not, ask the hiring authority if there is any room to negotiate. Be serious and calm but for goodness sake don’t wince or make a stupid face.
In an interview, don’t tell people you are looking for a job…but simply exchanging information to see if there is mutual interest either now or in the future. Oh brother! This dumb advice comes from “career counselors” who think it’s advisable to act coy, cool and ‘superior’ to the idea “applying for a job.” I had a candidate one time that read this stupid stuff and didn’t tell me he was going to do it in the interview. He told our client that he “really wasn’t looking for a job, but…” the clients stood up and said, “then why are you here wasting my time?” End of interview! This kind of approach is supposed to set you apart from those that are desperate to find a job and be one of the few people above the fray who might choose to bless the halls of the organization you are interviewing with and work there. Stupid! While a candidate like this is acting erudite, another candidate who is really looking for a job is getting it.