The phrase "a common rationale" is correct and usable in written English.
It can be used when discussing a widely accepted reason or explanation for a particular belief or action.
Example: "Many people believe that exercise is essential for good health, as it is a common rationale for maintaining a healthy lifestyle."
Alternatives: "a shared reason" or "a typical justification".
A common rationale for low security at research reactors is that the amount of fuel is often too small to make a bomb.
I don't say "majority opinion" because I don't think there are five justices who will necessarily agree on a common rationale for their agreed-upon result.
To say that professors in the many disciplines known as the humanities are humanists is to compound vagueness with vagueness, for these disciplines have long since ceased to have or even aspire to a common rationale.
We present a common expected standard for clinical trial design in male and female sexual dysfunction, a common rationale for the design of phase I to IV clinical trials, and common considerations for selection of study population and study duration in male and female sexual dysfunction.
A new report undermines a common rationale for paying chief executives huge sums.
A common rationale for the One-Child Policy is that fewer people make larger economic growth possible.
A common underlying rationale for the choice of a joint organisational form, as opposed to a traditional contracting-out agreement concerns the complexity of the services delivered.
'It's not fair' is the common rationale of those wanting concurrent kick-offs.
One common rationale for capital punishment is that it will deter others from committing awful crimes.
The common rationale for the Fed model relates to the "discounted cashflow" approach to valuing equities.
"The guy's done a great job," said Herbert Allen, an investment banker in New York who is chairman of the compensation committee on Coke's board, echoing the most common rationale for last year's pay levels.
