"disposition about" is a grammatically correct phrase and can be used in written English.
It refers to a person's attitude or inclination towards something. You can use it to describe someone's opinion or feelings towards a particular topic or situation. Example: "She had a positive disposition about the new project and was eager to get started."
"They have the same fun-loving disposition about them.
Even in victory, Scottland had a "very bad disposition" about his career, Davis said.
You have to rectify the situation like a puzzle". Sinclair displays a very practical but reverential disposition about the procedure.
(d) The White House aide, known for his calm disposition, about whom Karl Rove said, "I'd use the word 'sweet' if it didn't make me look odd".
"You can't have a final disposition about Guantánamo until the Supreme Court has ruled on the Hamdan case," said Tony Snow, the White House spokesman, referring to a pending decision on whether detainees at Guantánamo may be tried as war criminals before military commissions and whether they may challenge their detentions in federal courts.
As the expert developing an NRDR knowledge base invents new concepts, s/he makes implicit assumptions about any concepts that s/he introduces, in that s/he has a certain disposition about what these concepts mean and when they do actually apply.
Assured he is a candidate of character, talent and originalist disposition, how about longevity?
as result of such actions, arriving at dispositions about migration or termination of systems and applications in connection with the Infrastructure.
Meanwhile, teachers underwent intensive training and development to address their dispositions about the abilities of black and impoverished children while providing the schools and teachers with the resources and capacity to deliver a high level of instruction for all children.
The lack of engagement may be, in reality, one of the consequences of the underlying dispositions about ownership and control of health research.
But dispositions are dispositions to bring about certain manifestations.
